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Acousta P1OO mixing system Acousta PORTABLE MIXING SYSTEM P100 GENERAL More than a decade of experience in the ELN, development, manufacture and distribution of equipment for the professional sound equipment connected with knowledge of the specific needs of the practice enables us to offer you the portable console system Acousta P1OO. By using a CAD system, it was possible for us in the development of P1OO an optimum of clarity of the controls. All technical drawings and views could be optimized with the help of a CAD system that has achieved the highest possible testimony about the details. The individual amplifier stages used in the operational amplifiers are the latest state of development and represent an optimum in terms of noise and power consumption for battery powered applications specifically dar. at all critical control points of the pathway are exclusively FET switches are used. This design assures an environmentally independent switching. The input transformer is used MU metal shielding and guarantee absolute studio quality. The built-in output transformers are toroidal types and are among the highest quality, which at this point can be used. Per input module is an input jack for a microphone and an input jack for line available. These jacks are run either XLR or Lemo F33-O3. For the insert point is a jack 6m3 m. When the sum of 1/2 depending on two output jacks, one for 6 dB and 15 dB for any level. All connection and transfer data comply with the ORF gazette Nr.2.6. from 85-12-16                          

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Acousta P100 console system DESCRIPTION The Acousta P100 Portable Mixing System consists of six basic elements: 1. Main body (main frame) P101 2. Adapter / charger P102 3. Operating system P103 4. Input Module P104 5. Sum P105 module P105 6. Sum auxiliary module P106 BASIC HOUSING (mainframe) P101 The basic housing can be made in three sizes: for 6 input modules for 8 Input Modules for 10 input modules In addition a mounting frame for 19 "rack technology is possible. CHARGER / POWER SUPPLY P102 Is built to the standards of the OVE and contains a dispersion toroidal power transformer.                                              

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Acousta O0 P1 console system OPERATING SYSTEM P103 This module provides a solid unit and includes: Monitor unit Pre listen device Measuring oscillator On / off switch with power control Low battery indicator Talkback Speaker unit working with complimentary amplifier (AUX, monitor, tape, links, etc. ..) On the back wall of the module is located next to the AUX IN, AUX OUT (15pol. min D connectors) TB Center, monitor and Tape L / R and the external power input in the form of a two-pole Lemo connector. The console can be operated with a DC voltage of 12 V to a maximum of 30 V. COMMAND SYSTEM The unit has a built-command microphone and an XLR input jack for an external microphone command. The microphone level is adjustable and can be switched to S 1, 2 or 3. Provided as a fourth possibility 1st STUDIO TB. Upon activation of this switch the amplified microphone signal reaches a on the rear wall of the module located jack.

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Acousta P100 console system MONITOR OUTPUT The two-channel monitor output can be muted using CUT switch. The output impedance is 20 ohms. The level is set by the monitor controllers. When the STEREO function is enabled, control B is inactive, control A now serves both channels synchronously. The MONITOR jack is used to listen to the monitor via headphones. If the switch is actuated LSP, the monitor can also be heard over the speakers built. The output power for the built-in speakers is approximately 500m W. Two button strips (L / R) allow the selection of the desired signal monitoring. It can be selected: TAPE L R IN 9 10 IN 7 8 IN 5 6 IN 3 4 IN 1 2 AUX L R S3 S3 S1 S2 PFL With the MONO switch the left is linked with the right row mono. TEST OSCILLATOR Connected to the OFF switch de-activatable oscillator can be switched to three frequencies. (63 Hz, 1K Hz, 10K Hz ± 5%) It can be internally connected to all input channels, total channels and AUX IN. For flat rail regulator set to -10, the output level is 0dBu.

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Acousta P100 console system BATTERY TEST A 3-point LED display gives information about the respective battery state. In a display of 100% a function of time is guaranteed by at least 10 hours. A display of 75% indicates a guaranteed delivery time of 7.5 hours, these two pilot lamps light up only when queried, ie. by pressing the BATT TEST key to energy consumption is not pointless. If a discharge of the battery reaches, just under an hour, the functioning of the device will light, even without pressing the BATT TEST key on the BATT indicator. All this information refers to DURACELL Alkaline MN 1300-B2 MONO LR20 1.5V batteries. INPUT MODULE P104 The connectors for the input module are mechanically connected to the module fixed. The input module has a rotary selector switch that makes the selection of sources (MIC, LINE, and TG). It activates the corresponding inputs, and determines the gain and also ensures the switch from red light to Fader Start operation. The corresponding level FINE control allows optimum adjustment to the connected source. (See block diagram) The peak level is monitored at three points of the input modules 3 dB before clipping point. The built-in high pass filter can be bypassed by a switch. The -3 dB point is at 100 Hz. Slope is 12 dB / octave. The phase switch allows the incoming signal to rotate its phase by 180 degrees. (Toggle switch with gold contacts) The triple equalizer can be bypassed by a switch (toggle switch with gold contacts) Its three middle frequencies are at 80 Hz ± 12 dB, 2K2 Hz ± 12 dB, 12K Hz ±12 dB.

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Acousta P100 console system The built-in slider is a 104mm slide path fader type of conductive plastic and micro start switch manufactured by Penny & Giles. The channel mute circuit is designed such that, during the activation the audio signal causes no additional noise modulation. The pan control allows the channel signal to the two principal sums Half assigned. The PFL switch routes the signal from the slider to the Pre-listen rail (Not affected by the mute button). The AUX send path is activated by the slider. By re-soldering a jumper on the board, however, the path can also be switched PRE. TECHNlCAL DATA MICROPHONE INPUT transformer, 48 V phantom power to DIN 45596 Input level: switchable -55, -40, -25, -10 plus fine adjustment +10 dB switchable gain setting affects the negative feedback input amplifier Input impedance: 1K ohm Source resistance: 0 .. 200 ohms Common mode suppression: > 60 dB at 10K Hz LINE INPUT transformer Input Level: Switchable 0, +6, +15 plus fine adjustment +10 dB switchable gain setting affects the negative feedback input amplifier                                

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 Acousta P100 console system Input impedance: 10K ohms Source resistance: 0 .. 600 ohms Common mode rejection ratio:> 60 dB bel 10K Hz INPUT SELECTOR MIC / LINE FET switch circuit for switching the inputs and a rough pre-selection of input gain / attenuation. Crosstalk: Since only DC voltages are switched and the actual switching elements (FET's) are arranged directly at the input amplifiers may occur no crosstalk at the input selector switch. FINE LEVEL CONTROLLER The level fine adjustment acts in the negative feedback of the second stage and has a control range of 0 .. 15 dB (can be changed on request). PHASE REVERSE SWITCH A toggle switch with gold contacts caused by the insertion point to switch the incoming signal by 180 degrees. IMPACT SOUND (RUMBLE) FILTERS A toggle switch with gold contacts enables the activation of the rumble filter before the insert point. The -3 dB point of the filter is 100 Hz filter unit amounts to add 12 dB / octave.                                        

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Acousta P100 console system EQUALIZER Using the toggle switch with gold contacts, a 3-band filter group is looped into the signal path. Typically possible: Low frequency ...... + / - 12 dB at 80 Hz Center frequency ...... + / - 12 dB at 2K2 Hz High Frequency ...... + / - 12 dB at 12K Hz PAN CONTROL The distribution of sound signals to 1 and 2 Attenuation at 10K Hz> 75 dB PRE FADE LISTEN (PFL) A toggle switch with gold contacts switches the signal from the fader to the PFL buss (no influence of the mute circuit). It enables listening through headphones or through your own PFL output with appropriate amplifiers / speaker combination. INPUT OVERLOAD INDICATOR (peak lndicator) Display is in the form of a light emitting diode. Starting point at -3 dB of the maximum possible level. It is measured on three points of the input module (lnsert output, before equalizer, before fader). The release time of peak detector is 2 s MUTE SWITCH A toggle switch with gold contacts enabled a FET switching circuit. Therefore, switching without causing audible noise is possible.                

