1750JA

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1750JA PRIMARY TUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER • • • • • • Designed for drop in replacement of original units. 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 11" long primary and secondary leads Frequency response 70Hz - 15KHz (0/-1dB reference @ 1KHz) Distortion is less than 1% @ 70Hz 4250 CT Ohm RED BLU Typical 4250 Ohms 4 & 8 Ohms 40 W DCR Primary Brown-Red Primary Red-Blue Secondary Black-Grn/Yel Secondary Black-Green 82.0 Ohms 108.3 Ohms 0.253 Ohm 0.462 Ohm Inductance Impedance Primary Brown-Blue Secondary Black-Grn/Yel Secondary Black-Green @ 1.0 kHz, 1.0 V OC 11.40 H 72.0 KOhm 28.86 mH 259.20 Ohm 55.60 mH 457.80 Ohm Leakage Inductance Primary Brown-Blue @ 1.0 kHz, 1.0 V SC 31.39 mH Dielectric Strength Temperature Range 2000VRMS -40 to 105 degC J A A Hz T 5 0 NAD 15k  C 1 7 IN CA Hz - 250  DE 70 U: 4 L: 4  MA S L E 8 TT - B / Y N: WA ED RN GR 40 N - R K - GLK L B R B B GRN/YEL 4 Ohm GRN 8 Ohm B TE DA BLK F E D GRN/YEL A GRN G BLU NOTE: ALL LEADS 11" MIN. OUT. RED BRN Dimensions A 2.500” ±0.063 B 3.150” ±0.125 C 3.256” ±0.063 D E F 2.000” ±0.063 2.150” ±0.063 2.650” ±0.063 G 0.188” X 0.375” ±0.015 TYPICAL TEST CIRCUIT PRIMARY Keithley 2010 DVM Hp4192a impedance analyzer COM C TEST CONDITIONS Measurement instruments: D scope series iii audio analyzer Wayne Kerr 3255B with a 3265B BLK 70Hz - 15kHz 40W ELECTRICAL SPECIFICATIONS Characteristics Input Impedance Output Impedance Output Power SECONDARY BRN R S/ SECONDARY 2 RL * All graphs input level 27dBu @1.0KHz reference. **The results are typical and are subject to normal manufacturing and electrical tolerances. R S/ OUT 2 www.hammondmfg.com 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 written permission of Hammond Manufacturing. Data subject to change without notice. www.hammondmfg.com