Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
1750H
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 9" long primary and
secondary leads
Frequency response 70Hz - 15KHz
(0/-1.0dB reference @ 1KHz)
Distortion is less than 1% @ 70Hz
SECONDARY
BLK COM
BLU
6600
Ohm
CT
RED
BRN
GRN 8 Ohm
20 WATTS
70Hz - 15kHz
BLK
ELECTRICAL SPECIFICATIONS
Characteristics
Input Impedance
Output Impedance
Output Power
DA
TE
Typical
6600 Ohms
8 Ohms
20W
C
GRN
BR 12
N 0
BL - R WAT
K ED T
MA - GR - B S 7
DE N: LU 0H
I N 8 Ω: 66 z - 1
CA
00 Ω 5k
H
NA
CT z
DA
17
50
H
B
DCR
Primary Brown-Blue
Secondary Black-Green
428.0 Ohms
0.410 Ohm
BLU
D
RED
Inductance Impedance
Primary Brown-Blue
Secondary Black-Green
@ 1.0 kHz, 1.0 V OC
21.4H
132.0 Kohm
27.36mH
680.1 Ohms
A
G
BRN
NOTE: ALL LEADS 9" LONG MIN.
Leakage Inductance
Primary Brown-Blue
@ 1.0 kHz, 1.0 V SC
13.54mH
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
Dimensions
A 3.7100” ±0.063
B 2.4000” ±0.125
C 2.308” ±0.063
3.130” ±0.063
0.187” ±0.015
TYPICAL TEST CIRCUIT
PRIMARY
Keithley 2010 DVM
Hp4192a impedance analyzer
D
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.
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