 

 

 

 

 

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Acousta P100 console system FLAT RAIL REGULATOR Make - Penny & Giles The slide path of the fader is 104mm. The attenuation at closed fader is at least 90 dB at 1K Hz. A mechanical coupling of two or more controllers is possible. Corresponding synchronization accuracy is guaranteed. INSERT POINT The insert has an output level of 0 dB. It is located on the low-cut filter and before the equalizer and the fader. (see block diagram). AUX SEND DEVICE A toggle switch with gold contacts picks up the signal after the channel fader and leads to a controller. The selected signal reaches the third sum Buss. CONNECTION OF MODULES The input and output units are supplied with a gold plated plug system. The Buss system consists of: Buss sum 1 Buss sum 2 Buss sum 3 PFL buss Buss monitor L/R 1,2,3 and PFL are as LINK IN and LINK OUT to interconnect several consoles with two 15-pin miniature D connectors.                                      

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Acousta P100 console system SUM MODULE P105 The sums of 1 and 2 have an insert point which amounts to 0 dB and output level is before the master fader. SUM CONTROL For the total control of the sums 1, 2 and 3 are faders same type as fitted in the input module. The measuring points for the peak program meters are located on the faders. LIMITER ln the sums 1 and 2 are integrated limiter. Limiter range: 20 dB Regulating starting point: 0 dBu + / - 0.25 dBu Response time: 500 µ s Reset time: can be adjusted continuously Positioning unit: 2 dB for 20 dB overload The response of the limiter is indicated by an LED. In Stereo program material via the LINK switch, the two limiters are connected to prevent a displacement for control purposes of the stereo center. MODULATION TOOL Total per module is a 12 point LED level meter for Integrated DIN 45406. The measuring inputs can be switched between total and monitor. In addition, there are two buttons that increase the sensitivity of the indicator at 9 or 20 dB. The measurement band adjusts the level using (tone at -20 dB) or Off to control audio levels for U-Matic.                                    

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Acousta P100 console system OUTPUTS The sums of 1 and 2 have the next two outputs lnserts. Both are floating, transformer balanced +6 and the other a +5 dBu nominal. The Output impedance is <60 Ω. The headroom is +14 dB based on an output level of +6 dBu. AUXILIARY TOTAL MODULE P106 The total auxiliary module P106 or Σ3 ΣI and 2 have an insert point, the output level is 0 dB and is before the master fader. TOTAL CONTROL The total control of the E 3 is a flat rail regulator of the same type as in Input channel. The point of measurement of the peak program meter is located on the flat rail regulators. MODULATION TOOL In sum auxiliary module is a 12 point LED level meter Integrated by DIN 45406. The measured input can help between total and PFL are switched. In addition, there are two buttons that Increase the sensitivity of the display at 9 or 20 dB. Which serves to a means of measuring tape level setting (tone at -20 dB) or Off to control audio levels for U-Matic. AUX L / R CHANNEL The AUX IN L / R channel is intended as an additional line input The internal level is 0 dBu nominal. The input impedance amounts to 10kΩ. OUTPUT The sum of 3 has a fully floating balanced transformer next to the lnsert output with a nominal level of +6dBu. The output impedance is <6OΩ. The headroom is +14 dB relative to an output level of +6 dBu.                              

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Acousta P100 console system POWER SUPPLY The wireless operation possible 16 in series-connected batteries or batteries of 1.5V LR20 MONO dimension size D. The external power supply P102 enables lever using one equivalent battery power operation, as well as the simultaneous charging of the batteries. For network operation, a separation between the clay and ground protection network is possible. The external power supply P102 is also used as a power supply module be if no battery, or battery operation is possible or desirable. EXECUTION OF INPUT AND OUTPUT JACKS All connectors come as LEMO types and performed in accordance with ASA. An optional version with XLR is possible. Headphone Jacks ................................. 1/4 "stereo jack. Insert point ............................................ 1/4 "stereo jack. DIMENSIONS Basic housing P101 / 6: Width .......... 400m m Depth .......... 502m m Height ..........165m m Basic housing P101 / 8 Width .......... 460m m Depth .......... 502m m Height ..........165m m Basic housing P101/10 Width .......... 523m m Depth .......... 502m m Height ..........165m m Other details see mechanics. ACOUSTA MIXERS ARE DESIGNED AND MADE IN AUSTRIA              

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Acousta P100 console system Technical specifications of the mixer system P100 Tensions in dBu always refer to 0.775 V 0 dBu = 0.775 V All channel and master faders are set to position 0. Line outputs are terminated with 600Ω. External sources have a source impedance of 50Ω in line inputs, 150 Ω at MIC. All figures are in the range of 30 Hz .......16K Hz unless otherwise stated. Specified levels are measured with continuous sine. LEVEL Microphone Sensitivity: -70 .... -10 dB Line ln sensitivity: -15 .... +15 dB Level at the insert points: 0 dBu Output level: +6 dBu, +15 dBu Monitor level: 0 dBu IMPEDANCES Microphone input impedance: 1K Ω Input impedance Line in: 10K Ω Source impedance of the lnserts: 200 Ω Source impedance of the Line outputs (+6 dB): 50 Ω FREQUENCY RESPONSE Filter off: -0.5 ... +0.5 dB 3 dB filter off at key points 30 Hz ...16k Hz mono sound dropping out Rumble filter 100 Hz + / - 12 dB / octave Treble Control 10K Hz + / - 12 dB Bass Control 50 Hz + / - 12 dB Presence filter 2K2 Hz + / - 12 dB                          

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Acousta P100 console system HEADROOM About headroom before the channel controller (K tot <= 1%) 20 dB About headroom before the master fader (K tot <= 1%) 20 dB Maximum level of the line outputs, Rload 600 Ω 20 dBu FOREIGN VOLTAGES The external voltages are rms values with an equivalent Noise bandwidth of 20 Hz ... 20K Hz (Audio Precision System 1 or equivalent instrument). Equivalent input noise of the microphone input, Source impedance 200 Ω -126 dB Noise ratio at the sum output, Total control closed: 96 dB Total control open: 84 dB all control inputs open switch position +6 78 dB THD +6 dBu input and output, 31,5 Hz ... 16 kHz According to pertainant level diagram level, 60 Hz ... 10 kHz 0.2% CROSSTALK Channel to channel 80 dB Pan attenuation 55 dB Fader attenuation (40 Hz...10K Hz) 90 dB (40 Hz...16K Hz) 85 dB POWER SUPPLY Mains voltages 20% 220V External power supply 12 V ... 30 V Power consumption P100 6 channel ............................................... approx 350 mA at 30 V 8 channel ................................................approx 400 mA at 30 V 10 channel ................................................approx 450 mA at 30 V Internal operating voltages: Amplifier 15 V Internal operating voltages: Phantom power for Mic 48 V MECHANICAL DATA see mechanics

