27901 cro pip beq manual

8/6/2019 27901 CRO Pip Beq Manual

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1 WelcomeThank you for purchasing theCrown P.I.P.BEQ accessory.P.I.P. modules are designed toinstall quickly into the rear panel ofmany Crown amplifiers. P.I.P.stands for Programmable Input

Processor. Their versatile featuresexpand the capabilities of youramplifier and enable you to cus-tomize it for your particular needs.

The P.I.P.BEQ adds many fea-tures of BoseControllers to the in-put of your amplifier. Each channelincludes a custom equalizationnetwork for the Bose loudspeak-

ers. Separate response curves al-low the models 8, 25, 32, 802 and

BEQ

ProgrammableInput Processor ( P. I.P.)

+ +OUT IN

C H - 2

+ +IN OUT

C H - 1

Fig. 1.1 P.I.P.BEQ with Barrier Block Connectors

502A to be operated as full-rangeor bi-amped systems. The equal-ization can be turned off if desired.

Balanced inputs and daisy chainoutputs use removable barrierblock (shown in Figure 1.1) or XLR

connectors for quick solderlessconnection.

Feature Summaryt Defeatable Bose loudspeaker

equalization for each channel.

t Full-range or bi-amplified equal-ization curves provided.

t Separate ground lift jumper forboth input and daisy chain out-put.


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12345678

ON

910

12345678

ON

910

12345678

ON

910

12345678

ON

910

E

F

B

CA

802

NORM

D

F

E

R240

R140

NORM

IHA

G

802

S200

S201

S100

S101

FUL

SUB

BY

EQ

BY

EQ

FUL

SUB

BY

EQ

BY

EQ

Fig. 2.1 Facilities


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2 Facilities

A. DIP SwitchesThese DIP switches select the EQsetting for the various Bose loud-speaker models with which theP.I.P.-BEQcan be used.

B. Model 802 JumperThis jumper is used with the DIPswitches to select the model 802 re-sponse.

C. Daisy Chain JumperA jumper block is provided to con-trol the signal that feeds the daisychain outputs. When the jumpers

are moved to EQ position, thedaisy chain outputs receive theequalized signal. If the jumpersare moved toward the Bypass po-sition, the daisy chained outputsreceive the unaltered input signal.

D. Daisy Chain GroundLif t Jumper

Remove this jumper to isolate thedaisy chain output ground fromthe chassis ground. Isolation isthrough an 82-ohm resistor and 0.1-microfarad capacitor.

E. Output ConnectorBalanced 3-pin barrier block or

XLR connectors are used for daisychain output to other equipment.

Mating solderless plugs are in-cluded for barrier block connectors.The plugs are labelled for correctwiring.

F. Input ConnectorBalanced 3-pin barrier block orXLR connectors are used for inputto each channel. Mating solder-less plugs are also provided forbarrier block connectors. Theplugs are labelled for correct wir-ing.

G. Input Ground LiftJumper

Remove this jumper to isolate theinput ground from the chassisground. Isolation is provided withan 82-ohm resistor and 0.1-micro-farad capacitor.

H. Equalization JumperThe Equalization Jumper enablesor disables the loudspeakerequalization network for eachchannel. These jumpers do NOTaffect the daisy chain ouputs.

I. Model 502B JumperThis jumper is moved to the SUB

position to select the 502B(subwoofer) response curve.


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X = switch position is unimportant

