3/19/2018
Tube Guitar Amplifier - Output Transformers (1750 Series) - Hammond Mfg.
Quality Products. Service Excellence.
Tube Guitar Amplifier - Output Transformers
1750 Series
REPLACEMENT & UPGRADES
Features
Designed for drop in replacement of original units.
Physically, parts were designed to look similar to original factory units (where possible).
Material used & design specs. were kept as close as possible to the original part to
preserve the stock "tone".
Output transformers marked UPGRADE (below) allow for more versatility by added
secondary connections that did not exist on the original units.
Fender (Output Transformers)
Plastic
Bobbin
Secondary Amp Power
or
Paper
Wound
(Watts) Coil?
3.5
3.5
10
Bobbin
Bobbin
Paper
Hammond
Part
Number
1750A
1750AX
1750B
Primary
Amplifier
Equivalent To
(Ohms)
22800
7500
5482
(Ohms)
8
8
8
Typ
Single
Ended
Single
Ended
Single
Ended
Single
Ended
Model Names
Reverb Driver
1964 Blackface 6G15 Reverb
Reverb Driver - Vibro King
Manufacturer Part No.
125A20B & 022921
125A12A, 47605
24038
1750C
5,000/8,000
3.2
5
(Bronco, AA764, AB764, Blackface, Silverface) (Champ, Tweed, 5C1, 5E1,
Bobbin
5F1, AA764, Blackface, Silverface, Vibro Blackface) (Harvard, 6G10)
(Princeton Tweed, 5B2, 5C2, 5D2, 5E2, 5F2, 5F2A)
(Bronco, AA764, AB764, Blackface, Silverface) (Champ, Tweed, 5C1, 5E1,
Bobbin
5F1, AA764, Blackface, Silverface, Vibro Blackface) (Harvard, 6G10)
(Princeton Tweed, 5B2, 5C2, 5D2, 5E2, 5F2, 5F2A)
Bobbin
Bobbin
Paper
Paper
Paper
(Harvard 5F10) (Princeton Brown, AA964, Blackface, Silverface) (Princeton
Reverb AA1164, AA764, B1270, Blackface, Silverface)
(Harvard 5F10) (Princeton Brown, AA964, Blackface, Silverface) (Princeton
Reverb AA1164, AA764, B1270, Blackface, Silverface)
Blues Junior
Blues Junior
Deluxe, Deluxe Reverb
125A35A & 022905
1760C
UPGRADE Single
5,000/8,000
3.2, 8, 16 Ended
8,500 C.T.
8,500 C.T.
6,950 C.T.
6,950 C.T.
6,600 C.T.
8
Push-
Pull
5
125A35A & 022905
1750E
1760E
1750F
1760F
1750H
15
15
15
15
20
125A10B & 022913
125A10B & 022913
49969
49969
125A1A & 022640
UPGRADE Push-
4, 8, 16
Pull
8
Push-
Pull
UPGRADE Push-
4, 8, 16
Pull
8
Push-
Pull
https://www.hammfg.com/electronics/transformers/classic/1750
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3/19/2018
Tube Guitar Amplifier - Output Transformers (1750 Series) - Hammond Mfg.
Plastic
Bobbin
Hammond
Part
Number
1760H
1750J
1760J
1750JA
1760JB
1750K
1760K
1750KA
Primary
Secondary Amp Power
or
Paper
Wound
Amplifier
Equivalent To
(Ohms)
6,600 C.T.
4,000 C.T.
4,000 C.T.
4,250 C.T.
6,000 C.T.
4,000 C.T.
4,000 C.T.
4,150 C.T.
(Ohms)
4, 8, 16
4
Typ
Pull
Push-
Pull
(Watts) Coil?