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P100 Contents --------------------------------------- General Description ---------------------------------------- 1. Mechanics ---------------------------------------- 2. The power supply P1006 2.1. General 2.1.1. External Supply 2.1.2. Internal Battery 2.1.3. Internal Mono Cell 2.1.4. Internal Power supply plug-P102 2.2 Block Diagram 2.3. Description of the function blocks 2.3.1.1. The Charge Controller LM317 2.3.1.2. Bypass 2.3.1.3. Stabilization circuit 2.3.2. Outputs 2.3.3. The Cover Contact 2.4. The DC / DC converter 2.5. Parts list 2.6. Connector Assignment 2.7. Schematics ------------------------------------------ 3. Development Board 3.1. Connector Assignment 3.2. Parts List

15 4. The Operating System P103 4.1. The module F103A 4.1.1. Block Diagram 4.1.2. Description of the function blocks

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4.1.2.1. Tape L / R 4.1.2.2. The Tone Generator 4.1.2.3. Talkback 4.1.2.4. STEREO, CUT, LSP 4.2. The module P103D 4.2.1. Block Diagram 4.2.2. Description of function blocks 4.2.2.1. The BATT TEST circuit 4.2.2.2. Monitor sum 4.2.2.3. PFL sum 4.2,2.4. Monitor Headphone Amplifier 4.2.2.5. MONO 4.2.2.6. Control Panel 4.3. The module P103C 4.3.1. Block Diagram 4.3.2. Description of function blocks 4.3.2,1. The power supply unit. 4.3.2.2. The PFL output stage 4,3.2.3. AUX L / R channel 4.3.2.4. B - control 4.3.2.5. LINK'S 4.3.2.6. Control Panel 4.3.2.7. Reference Sources 4.4. Bills of Materials 4.4.1. List P103A 4.4.2. List P103B 4.4.3. List P103C 4.5. Connector assignment 4.6. Wring Diagram

15a Acousta P100 console system 5. The input module P104 5.1. Block Diagram 5.2. Description of function blocks

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5.2.1. Input stages 5.2.1.1. MIC 5.2.1.2. LINE 5.2.1.3. TG 5.2.2. Levels Fine - regulator 5.2.3. Pass filter 5.2.4. Phase inverter stage 5.2.5. Equalizer 5.2.6. Level distribution on the buss system 5.2.7. Red light and fader start 5.2.8. peak Indicator 5.3. Level diagram (see appendix) 5.4. Bill 5.5. Pin Assignment 5.6. wiring diagram 6. The sum of P105 module L / R (E1. E2) 6.1. Block Diagram 6.2. Description of the function blocks 6.2.1 summation 6.2.2. Signal selection and level control 6.2.3. The output stage 6.2.4. the limiter 6.2.5. The LED level meter 6.3. Level diagram (see appendix) 6.4. Bill 6.5. Pin Assignment 6.6 Schematic

16 Acousta P100 console system 7. The total auxiliary module P106 (E3) 7.1. Block Diagram 7.2. Description of the function blocks  7.2.1. Summation 7.2.2. Signal selection and level control 7.2.3. Output stage 7.2.4 The AUX IN L/R channel 7.2.4.1. Input stage 7.2.4.2. PFL and level control 7.2.5 LED level meter

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7.3. Level diagrams 7.4. BOM 7.5. Pin Assignment 7.6. Diagram (see appendix) -------------------------- 8. Technical data of the mixing system P100 8.1. General 8.2. Level 8.3. Impedances 8.4. Frequency responses 8.5. Control over backup 8.6, External voltages 8.7. THD 8.8. Crosstalk 8.9. Power supply 8.10. Mechanical data -------------------------- APPENDIX measurement protocol recommendations

17 Acousta P100 console system Acousta PORTABLE MIXING SYSTEM GENERAL A more than a decade of experience in developing, manufacturing and the distribution of equipment and for the professional sound equipment, combined with the knowledge about the specific needs of the practice enables us to offer you the portable console system Acousta P100. Through the use of sines CAD system, it was possible for us in the development of the P100 achieve optimum clarity of the controls. All technical drawings could end views are optimized with the help of a CAD system that has achieved the highest possible testimony about the details. The data used in each amplifier stage operational amplifier is the last stage of development and represent an optimum in terms of noise and power consumption are designed for battery-powered applications at all critical control points of the pathway are exclusively FET switches are used. This assures an environmentally independent switching. The input transformer is used MU metal shielding and guarantee absolute studio quality. The built-in output transformers are toroidal types are among the highest-quality end that can be used at this point.

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Per input model is an input jack for a microphone and an input jack for line available. These jacks are performed either XLR or Lemo F33-03. For the insert point is a jack ɸ 6m3 m. At the sum of each ∑l/∑2 are two output jacks, one for +6 dB and +15 dB for any level. All connection and transmission data corresponding to the ORF gazette No. 2.6. from 85-12-16

17a Acousta P100 console system DESCRIPTION The Acousta P100 Portable Mixing System consists of 6 Basic elements: 1. Main body (main frame) P101 2. Adapter / charger P102 3. Operating system P103 4. Input Module P104 5. Sum Module P105 6. Auxiliary Sum Module P106 Basic Case (mainframe) P101 The base case can be made in three sizes; for 6 input modules for 8 Input Modules for 10 input modules In addition, a mounting frame for 19 "rack technology is possible. CHARGER / POWER SUPPLY PIO2 Is built to the standards of the OVE and contains a dispersion toroidal power transformer. Acousta P1OO Mischoultsystem OPERATING SYSTEM PIO3 This module provides a solid unit and includes: Monitor unit PFL - Prelisten facility Measuring Oscillator On / off switch with power supply part Low battery indicator Talkback Speaker unit Additional amplifier (AUX, Tape Monitor, links, etc. ..)

18 On the rear wall of the module is located next to the AUX IN, AUX OUT (min 15pol. D sockets) TB Center, Monitor and Tape.L / R and the external power input in the form of a two-pin Lemo connector. The console can be operated with a DC voltage of 12 V to a maximum of 30 V. INPUT MODULE PlO4

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The connectors for the input module are mechanically connected to the module fixed. The input module has a rotary selector switch, which makes the selection of sources (MIC, LINE and TG). It activates the corresponding inputs shall set the gain and also ensures that switching from red light on fader start operation. The corresponding level - FINE knob allows optimum adaptation to the connected source. (See block diagram) The peak-level monitoring is carried out at three points of the input module 3 dB before clipping point. The built-in rumble filter, with switch be bridged. The -3 dB point is at 100 Hz, the slope is 6 dB / octave. The phase reverse switch allows that the incoming signal is rotated in its phase 180°. (Toggle switch with gold contacts) The three-time equalizer can be bridged by a switch (toggle switch with gold contacts) Its three center frequencies are 80 Hz + / - 12 dB, 2K2 Hz + / - 12 dB 12K Hz + / - 12 dB. The built-in slider is a plastic manufacturer conductive type Penny & Giles 104mm sliding path for fader start and micro switch. The channel mute circuit is designed to activate when no dalß additional noise modulation causes the audio signal. (FET) The pan controls allow you to assign the channel signal to the two principal sums E1/E2. The PFL switch routes the signal from the slider on the Cue rail (Not affected by the mute switch). The AUX send is activated by way of the slider. Resoldering by a jumper on the motherboard of the way but can PRE also be switched. TECHNICAL DATA Microphone Input: transformer, 48 V phantom power to DIN 45596 Input level: switchable -55, -40, -25, -10 plus fine setting +15 dB switchable gain setting affects the negative feedback of the input amplifier Input impedance: 1K ohm Source Resistance: 0 .. 200 ohms Common mode rejection ratio:> 60 dB at 10K Hz Line Input: transformer Input level: selectable 0, +6, +15 plus fine setting +15 dB switchable gain setting affects the negative feedback of the input amplifier Input impedance: 10K ohm Source Resistance: 0 .. 600 ohm Common mode rejection ratio:> 60 dB at 10K Hz Input Selector: Mic / Line FET switch circuit for switching the inputs and to provide a rough pre-selection of Input gain / attenuation. Crosstalk: Since only DC voltages are switched and the actual switching elements (FETs) immediately at the Input amplifiers are arranged can not speak about the Input selector appear. Fine level adjuster The level of fine adjustment of the negative feedback effect in the second stage and has a control range of 0 .. 15 dB (can be changed on request).