Switch Number

Model 1 2 3 4 5 6 7 8 9 10

25 & 32 Full Range ON Off Off ON ON ON Off Off ON ON

25 & 32 Bi-Amplified ON Off Off Off ON ON Off Off ON ON

8 Full Range ON Off Off ON ON ON Off ON ON Off

8 Bi-Amplified ON Off Off Off ON ON Off ON ON Off

402 Full Range Off Off Off ON ON ON ON ON ON Off402 Bi-Amplified Off Off Off Off Off Off ON ON ON Off

502A Full Range ON Off Off ON ON ON Off Off Off Off

502A Bi-Amplified ON Off Off Off ON ON Off Off Off Off

802 Full Range Off Off ON Off ON Off ON Off ON ON

802 Bi-Amplified Off Off Off Off Off ON ON Off ON ON

502B X X X X X X X X X X

Switch Bank S100

Table 1S100 and S101 Switch Positions vs Model


Switch Number

Model 1 2 3 4 5 6 7 8 9 10

25 & 32 Full Range ON Off Off Off X Off Off Off ON Off

25 & 32 Bi-Amplified ON Off ON Off X Off Off Off Off Off

8 Full Range ON Off Off Off X Off Off Off ON ON

8 Bi-Amplified ON Off ON Off X Off Off ON Off ON

402 Full Range ON ON ON ON X ON Off ON Off Off

402 Bi-Amplified ON ON ON Off X ON Off Off Off Off

502A Full Range Off Off Off Off X Off Off Off ON Off

502A Bi-Amplified Off Off Off Off X Off Off Off ON Off

802 Full Range ON ON Off Off X ON ON Off ON Off

802 Bi-Amplified ON ON ON Off X ON ON Off Off Off

502B X X X X X X X X X X

Switch Bank S101


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Model Z100 Z103

32 Full Range FUL N

32 Bi-Amplified FUL N

8 Full Range FUL N


402 Full Range FUL N


502A Full Range FUL N

502A Bi-Amplified FUL N

802 Full Range FUL 802

802 Bi-Amplified FUL 802

502B SUB X

Table 2802 Response Jumper Positions vs Model


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Fig. 3.2 Equalization Response for Model 25, 32, Bi-Amplified

Fig. 3.1 Equalization Response for Model 25, 32, Full Range

3 Instal lationThe internal jumpers and switchesof the P.I.P.-BEQ must be set priorto installation. See the previoussection for a description of each

jumper.

The graphs in Figures 3.1 through3.11 show the typical frequencyresponse for all valid switch com-binations.

20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

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-5

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dB

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Frequency (Hz)

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20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15

Fig. 3.3 Equalization Response for Model 502A, Full Range

Fig. 3.5 Equalization Response for Model 802, Full Range

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5

0

-5

-10

-15

-20

dB

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Frequency (Hz)

100000

10

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Fig. 3.4 Equalization Response for Model 502A, Bi-Amplified

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-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

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Fig. 3.6 Equalization Response for Model 802, Bi-Amplified

20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15


20

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0

-5

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-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

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Frequency (Hz)

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20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15


20

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0

-5

-10

-15

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dB

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Frequency (Hz)

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0

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Fig. 3.11 Equalization Response for Model 502B


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20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15

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0

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dB

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Frequency (Hz)

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3.1 BiampingThose who are not familiar with Boseproducts may need to understandthat Bose handles the biamping of itsloudspeaker products in a differentmanner than the traditional industrypractice. Standard industry practice

is to split the audio bandwidth into twodiscrete sections divided by 2nd-order (12-dB/octave) or steeper filters

(see Figure 3.12).

20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15

The way Bose uses the biamp desig-

nation does not limit the bandwidth

passing to the upper (high pass) sec-

tion; however, it does lower the level

of bass equalization employed (see

Figures 3.13 and 3.14). The additional

bass energy required is then derived

from the 502B subwoofer( see Fig-ures 3.25 and 3.16).

Fig. 3.12 Traditional Industry Practice for Biamping

20

5

0

-5

-10

-15

-20

dB

10 100 1000 10000

Frequency (Hz)

100000

10

15

Fig. 3.13 Typical Bose Full-Range Response

Fig. 3.14 Typical BoseBiamplified Response

Fig. 3.15 Bose 502BSubwoofer Response

Fig. 3.16 Typical BoseResponse Using 502B for Bass

Supplement


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Next, insert the edge connector ofthe P.I.P.BEQinto the PIP2inputadapter (see Figure 3.19) and in-

A

B

B

A

18 PIN (B)

20 PIN (A)

Q43528-1

FROMAMPLIFIER

P.I.P.

MODULE

BACKPANEL

OFPIP2

AMPLIFIER

PIP2CONNECTOR

BOARD

Fig. 3.18 PIP2 Input Adapter

Connection

Fig. 3.19 Installation into aPIP2 Amplifier

3.2 Instal lat ion ProceduresYou may need a phillips screwdriverto remove the existing P.I.P. module

or panel from your amplifier.

CAUTION: Before connecting thisor any P.I.P. to your amplifier, it isimportant to turn its level controls

down, turn it off and remove the AC

power. Dont touch the circuitry.Even though the amplifier is off,

there could still be enough energy

remaining to cause electric shock.

