Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
1750N
PRIMARY
TUBE GUITAR AMPLIFIER - OUTPUT TRANSFORMER
•
•
•
•
•
•
SECONDARY
BLK
COM
BLU
Designed for drop in replacement of original
3200
Ohm
units such as Marshall1 JMP, JCM 800(P-TM050)
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
CT
YEL
4 Ohm
WHT
ORG
8 Ohm
RED
VIO
16 Ohm
50Hz-12kHz
50 W
B
ELECTRICAL SPECIFICATIONS
Characteristics
Input Impedance
Output Impedance
Output Power
Typical
3200 Ohms
4, 8 & 16 Ohms
50 W
DCR
Primary Blue-White
Primary White-Red
Secondary Black-Yellow
N
50 kH z C T
17 0Hz - 1: 53200
7
S - RE DL : 4
6
TT
W A H T YE : 1 A
5 0 - W O M , , VI O N A D
U : C CA
L
B LK : 8 I N
B RG E
O AD
M
VIO
ORG
DA
TE
Y EL
C
BLK
41.74 Ohms
43.14 Ohms
0.770 Ohm
BLU
E
D
Inductance Impedance
Primary Blue-Red
@ 1.0 kHz, 1.0 V OC
18.3H
112K Ohm
Leakage Inductance
Primary Blue-Red
@ 1.0 kHz, 1.0 V SC
13.41 mH
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
1
RED
NOTE: ALL LEADS 11" OUT MIN., STRIPPED .5"
Dimensions
A 3.125” ±0.063
B 3.350” Max
C
D
3.800” Max
2.500” ±0.063
E
G
2.450” ±0.063
0.188X0.406 ” ±0.015
TYPICAL TEST CIRCUIT
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.
WHT
G
PRIMARY
Keithley 2010 DVM
Hp4192a impedance analyzer
A
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
