1750M

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1750M PRIMARY TUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER • • • • • • Typical 4200 Ohms 2, 4 & 8 Ohms 50/60 W DCR Primary Brown-Blue Secondary Black-White Secondary Black-Grn/Yel Secondary Black-Green BRN @ 1.0 kHz, 1.0 V OC 5.60 H 35.6 KOhm 8.53 mH 88.34 Ohm 17.08 mH 154.20 Ohm 32.63 mH 275.10 Ohm Leakage Inductance Primary Brown-Blue @ 1.0 kHz, 1.0 V SC 8.03 mH Dielectric Strength Temperature Range 2000VRMS -40 to 105 degC z kH CT RN 8 15 G 0 M z - 200L 7 5 70HU: 4N/YE / WHT 1 W -BL GR / /60 ED 50 N-R WHT  2 BRLK - / B OM ADA C AN DE MA IN BLK COM B TE DA 4 C C BRN GRN RED D E BLU A G NOTE: ALL LEADS 9.0" OUT MIN. Dimensions A 4.050” ±0.063 B 3.220” ±0.125 C 3.500” ±0.063 D 3.500” ±0.063 E F G 2.000” ±0.063 2.510” ±0.063 0.187” X 0.300" ±0.015 TYPICAL TEST CIRCUIT PRIMARY Keithley 2010 DVM Hp4192a impedance analyzer 2 70Hz - 15kHz 50/60W TEST CONDITIONS Measurement instruments: D scope series iii audio analyzer Wayne Kerr 3255B with a 3265B WHT BLK F Inductance Impedance Primary Brown-Blue Secondary Black-White Secondary Black-Grn/Yel Secondary Black-Green 8 GRN/YEL 4  4200 CT GRN/YEL 68.0 Ohms 0.235 Ohm 0.302 Ohm 0.355 Ohm GRN RED ELECTRICAL SPECIFICATIONS Characteristics Input Impedance Output Impedance Output Power SECONDARY BLU 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 9" long primary and secondary leads Frequency response 70Hz - 15KHz (0/-1dB reference @ 1KHz) Distortion is less than 1% @ 70Hz 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. Release 2: 10.23.2020 www.hammondmfg.com