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Phase reverse switch A toggle switch with gold contacts causes the insert point to the switching of the incoming signal by 180% Subsonic filter A toggle switch with gold contacts enables the activation of Impact noise filter before the insert point. The -3 dB point of the filter is at 100 Hz, the filter slope is 12 dB / octave. Equalizer Using the toggle switch with gold contacts, a 3-band filter in the group Signal must be looped. Low frequency ......+/- 12 dB at 80 Hz 12 dB at center frequency .....+/- 2K2 Hz High frequency ....+/- 12 dB at 12K Hz Pan control The distribution of sound signals on El and E2 absorption at 10K Hz + / - 75 dB Cue Facility (PFL) A toggle switch with gold contacts on the signal before the shift register to the PFL bus on (no influence of the mute circuit). It thus enables the monitoring with headphones or on its own PFL output with appropriate Amplifier / speaker combination. Upper input level meter (Peak Indicator)  _______________________  Display in the form of a light emitting diode. Threshold point at - 3 dB of the maximum possible level. It wi measured at three points around the input module (Insert output before equalization, slider before). The waste of time Peak detector is 2 s. Mute switch A toggle switch activates an FFT with gold contacts switching stage. It is therefore a shift without causing audible noise possible. Flat rail regulator Make - Penny & Giles The sliding path of the flat rail regulator is l04mm. The damping in closed fader is at least 90 dB @ lK Hz +6 dB. A mechanical coupling of two or more regulators. Corresponding synchronization accuracy is guaranteed. Insert point The insert has an output level of 0 dB. He is after the rumble filter and before the equalizer and the slider (see block diagram). Aux send facility A toggle switch with gold contacts takes the signal to the channel slider off and it leads to a controller. The selected signal passes Σ3 on the bus. Connecting the modules The input and output units are connected to a gold-contact connector system. The bus system consists Buss Buss Σl Σ2 Σ3 Buss Buss Buss PFL monitor L / R Σl, 2.3 and PFL are as LINK IN LINK OUT and to interconnect multiple consoles on two 15 pin miniature D connectors. TOTAL MODULE P l O 5 The sums of l and 2 have an insert whose output level is 0 dB and is located in front of the master controls.

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Total control For the sum of the control Σl, Σ2 and Σ3 are flat rail regulators same types as built-in input module.The measuring points for the peak program meters are located on the Flat rail regulators. Limiter The total for l and 2 are limiters fitted. Limit empire heir: 20 dB Usually use point: 0 dBu dBu ± 0.25 Response: 500U S Reset time: can be adjusted continuously Slope: 2 dB to 20 dB of control The response of the limiter is indicated by an LED. In stereo program material via the LINK switch, the two limiters are connected to prevent excessive a shift of the stereocenter. Acousta Pl00 console system Level meter instrument Total per module is a 12 point LED level meter to Integrated DIN 45406. The inputs can be switched between total and monitor. In addition, there are two button that increase the sensitivity of the indicator at 9 or 20 dB. The measuring band is used to adjust means (tone at -20 dB) and sensitivity correctly for U-Matic audio level. Outputs The sums of Σl and Σ2 have two outputs in addition to the inserts. Both are floating, balanced and the other a +6 +15 dBu nominal. The output impedance is ≤ 60 Ω. The headroom is +14 dB based on an output level of +6 dBu. TOTAL AUXILIARY MODULE PlO6 The auxiliary module has PL06 sum or Σ3 is also called as Σl Σ2 and an insert point, desen output level is 0 dB and is before the master fader. Total control The master controls the Σ3 is a flat sheet of the same type as in the regulator input channel. The measuring point for the peak program meters for the rich Flat rail regulators. Level meter instrument In sum auxiliary module is a 12 point LED level meters integrated DIN 45406th The measurement input can be switched between power sum and PFL. In addition, there are two buttons that increase the sensitivity of the indicator at 9 or 20 dB. The tape measure is used to adjust means (tone at -20 dB) and sensitivity correctly for U-Matic audio level. AUX IN L / R channel The AUX IN L / R channel is intended as an additional line input. The internal level is 0 dBu nominal. The input impedance is l0K Ω. Output The sum in addition to the insert 3 has a floating transformer-balanced output with a level of +6 dBu nominal. The output impedance is ≤ 60 Ω. The headroom is + l4 dB relative to an output level of +6 dBu. OPERATING SYSTEM PlO3 Command facility

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The device has a built-in command microphone, and an XLR input jack for an external microphone command. The microphone level is adjustable and can be switched on Σl, Σ2 or Σ3. As a fourth possibility STUDIO TB is provided. When activated, this switch gets the amplified signal located on the rear wall of the module socket to a microphone. Monitor output The two-channel monitor output can be muted using CUT switch. The output impedance is 20 Ω. The level is adjusted with the monitor controls. If the function STEREO enabled, so dial B is inactive, then controller A uses both channels synchronously. The MONITOR jack is used to listen to the monitor via headphones. If the LSP switch is pressed, the monitor can be heard via the speakers built-in. The output for the built-in speaker is around 500 W. Two button strip (L / R) allow the selection of the desired Signal interception. It can be selected: TAPE L R IN 9 10 IN 7 8 IN 5 6 IN 3 4 AUX L R Σ 3 3 Σ 2 PFL With the help of the MONO switch is connected to the left of the right row mono. Measuring Oscillator The oscillator can be deactivated with the OFF switch on three frequencies can be switched. (63 Hz, 1K Hz, 10k Hz ± 5%) it can internally on all input channels, total channels and AUX IN The input channels are switched flat rail regulator set to -10, the output level is 0 dBu. Battery Test A 3-point LED display gives information about the current battery state. In a display of 100% a function of time is guaranteed for at least 10h. A display of 75% indicates a guaranteed delivery time of 7.5 h. These two indicator lights illuminate only when queried, ie when pressing the BATT TEST key to not waste energy. If a discharge reaches the batteries, which ensures the functioning of the device just under an hour, lights up even without pressing the BATT TEST button on the BATT indicator. All these figures refer to DURACELL ® Alkaline MN 1300-B2 MONO LR20 1.5 V batteries. Power Supply The wireless operation allow 16 series-connected batteries or batteries of 1.5 V LR20 Size MONO dimension D. (Specific information on times see Appendix) The external power supply P102 allows the use of an equivalent battery power operation, and the simultaneous charging of the batteries. For network operation Separation from clay and ground protection network possible

