hammond mfg. co. ltd., electronics divisionnote: all leads 10.0" out min. label blu/yel primary...

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Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com Dimensions A 4.050” ±0.063 D 3.500” ±0.063 G 0.187” X 0.300” B 3.715” ±0.125 E 2.500” ±0.063 ±0.015 C 3.500” ±0.063 F 3.020” ±0.063 Designed for drop in replacement of original units. Includes 20% linear taps for maximum versatility Constructed to look similar to original factory units (where possible). Material used & design specifications were kept as close as possible to the original part to preserve the stock "tone". Open style with minimum 10" long primary and secondary leads Frequency response 40Hz - 15KHz (0/-1.0dB reference @ 1KHz) Distortion is less than 1% @ 40Hz Typical application Fender 013691 for Bassman 135, Twin Reverb, Vibrosonic Reverb Measurement instruments: D scope series iii audio analyzer Keithley 2010 DVM Wayne Kerr 3255B with a 3265B Hp4192a impedance analyzer * All graphs input level 27dBu @1.0KHz reference. **The results are typical and are subject to normal manufacturing and electrical tolerances. 2.28mH Brown-Blue TYPICAL TEST CIRCUIT Dielectric Strength Temperature Range TEST CONDITIONS 2000VRMS -40 to 105 degC 0.220 Ohm 0.156 Ohm 1750WR TUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER 4 & 8 Ohms 135 W Output Impedance Output Power ELECTRICAL SPECIFICATIONS Characteristics Typical Input Impedance 2000 Ohms Leakage Inductance @ 1.0 kHz, 1.0 V SC 65.70 Ohms Primary Brown-Red Secondary Black-Green Secondary Black-Grn/Yel Primary Red-Blue 66.30 Ohms @ 1.0 kHz, 1.0 V OC Primary Brown-Blue Inductance Impedance 12.64H 76.18KOhm DCR PRIMARY SECONDARY R L RS / 2 RS / 2 OUT BLK BLU RED BRN/YEL BRN GRN/YEL GRN NOTE: ALL LEADS 10.0" OUT MIN. LABEL BLU/YEL PRIMARY SECONDARY GRN/YEL BLUE 40Hz - 15kHz RED BROWN 2000 Ohm CT BRN/YEL BLK 135W BLU/YEL GRN 4 Ohm COM 8 Ohm 20% Linear Taps 1750WR 135W 40Hz - 15kHz BRN - RED - BLU: 2000 CT BRN/YEL - RED = RED - BLU/YEL ULTRA LINEAR TAPS DATE CODE MADE IN CANADA SECONDARY BLK - GRN/YEL: 4 BLK - GRN: 8 PRIMARY www.hammondmfg.com

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Page 1: Hammond Mfg. Co. Ltd., Electronics DivisionNOTE: ALL LEADS 10.0" OUT MIN. LABEL BLU/YEL PRIMARY SECONDARY GRN/YEL BLUE 40Hz - 15kHz RED BROWN 2000 Ohm CT BRN/YEL BLK 135W BLU/YEL GRN

Hammond Mfg. Co. Ltd., Electronics Division

www.hammondmfg.com

DimensionsA 4.050” ±0.063 D 3.500” ±0.063 G 0.187” X 0.300”B 3.715” ±0.125 E 2.500” ±0.063 ±0.015C 3.500” ±0.063 F 3.020” ±0.063

• Designed for drop in replacement of original units.• Includes 20% linear taps for maximum versatility• Constructed to look similar to original factory units (where possible).• Material used & design specifications were kept as close as possible to the original part to preserve the stock "tone".• Open style with minimum 10" long primary and secondary leads• Frequency response 40Hz - 15KHz (0/-1.0dB reference @ 1KHz)• Distortion is less than 1% @ 40Hz• Typical application Fender 013691 for Bassman 135, Twin Reverb, Vibrosonic Reverb

Measurement instruments:D scope series iii audio analyzer Keithley 2010 DVMWayne Kerr 3255B with a 3265B Hp4192a impedance analyzer

* All graphs input level 27dBu @1.0KHz reference.**The results are typical and are subject to normal manufacturing and electrical tolerances.

2.28mHBrown-Blue

TYPICAL TEST CIRCUIT

Dielectric StrengthTemperature Range

TEST CONDITIONS

2000VRMS-40 to 105 degC

0.220 Ohm0.156 Ohm

1750WRTUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER

4 & 8 Ohms135 W

Output ImpedanceOutput Power

ELECTRICAL SPECIFICATIONSCharacteristics Typical

Input Impedance 2000 Ohms

Leakage Inductance @ 1.0 kHz, 1.0 V SC

65.70 OhmsPrimary Brown-Red

Secondary Black-GreenSecondary Black-Grn/Yel

Primary Red-Blue 66.30 Ohms

@ 1.0 kHz, 1.0 V OCPrimary Brown-Blue

Inductance Impedance12.64H 76.18KOhm

DCR

PRIMARY SECONDARY

RL

RS/2

RS/2

OUT

BLK

BLU

RED

BRN/YEL

BRN

GRN/YEL

GRN

NOTE: ALL LEADS 10.0" OUT MIN.

LABEL

BLU/YEL

PRIMARY SECONDARY

GRN/YEL

BLUE

40Hz - 15kHz

RED

BROWN

2000 Ohm CT

BRN/YEL

BLK

135W

BLU/YEL

GRN

4 Ohm

COM

8 Ohm

20% Linear Taps

1750WR

135W 40Hz - 15kHz

BRN - RED - BLU: 2000 CTBRN/YEL - RED = RED - BLU/YEL ULTRA LINEAR TAPS

DATE CODE MADE IN CANADA

SECONDARYBLK - GRN/YEL: 4BLK - GRN: 8

PRIMARY

www.hammondmfg.com

Page 2: Hammond Mfg. Co. Ltd., Electronics DivisionNOTE: ALL LEADS 10.0" OUT MIN. LABEL BLU/YEL PRIMARY SECONDARY GRN/YEL BLUE 40Hz - 15kHz RED BROWN 2000 Ohm CT BRN/YEL BLK 135W BLU/YEL GRN

This drawing and the information in it is the property of Hammond Manufacturing. It may not be reproduced, transmitted or used in any manner whatsoever without the writtenpermission of Hammond Manufacturing. Data subject to change without notice.

www.hammondmfg.com