1. Turn down the level controls (fullcounterclockwise), turn off theamplifier and unplug it from theAC power source.

2. Remove the existing P.I.P. mod-

ule or panel (two screws). ForPIP2 amplifiers, this may involvedisconnecting the P.I.P. from aPIP2 input adapter (see Figures3.18 and 3.19). If a PIP2 inputadapter is already present, do notremove the ribbon cables fromthe adapter. Otherwise you willhave to reconnect them in thenext step.

3. Standard P.I.P. Amplifiers: Alignthe edges of the P.I.P.BEQin theP.I.P. card rails and firmly push

P.I.P.

MODU

LE

BACKPANEL

OFAMPLIFIER

the unit in until it is seated againstthe mounting bracket (see Figure3.17).

PIP2 Amplifiers:(Requires a PIP2input adaptor. Crown part num-ber Q43528-1.) Connect the PIP2input adapter to the two inputcables of the amplifier (see Figure3.18). Notice that the PIP2 inputadapter should be positionedwith the P.I.P. edge connector ontop and facing away from the am-plifier. The 20 pin cable (A) is con-nected first then the 18 pin cable(B) is connected. Both ribboncables should extend below thePIP2input adapter.

Fig. 3.17 Installation into aStandard P.I.P. Amplifier


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sert the assembly into the P.I.P.

opening in the back of the ampli-

fier.

4. Tighten the two P.I.P. mounting

thumbscrews.

5. Connect input and output wiring.

6. Plug in the amplifier and turn it on.

Adjust its level controls to a de-

sired setting. (In Dual mode, thelevel controls can now be used to

balance the low and high fre-

quencies.)

Do not tamper with the circuitry.Circuit changes made by unautho-rized personnel, or unauthorizedcircuit modifications are not al-lowed.

Remember: Crown is not liable forany damage resulting from over-

Fig. 3.20 Audio Wiring

+ +

BALANCED

SOURCE

UNBALANCED

SOURCE

driving other components in yoursound system.

Figure 3.20 shows how to wire abalanced and unbalanced sourceor daisy-chain output to the barrierblock connectors.

Important: If the amplifier is usedin either Bridged-Mono or Parallel-

Mono mode, you must turn the Ch.2 amplifier level control off (fullycounterclockwise). The input andlevel control of Ch. 2 are not de-feated in mono mode so any signalapplied to Ch. 2 will beat againstthe signal in Ch. 1.

Refer to the amplifier ReferenceManualfor more information aboutBridged-Mono or Parallel-Monomodes of operation.


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4 SpecificationsNote: All specifications are refer-enced to a 0.775-V input signal.

Signal to Noise: Greater than 90dB from 20 Hz to 20 kHz in Bypassmode. Greater than 85 dB in EQmode.

Frequency Response: 0.1 dBfrom 20 Hz to 20 kHz in Bypassmode. 2 dB from the responsecurves in Figure 3.1 through 3.6 inEQ mode.

Harmonic Distortion (THD): Lessthan 0.05% THD from 20 Hz to 20kHz in Bypass mode with a 0 dBuinput signal. Less than 0.1% THD

from 20 Hz to 20 kHz in EQmodeat 0 dBu.

Common Mode Rejection: Betterthan 60 dB up to 1 kHz.

Crosstalk: Less than 60 dB from20 Hz to 20 kHz.

Connectors: Solderless barrierblock or XLR connectors (depend-ing on model) for both input anddaisy chain output.

Input Impedance: Nominally 50kohms balanced; 25 kohms unbal-anced.

Maximum Input Level:+20 dB.

Output Impedance: (daisy chainoutput) Nominally 75 ohms bal-anced.

Maximum Output Level: (daisychain output) +20 dB into a 600-ohm load.

Nominal Gain:6 dBV at 1 kHz

Dimensions: 6 38 x 178 x 378 in.(16.2 x 4.8 x 9.8 cm).

Notes:1. All resistor values are in ohms, W, 5% unless otherwise specified.

2. All capacitor values are in microfarads unless otherwise specified.

3. P1 pins 6, 8, 9, 10, 12-22 are not used.


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For Technical Support contact:

Crown Audio Division Technical Support Group

Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart, Ind iana 46517 U.S.A.Phone: 800-342-6939 (North America, Puerto Rico and Virgin Islands) or 219-294-8200Fax: 219-294-8301 Fax Back (North America only): 800-294-4094 or 219-293-9200

Fax Back (International): 219-294-8100

Internet: http://www.crownintl.com

27901 cro pip beq manual

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