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The external power supply P102 may also be used as plug power supply, when neither battery nor battery operation is possible or desirable. Execution of the input and output jacks All input and output jacks are designed as LEMO ™ types and wired according to ASA. An optional version with XLR is possible. Headphone stereo jack sockets .........¼" TRS insert point ...............................¼" Dimensions P101/10 Basic Housing: 523mm wide 502mm deep 165mm height other details see item 1 mechanics Sound technical data see measurement protocol Acousta MIXERS ARE MADE IN AUSTRIA AND DEVELOPED The power supply P100S 2.1. General The power of the P100 can be done in 4 ways 1) External 2) Internal Battery 3) Internal mono cell 4) Internal Power supply plug 2.1.1. External supply On the rear wall of the P103 is a 2-pin LEMO connector for external power supply of the unit. It may come filtered DC voltages of 11 V ... 30 V = applied. WARNING! Before connecting an external power supply should be ensured that no single cell in the battery compartment, since otherwise the batteries leak and damage the unit could. If there are batteries in the compartment must be at least the external voltage V = 27, otherwise the battery would not charge. The operation of the console but can occur at voltages below 27.V =. When charging the batteries, make sure that the charging time of 14 hours is not exceeded significantly, since overcharging may shorten its life batteries. 2.1.2. Internal Battery To operate the device using 16 batteries with correct polarity into the battery compartment, slide-lock battery, ev battery charge - the console is ready for use. WARNING! Special precautions, see 2.1.1. The playing time is dependent on the battery type and the version of the console (6,8,10 channel). They can therefore vary between 2h and 8h. (Specific recommendations and test results, see Appendix.) Acousta P100 console system 2.1.3. Internal mono cell To operate the device using 16 single cells into the battery with correct polarity, battery slide lock - the console is ready for use.

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WARNING! Special precautions, see 2.1.1 The playing time is dependent on the battery type and the version of the console (6,8,10 channel). They can therefore vary between 5h and 15h. (Specific recommendations and test results, see Appendix.) 2.1.4. Internal Power supply plug The optional Power supply plug-P102 has the same exterior dimensions and connectors such as the battery slot. For stationary operation, it is indispensable to the closure load a network input jacks and two (ground and audio ground). The plug-in power supply has to make the task as a secondary function as a charger for battery operation for simultaneous operation of the console. The casing is earthed and guidelines designed to OVE. 2.2 Block diagram  Acousta P100 console system Description of Function Block By the external input (LEMO connector) is the voltage supplied by an internal fuse in three parts 1) The Regulator LM317 2) bypass to the relay contact 3) On the stabilization circuit 2.3.1. The charge controller 01 317 The charge regulator LM317 has an internal power limit for self-protection. The charging current for the batteries is set with the resistor R, with the power to = 1.2 / R = 1.2 / 3E3 Ω ≈ 363m A can be calculated. Buffering as CI and C2 and noise suppression was provided. To work with the internal voltage can was installed as protection against the opposing voltage diode D1. Other technical data, see the National LM317 Linear Data Book. 2.3.2. bypass Load the batteries urn with a constant current to, and yet a undisturbed operation of the console is possible has been provided a relay at Connecting an external power supply to prevent additional stress on the battery and switches the supply from the battery to the external socket. 2.3.4 stabilization circuit As found when an external power supply voltages of 11 V. .. 30 V = use, a circuit must be provided, the following relay switches in the full field for sure, but not overloaded. A simple voltage stabilization at 5 VDC meets this requirement. To protect against inductive voltages against D2 was necessary. 2.3.4. outputs The output for battery and DC / DC converter via a 32-pin PANDUITT ™ connector (see pin assignment based board), the output for Battery charging control over a 5-pin connector - both on the module P103 ⊂. 2.3.5. The cover contact

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As additional protection against deep discharge of batteries, or batteries from leaking under the right Camlock ™ closure is a micro switch installed, the console is switched on, despite the power breaks and not as reliable permits work with the lid closed of the console. Acousta P100 console system Functional description of the P110 DC / DC converter General The circuit is based on the principle of a flyback converter. Thus, the generation of multiple output voltages under the control of a control loop is enabled. An isolated upper measuring winding are magnetically coupled to the output voltage through D7, R15, C22, C17, VR1, R6, R5, and fed as the actual voltage switching regulator. The target value is generated in the controller IC. R7, C27 determine the proportional and the integral component of the PI controller. The circuit is a so-called "Current Mode PWM Controller" executed. This new circuit technique has the advantage of relatively independent of the output voltages of the Input voltage. This will achieve the necessary application with this high hum rejection. The switching regulator ∪ 1 generates pulse width modulated square wave signals. (Pin 6) to control of the power field-effect transistor (FET) Q4.These square waves have a frequency of about 40th KHz (determined by R9, C19). Used during the activation phase of current flowing detected fiber Q4 R12, R10, and C19 in the IC compared with the output of the internal PI controller, and subsequently limits the pulse width. The primary limitation of the maximum current to the protection of Q4 is thus ensured inherently.  The converter The galvanic isolation of input circuits of the Output circuits is ensured by the transducer W1. Due to the relatively high switching frequency ferrites are special in such applications is necessary. These materials must exhibit low hysteresis and eddy current losses. An interleaved winding structure and multi-wire wound technology for low stray inductances, as well as low copper losses. Due to the high switching frequency, the copper losses is determined primarily by the skin effect and the current displacement of the wire. Winding short-circuit turn serves as an umbrella for the Converter box litter caused inductions.

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Power transistor The switching times of the transistor are in the 50th .. 100 ns range. Thus, the dynamic losses (switching losses) are largely reduced in the transistor. C18, R13, D13 serve as a relief when you turn off the transistor and to limit the voltage overshoot caused by the leakage inductance. The output circuits D1, D2, D3 are used for rectification of the transformer secondary voltage while Energy is transferred over the C7, C4, C8 and stored. Since Electrolytic capacitors do not have RF characteristics are distinct, Cl, C3, C2 respectively connected in parallel. DR2, DR1, DR3 and the respective corresponding capacitors C6, C5, C9 and C11, C12, CIO to serve Suppression of high-frequency noise voltages. D4, D5, D6, limiting errors in the event the output voltage and to provide a short circuit overload. So are  The circuitry parts over voltage protected. U2 generated from a 15V input voltage, a 12V output voltage. C34, C35, C37, C36 reduce the mode voltages to ground. The input filter The components of the C30, C28, C29, C31, C32, C33, and DR4, DR5, Double π filter is configured to absorb from the transducer caused RF components on the input lines. The power supply of the control IC's Due to the limited supply voltage range of Circuit is usually to provide for a substantially constant voltage's supply of the IC. This is the Q1, Q2, Q3, and the respective corresponding Components ensured. On the back wall of the P103 modules are the input jacks L and TAPE TAPE R. These two inputs are high-level inputs, transformer balanced and floating Identification of circuitry to the line inputs      The input is an RC filter to suppress any one scattering RF (radio frequency). Then, the input voltage ahout the resistors R17, R18 and R21, R22 converted into a current, transformed and converted back again into a voltage by U2. After the input stage is a FET switch, the signal can intrude on the monitor buss.                  

