1750Q

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1750Q PRIMARY TUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER SECONDARY ORG COM WHT • • • • • • Designed for drop in replacement of original 7371 Ohm units such as Marshall1 JTM 45 (P-TM450) 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 15" long primary and secondary leads Frequency response 70Hz - 15KHz (0/-1dB reference @ 1KHz) Distortion is less than 1% @ 70Hz CT YEL 4 Ohm BLK GRN 8 Ohm GRY 16 Ohm RED 70Hz-15kHz 50 W B ELECTRICAL SPECIFICATIONS Characteristics Input Impedance Output Impedance Output Power Typical 7371 Ohms 4, 8 & 16 Ohms 50 W Q z 50 5kH 170Hz - 1: 7371 CT Ω TE DA 7 ED 4 Ω Ω S R : TT K - EL : 16 WA L , Y Y DA 50 T - BCOM , GR ANA WH EL: : 8 ΩIN C Y RN E G AD M ORG Y EL GRN C DCR Primary White-Black Primary Black-Red Secondary Orange-Grey GRY 41.74 Ohms 43.14 Ohms 0.580 Ohm BLK E D Inductance Impedance Primary White-Red A @ 1.0 kHz, 1.0 V OC 38.0 H 250K Ohm WHT G RED NOTE: ALL LEADS 15" OUT MIN Leakage Inductance Primary White-Red @ 1.0 kHz, 1.0 V SC 19.87 mH Dielectric Strength Temperature Range 2500VRMS -40 to 105 degC TEST CONDITIONS Measurement instruments: D scope series iii audio analyzer Wayne Kerr 3255B with a 3265B Dimensions A 3.125” ±0.063 B 3.280” ±0.125 C D 3.750” ± 0.063 2.500” ±0.063 2.438” ±0.063 0.188X0.406 ” ±0.015 TYPICAL TEST CIRCUIT PRIMARY Keithley 2010 DVM Hp4192a impedance analyzer E G 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. 1 R S/ OUT 2 DISCLAIMER: Hammond Mfg. is not affiliated with Fender Musical Instruments Corp., Marshall Amplification, Yorkville/Traynor, AMPEG or VOX Amplification companies. Amplifier model names are trademarks of the amplifier companies and are just listed here for reference purpose only. 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