1750A

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1750A PRIMARY BLU 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 6" long primary and secondary leads Frequency response 70Hz - 15KHz (0/-1dB reference @ 1KHz) Distortion is less than 1.5% @ 70Hz SECONDARY BLK 25000 Ohms 8 Ohms RED BLK GRN 17 MA DE ELECTRICAL SPECIFICATIONS Characteristics Input Impedance Output Impedance Output Power Typical 25000 Ohms 8 Ohms 3.5W DCR Primary Blue-Red Secondary Black-Green 1065 Ohms 0.966 Ohm Inductance Impedance Primary Blue-Red Secondary Black-Green @ 1.0 kHz, 1.0 V SC 1.54H Dielectric Strength Temperature Range 1500VRMS -40 to 105 degC TEST CONDITIONS Measurement instruments: D scope series iii audio analyzer Wayne Kerr 3255B with a 3265B Keithley 2010 DVM Hp4192a impedance analyzer 50 IN A CA NA DA DA TE C RED B BLU A @ 1.0 kHz, 1.0 V OC 31.0H 190KOhm 39.09mH 157.05 Ohm Leakage Inductance Blue-Red GRN 70Hz - 15kHz 3.5W D G NOTE: ALL LEADS 6" OUT MIN. Dimensions A 2.000” ±0.063 B 1.440” ±0.125 C 1.745” ±0.063 D G 1.719” ±0.063 0.187” ±0.015 TYPICAL TEST CIRCUIT PRIMARY 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