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                                     4.1.2.2. The tone generator The built-in tone generator provides the ability to choose between three stationary frequencies (63 Hz, IK Hz, 10K Hz) to choose. Through the OFF switch, it can be deactivated, ie. also the oscillation of the oscillator is stopped in order to reliably rule out any effect. The first part of U3 is the actual vibration generator, while the second part of U3, the rectification of the signal takes over. This amplitude-dependent dc voltage is fed to a voltage-controlled resistance, and limits the amplitude to the value set by VR1. The voltage-controlled resistor is built using a FET. By the voltage by the zener diode D10 and resistors R66 and R68 of the field effect transistor biasing voltage of the rectifier is counteracted. 4.1.2.3 Talkback The source of the talkback unit is built-in electret condenser microphone either, or other external microphone. Acousta p100 mixing system By pressing the switch EXT MIC of built-in microphone is switched on and off externally. via a FET switch, the AC signal is applied to U1, where it is amplified by ca.46 dB. The amplified signal can be adjusted by the potentiometer P1 in its amplitude. The following stage is a power amplifier to drive the Output transformer TR3, which thus makes the talkback output floating and symmetrical. The power amplifier drives not only the output transformer, but also the distribution STUDIO Σ1, Σ2, Σ3. If none of the buttons activated, optionally, the monitor on the L Talkback female are laid. Otherwise, the microphone is off. When I press the button STUDIO can be spoken in the talkback jack. Should be spoken on the other hand Σ1,

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Σ2 or Σ3, the appropriate keys are actuated. If any of the buttons is active, does the DIM function into force, the PFL and the monitor unit by about 16 dB damping in order to avoid feedback. 4.1.2.4. STEREO, CUT, LSP S12/STEREO SLI / OUT S10/LSP a) STEREO (description see Section 4.2.2.5.) b) CUT With the help of the CUT switch can monitor the output jacks on the rear panel of the monitor away from the P103 amplifier output. c) LSP When the PFL switch is activated by the signal amplifier disconnected PFL and the PFL output stage is now powered by Monitor L / R.    4.2. The module P103B 4 "2.1 Block diagram 4.2.2. Description of the function blocks 4.2.2.1. The BATT TEST circuit The BATT TEST circuit consists of two amplifiers connected as comparators OP. A must to guarantee at all operating conditions stable behavior of the supply voltage to 10 V are stabilized operating voltage falls below a value of a playing time of about 1h equals, lights on the BATT LED to ensure a timely change of the battery slot. The other two LEDs to display only on pressing the BATT TEST key to operating condition. 100% means a duration of ≥ 10h. 75% means a duration of ≥ 7.5 h (play times see Appendix) Acousta P100 console system 4.2.2.2. Monitor sum The monitor consists of the summing amplifier U2, whose negative feedback with the help of two FET switches can be changed. By activating the DIM function of the gain factor is attenuated by 16 dB. 4.2.2.3.PFL sum The PFL consists of the sum of the summing amplifier negative feedback with the help of a FET switch can be changed. By activating the DIM function of the gain factor is attenuated by 16 dB. The following second part of U3 rotates the phase by 180 °. 4.2.2.4. Monitor Headphone Amplifier The monitor headphone amplifier circuitry is identical to the totals of the Output amplifiers. U4 is the push-pull stage Q12 and Q13 amplified and has an output impedance of 20 Ω. 4.2.2.5. MONO The incoming lines M1 and M2 are combined and to the regulator. P2 1-2 A L / R set. The output is now the headphone amplifier is available, while the R is led out to the module P103A, which acts through the switch STEREO either A and stereo controls, or with non-activated STEREO switch controller B, the modulation takes the R-channel. Acousta P100 console system

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4.2.2.6. Keypad The keypad is a virtual center for all the intrusion, which will take place on the monitor L channel. A triggering means it is mutual. Double occupancy are at normal Operation not possible. Since the switching unit switches only DC voltages a cross-talk between the switches is not added, because the actual switching points are located spread throughout the console. All set points are with FET switches realized and therefore absolutely no rattling or buzzing. By pressing the buttons to listen to the line inputs is also possible if the addressed channel was switched on just in MIC position. In summary, then either: PFL, total 1, total 3, Aux L, in line 1, in line 3, in line 5, are selected in line 7, in line 9 and L tape and played back. The precise point of signal origin can be traced to the wiring diagram. 4.3.2.3. The AUX L / R channel The two 15-pin subminiature D connector on the rear wall of the P103 called AUX IN, AUX OUT offer, besides the possibility to interconnect multiple consoles (LINK function section 4.3.2.5.) Also even that of a additional stereo auxiliary input. This high-level stereo input is floating, balanced and circuit technology identical to a standard line input. The output of the circuit can about the FET switches Q5, Q6 are switched on Monitorbuss. The intrusion occurs with activation of the switch and AUX AUX L R. 4.3.2.4. The B knob The B is the volume control knob on the monitor R STEREO switch is not activated. If the STEREO switch is pressed, the controller is inactive. 4.3.2.5. LINK's If multiple panels are interconnected to more than 10 channels available, it is provided as an optional adapter cable LINK1. This is the LINK OUT of the low console plugged into the LINK IN of the higher-desk and makes it the most significant to the master console. Retained all the functions, the sums Σl, Σ2, Σ3 and PFL are linked. The monitor function is also obtained for each individual desk. 4.3. The module P103C 4.3.1 Block Diagram 4.3.2 Description of the function blocks 4.3.2.1. The PFL output stage The PFL is connected to the power amplifier power amplifier LM 386 realized. The maximum output is about 500m W5, the idle current is only about 5 m A. For this reason this module is ideal for battery operation. The output of the amplifier reaches the PFL jack and a switch contact to the built-in

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broadband loudspeaker. When headphones are connected, the speakers are muted. Acousta P100 console system 4.3.2.6. The keypad The keypad is a virtual center for all switching will take place on the monitor R channel. Dual triggering assignments are not possible in normal operation. Since the switching unit switches only DC voltages, a cross-talk between the switches is not an issue because the actual switching points are scattered around the desk. All set points are realized with FET switches and therefore absolutely no rattling or buzzing. By pressing the buttons to listen to the line inputs is also possible if the addressed channel was switched on just in MIC position. In summary, then either: sum 2, sum 3, R aux, line in 2, in line 4, in line 6, in Line 8, Line 10 in and R are selected tape and listened to. The precise point of signal origin can be traced to the wiring diagram. 4.3.2.7. reference sources Serve as reference sources for the VR1. Peak level and the VR2. PPM level meters. VR1 is usually about 3 dB enter set the clipping point, to achieve an early alarm system to the early frontier. The setting of VR2 is dependent on the definition of the 0 dB point. It is nominally set at 0 dBu Ξ Voff 775m. Acousta P100 console system 5. The input module P104 5.1. Block diagram 5.2 Description of functional blocks 5.2.1. Input stage 8 levels of adjustable range switch has three functions: 1) MIC 2) LINE 3) TG The switch is a diode matrix that directs the information to the FET switch. Therefore, only control voltages can be switched off. The switch is thus free of crackling. The input jack on the back of the module is Immediately followed by an RC filter (R1, R2, C1) and the transformer ST5393 / 2 from Hauffe. The transformer operates as a voltage translator. It has a primary Center tap to feed the 48 V DC phantom power for condenser microphones from the start. The speed ratio is 1: 1 The secondary signal of U1 is amplified by a factor on which the selector switch. However, the sign must be inverted, since the information referred to on the selector switch the input sensitivity. The highest input sensitivity is -55 dB. Maximum levels should be applied from -10 dBu to not restrict the defined headroom of 20 dB. The IC 4562 was selected by Raytheon as the amplifier element of as part of this high gain, combines wide bandwidth and low noise within itself. Moreover, it is able to drive a load of 600 Ω with a level of 20 V pk-pk, although the current consumption is only about

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without load LM8 A. A distortion factor of 0:005% at a level of 9 V off from making this IC, the optimum for this application. The channel separation of the two surgical amps is: > 100 dB up to 20K Hz > 120 dB up to 2K Hz 5.2.1.2. LINE Following the LINE input jack on the back wall of the module follows similarly to the MIC input stage of an RC filter. However, carried out by the 1% resistors, a voltage power converter, at the secondary side of transformer ST2524 / 4 from Hauffe by a reversal of the process is reconverted into a voltage. The advantage of this detour is possible by the miniaturization of the transformer input impedance under normal LINE (10K Ω). Through the FET's the damping factor is set to the value of the selector switch. (Increasing the negative feedback) The greatest sensitivity is 0 dB. Maximum level should be fed from +15 dBu to not restrict the defined headroom. 5.2.1.3. TG TG activates the position of the selector switch to the next third of the main board Input, the tone generator. This input module can on each of the P104 pre-selected tone generator can be switched to the program. The nominal gain of the generator input is 0 dB. 5.2.2. The FINE level - Controllers After the completion of the selection and input stages of the source through the selector switch enables the level FINE - Controllers an additional control range of 15 dB. This means that the maximum possible gain on the input module 55 dB (MIC) + 15 dB (FEIN) + 10 dB (FADER) = 80 dB. In LINE position +6 dB is obtained at the right stop fine adjustment an input sensitivity of -9 dB (U-matic audio level) Acousta P100 console system 5.2.3. Subsonic filter The passive RC low-cut filter has built up its threshold point (-3 dB) at about 100 Hz with a slope of 6 dB / Okt. 5.2.4 Phase inverter stage The input impedance is nearly constant in both switch positions 9k Ω. This results in a constant load resistance of the passive Rumble filter, for a constant characteristic of the filter is necessary.

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While not in reverse phase U2 act as a non-inverting amplifier V [dB] ≈ 20 * log (R1 + R2 + R3) / (R1 + R3) = 120k Ω / Ω ≈ 1.1 110k However, the full voltage is not amplified, but only by the voltage divider R4, R6 resulting. V = R6 / (R6 + R4) ≈ 0909 The overall gain of the inverting amplifier is thus V [dB] ≈ 20 * log (0.909 * 1.1) ≈ 0 When switched on we get a reverse phase inverting amplifier whose gain is 0 dB as the amount, just in reverse. V [dB] = 20 * log R2 / RI = 0 The voltage at the insert point is therefore not a switch affects only their polarity. The level at the insert point, is 0 dBu. Acousta P100 console system 5.2.5. equalizer The amplifier - or attenuation level of the equalizer is formed by the first part of U4 (1,2,3), which is designed as a non-inverting amplifier. The center of the potentiometer is a virtual ground point and thus results with R39, a voltage divider, which requires a level of 12 dB loss. U4 is only by the gain factor of 12 dB will offset this loss. When the potentiometers, the slider moves, it changes this balance depends on the frequency in one direction or another. This frequency dependence is achieved through the wiper connected to the filter. The filter is designed for treble of the components R41, C36, a passive high pass. The filters for mid and bass are implemented as active bandpass filters, with the frequency-determining components R62, R64, C41, C42 for the middle band. , R65, R67, C43, C46 are decisive for the low band. The transition-or mid-frequencies are about 80 Hz in the bass range at approximately 2K2 Hz in the midrange and at about 12K Hz in the high range. The gain is a maximum of ± 12 dB in all areas. The active part in the mid and high volume is the U3, which is run by a LF 422CN, not least because of its high input impedance ensures a narrow tolerance range of filter frequencies. By a switch, the entire tone control EQ stage activated or deactivated. Acousta P100 console system 5.2.6. On the Buss-level allocation system After the tone control stage of the PFL is available for preview of the signal. The level with the PFL bus is sent with activated switch is nominally 0 dBu. Parallel to this is the slider. Use is a 104m m Conduktive Plastic Penny & Giles Series 3000 Because of the flat slider is at position 0 is a gain reduction of -10 dB, has by the following amplifier stage U4 level of loss can be compensated for. To the PRE and POST signal to both level and in phase on a machine is, the amplifier stage as a non- inverting amplifier switched. After the PRE / POST switch, a level control is used to feed the Σ3. the MUTE switch, by sending to Σl Σ2 and can be inhibited if the signal leads to the pan control with which allows the ratio between left and right can be determined. When split resources, both Σl Σ2 both assigned the same signal. However, would bring

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the knob in the central position 6 dB drop in voltage. However, since only 3 dB are allowed, the resistors R92, R93 were added. 5.2.7. Red light and fader start By the step selector switch in the input stage with. Using a second switch between MIC and LINE level distinction. The contacts are green, red and black runs on the rear panel of the module P104. Acousta P100 console system 5.2.8. Peak Indicator The module runs in the signal voltage is measured at three different Points picked, rectified, and with a board on the basis supplied reference voltage (Ref peak) were compared. If it exceeds the value of this reference voltage ithe peak LED lights up and indicates it will soon reach the systems limits. (Variable, but typically about 3 dB below clipping level) In order to prevent interference with the audio paths through this switching process, U3 receives its own supply. The asymmetry of the same individual voltage resistors R101 and R102 will be made to the smaller headroom of the circuit meets the voltage division at the inputs. Acousta P100 console system 6th The sum of P105 module (Σ1, Σ2) 6.1. Block diagram of 6.2 Description of functional blocks 6.2.1. Summation As a result of the Pan potentiometer on the input module P104 loses Σ1 and Σ2 desired 3 dB level. The node U12 amplifier compensates for this loss again and rotate the phase by 180 ° to 0 db at the insert again to obtain the correct phase. To eliminate the disorders that might intersperse on the bus board, the non-inverting input is carried as a quasi-balanced bus line. Acousta P100 console system 6.2.2. Signal selection and level control This circuit has the option of an alternative between the signal coming from the insert and the internal signal generator with the help of the TG select its source. Immediately after the selection of the desired signal can be activated by the PFL switch can be listened to. Simultaneously determines the position of the slider the level that is sent to the non-inverting input of the following U8. Since the effect of the slider at position 0 of a voltage drop of 10 dB, the gain of U8 is set to appear at the output returns to 0 dBu. Follows as a switchable insert in Chapter 6.2.4. limiter described. 6.2.3 The output stage

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The sum of P105 module has two direct outputs on XLR or Lemo with a level to a nominal +6 dBu and +15 dBu are. These outputs are transformer balanced and floating. The output transformer is a toroidal type of company called RK 685th Hauffe To listen to the output signal can directly branches off just before the transformer, an FET switch, which can run at the Monitorbuss L P105L, P105R when running on the Monitorbuss R by the control lines can be switched. The DC voltage control comes from the motherboard. 6.2.4. The limiter The limiter has a VCA ™ as a central control of dbx. The IC contains all current-dependent gain control of the necessary components and can also be tuned by external circuitry to a minimum of distortion. VR ₃ serves as a control element for this purpose. The threshold of the limiter is adjusted by the trimmer VR ₁ and summed to form a continuously variable DC voltage to control voltage and thus fixed. That the VCA level achieved in the passive range an accurate gain of 0 dB, the trimmer VR ₂ is provided. The limiter can be activated by the ON switch. In the OFF position, the input and output that is completely separated from the rest of the circuit. The limiter can be measured as an independent unit, or matched. (TPI, TP2) The first part of U₉ operates as a current-voltage converter which converts the Current output of the VCA in the equivalent output voltage changes. The output voltage is tapped off and with U₁₀ and U₁₁ the amplitude-dependent control voltage is obtained. Using the Limiter switch the two can be linked. I.e. unequal levels of stereo program does not move the panorama. P₁ is designed for continuous adjustment of the release time of the RT Power limiter. The second part of U₁₀ works as a trigger circuit and shows the work of the Limiters by lighting a LED. Acousta P100 console system 6.2.5. The LED level meter The LED level meter operates as an independent function in the module group. on the Monitor / Master Schelter the signal is selected, the display will come on. This signal passes through a programmable gain amplifier in his (first part of U ₇). The programming is done by the switch S ₁ and S ₂, which alter the negative feedback of the amplifier. If no button is pressed then the amplification factor of 1 If the switch S ₁ active, is raised by 9 dB. This means that signals with a level of - now 9 dBu a reading of 0 dB effect. (Standard U-Matic audio levels) Button is activated ₂ S, there is a 20 dB increase urn. I.e. that

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Signals with a level of - 20 dBu cause a display of 0 dB (Test tone levels - 20 dBu to protect the ear and the speaker system) The second part of U7 is wired as a rectifier, which in Conjunction with R22 and C5 receives an inertia to detect even fast spikes more clearly. The rectified voltage is now the comparators in parallel as switched OP's U1 to U6 and compared with the divided by the resistor chain R52, R2 to R14 reference voltage. When exceeding the respective reference voltage of the amplifier locked tilts to negative, the output diode D17-D28 and the LED strip is fed by the next surgery. Since all the LEDs are connected in series does not increase the current required when several or all LED's light up. The lighting current iF is determined by the resistor R100, of the transistors Q5, Q6 provides a constant current source. IF A = UBE/R100 ≈ 3m. Acousta P100 console system 7th The auxiliary module P106 sum (E3) 7.1. Block diagram of 7.2. Description of function blocks 7.2.1. Summation Similar to the sum of P105 module causes the U12 a summation process node and a subsequent rotation of the phase by 180 ° so that the insert point is in phase and the level of 0 dBu. The non-inverting input of the first amplifier was parallel to Common mode rejection problems that could sprinkle on the base board to effectively suppress. The only difference to the total module P105 is that no increase the level urn 3 dB is necessary because the Σ3 Buss is already transmitting at 0 d13. 7.2.2. Signal selection and level control This circuit has the option of an alternative between the signal coming from the insert and the internal signal generator to select using the TB switch its source. Immediately after this selection, the desired signal through activation of PFL switch can be listened to. Simultaneously determines the position of the slider the level that is sent

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to the non-inverting input of the following U9. Since the effect of the slider at position 0 of a voltage drop of 10 dB, the gain of U9 is set to appear at the output returns to 0 dBu. 7.2.3. The output stage The auxiliary total P106 module has a direct output on XLR or Lemo, whose level is a nominal +6 dBu. This output is fully floating transformer balanced, the output transformer is a toroidal type of company called RK 663rd Hauffe To listen to the output signal can directly branch off just before the exchanger two FET switches, which separated both on their own, as can also be connected together to the monitor via the control lines. The DC voltage control comes from the motherboard. Acousta P100 console system 7.2.4. 7.2.4.1 Input Level The two input stages are identical to the circuitry of the LINE input level of the module P104. After the 5-pin Lemo connector or XLR is an RC filter in the signal path to attenuate RF interference. The two 4K64 resistors convert the voltage into a current of U11 through the current / voltage converter U10 or reconverted into a voltage. The exchanger is of the firm Hauffe and is called ST2524 / 4 At the level of output level is 0 dBu. 7.2.4.2. PFL and level control Directly at the input of circuit detail, the PFL signal decreased, and when the switch is on, switched on. In parallel, the voltage divider is built up by R59, P1.1, P2.1, or the equivalent sum to 2 - R67, Pl.2, P2.2 When fully opened P2 and P1 is the center position of a slider of the P2 Voltage drop of about 6 dB. The next U10 and U11 level compensates for this loss again and sends a -3 DB signal on the bus, until the MUTE switch is activated. P100 console system 7.2.5. The LED - VU The LED - meter works as an independent function in the module group. the PFL / master switch, the signal is selected, the display will come on. This signal passes through a gain in his programmable gain amplifier (first part of U7). The programming is done by the switch Si and S2, which alter the negative feedback of the amplifier. If no button is pressed then the amplification factor of 1 If the switch is active Si is raised by 9 dB. I.e. that signals with a level of - 9 dBu now an ad effect of 0 dB. (Standard U-Matic audio levels) Switch S2 is turned on, the increase will be around 20 dB. I.e. that signals with one of Pagel - 20 dBu

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a reading of 0 dB effect (test tone levels - 20 dBu to protect the ear and the speaker system) is the second part of U7 switched as a rectifier, which receives in connection with R37 and C23 an inertia to also fast signal peaks still clearly recognize them. The rectified voltage is then connected as a parallel to the comparators outputs U1 to U6 performed with the R98 and the resistor chain R42 compared to R53 divided reference voltage. When exceeding the respective tilts Vergleichsspannun locked the amplifier in the negative, the output diode D17 and-D28 is the LED strip is supplied from the next output. Since all the LEDs are connected in series to increase the current required no ouch when several or all LED's light up. The lighting current iF is determined by the resistor R100, of the transistors Q5, Q6 provides a constant current source. iF = UBE/R100 ≈ 3m A Acousta P100 console system 8th Technical data of the mixing system P100 8.1. General relate voltage in dBu always to 0.775 V 0 dBu ≣ 0.775 V

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All channel and master faders are set to position 0. Line outputs are 600 Ω. External sources have a source impedance of 50 Ω for line inputs, 150 Ω at MIC. All values are in the range of 16K Hz ... 30 Hz unless otherwise indicated. Specified levels are measured with a sine tone. 8.2. Level Sensitivity microphone: -70....-10 db Sensitivity Line in: -15....+15 db Level at the insert points: 0 dBu Output level: +6 dbu, +15 dBu Monitor level: 0 dBu 8.3. Impedances Microphone input impedance: ≥ 1K Ω Input Impedance Line In: ≥ 10K Ω Source impedance of the insert: ≤ 200K Ω Source impedance of the line outputs (+ 6 dB: ≤ 50 Ω 8.4. Frequency responses Filter off: -0.5...+0.5 dB 3 dB filter off at key points 30 Hz...16K Hz (monotonously falling outside) Pass filter 100 Hz 12 dB/Octave Treble controls 100 Hz ± 12 dB Depth control 50 Hz ± 12 dB Presence filter 2K2 Hz ± 12 dB 8.5. Headroom Headroom front of the channel controller (Ktot = 1%) 20 dB Headroom before the master fader (Ktot = 1%) 20 dB Maximum level of the line outputs, Rʟ 600 Ω 20 dBu 8.6. External voltages The external voltages are rms values with an equivalent noise bandwidth of 20 Hz 20K Hz ... (Audio Precision System 1 or equivalent instrument). Equivalent input noise of the microphone input, source impedance of 200 Ω -126 dB

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Noise ratio at the sum output, Total regulators closed: ≥ 96 dB Total control open: ≥ 84 dB all control inputs open switch position +6 ≥ 78 dB 8.7. THD +6 DBu input and output, 31.5 Hz ... 16 kHz all permissible level according to level diagram 60 Hz ... 10 kHz ≤ 0.2% 8.8. Crosstalk channel to channel ≥ 80 dB Pan attenuation ≥ 55 dB Fader attenuation (40 Hz .. 10K Hz) ≥ 90 dB (40 Hz .. 16K Hz) ≥ 85 dB 8.9. Power Mains voltages 220V ± 20% External power supply 12 V ... 30 V Electricity consumption P100 6 channel ............ 350m A @ 30 V 8 channel ca.400m ............ A @ 30 V 10 channel ............ ca.450m A @ 30 V Internal operating voltages: ± 15 V amplifier Internal operating voltages: 48 V phantom power for mic 8.10. Mechanical data see item 1 mechanics