20
40
40
40
40
50
50
50
Paper
Bobbin
Bobbin
Paper
Bobbin
Paper
Paper
Paper
Model Names
Deluxe, Deluxe Reverb
Pro-Reverb, Tremolux, Vibrolux, Vibroverb
Pro-Reverb, Tremolux, Vibrolux, Vibroverb
Hot Rod Deluxe
Bandmaster Tweed, Pro Tweed, Super Brownface, Super Tweed
Tweed Bassman, Super Reverb
Tweed Bassman, Super Reverb
59 Bassman
Hot Rod DeVille, Hot Rod DeVille 212, Blues DeVille, Blues DeVille 212, 93
Manufacturer Part No.
125A1A & 022640
125A6A, 125A7A &
022848
125A6A, 125A7A &
022848
50438
045216, 1846, 1848
125A9A & 022855
125A9A & 022855
36485
125A13A & 18343,
41754, 22871, 45249,
22855, 125A9A, 36485
125A13A & 022871
125A13A & 022871,
048832
125A29A & 022889
125A29A & 022889
26478
-
13691
UPGRADE Push-
UPGRADE Push-
4, 8, 16
Pull
4, 8
2.67, 4, 8
2
Push-
Pull
Push-
Pull
Push-
Pull
UPGRADE Push-
2, 4, 8
Pull
2
Push-
Pull
Push-
Pull
Push-
Pull
Push-
Pull
Push-
Pull
1750M
4,200 C.T.
2, 4, 8
60
Paper
Concert, 93 Super, Super 60, Super 112, Super 210, Concert II, Super
Reverb
Bassman, Hot Rod Deville
Bassman, Hot Rod Deville
Dual Showman, Twin Reverb, Super Six
Dual Showman, Twin Reverb, Super Six
Tone Master
Dual Showman, Twin Reverb, Super Six
Bassman 135, Twin Reverb, Vibrosonic Reverb
1750L
1760L
1750W
1760W
1750D
1750WA
1750WR
4,200 C.T.
4,200 C.T.
2,000 C.T.
2,000 C.T.
2,350 C.T.
2,000 C.T.
2,000 C.T
4
4, 8, 16
4
60
60
100
100
100
100
135
Paper
Paper
Paper
Paper
Paper
Paper
Paper
UPGRADE Push-
4, 8, 16
Pull
4, 8, 16
2, 4, 8
4, 8
Push-
Pull
Push-
Pull
Push-
Pull
Marshall (Output Transformers)
Hammond
Part No.
1750FA
1750PA
1750NA
1750N
1750P
1750Q
1750U
1750X
Primary
(Ohms)
7,000 C.T.
8,400 C.T.
6,000 C.T.
3,200 C.T.
126, 500, 2,000
7,371 C.T.
1,700 C.T.
126, 500, 2,000
Secondary
(Ohms)
8, 16
4, 8, 16
8, 16
4, 8, 16
2, 4, 8, 16
4, 8, 16
4, 8, 16
2, 4, 8, 16
Amp
Typ
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Power
(Watts)
15
18
30
50
50
50
100
100
Plastic Bobbin or
Paper Wound Coil?
Bobbin
Paper
Bobbin
Bobbin
Bobbin
Bobbin
Bobbin
Bobbin
Amplifier
Model Names
DSL15H
18 Watt Combo
JTM30
JMP, JCM 800
JCM 900
JTM 45
JMP, JCM 800
JCM 900
-
-
-
-
-
-
-
Equivalent To
Manufacturer Part No.
DSL-15 OPT
VOX (Output Transformers)
Hammond
Part Number
1750Y
1750V
1750T
Primary
(Ohms)
6,200 C.T.
4,000 C.T.
4,000 C.T.
Secondary
(Ohms)
8
8, 16
8, 16
Amp
Typ
Push-Pull
Push-Pull
Push-Pull
Power
(Watts)
15
30
30
Plastic Bobbin or
Paper Wound Coil?
Bobbin
Paper
Bobbin
Amplifier
Model Names
AC15
AC30 Vintage
AC30 Reissue
-
-
-
Equivalent To
Manufacturer Part No.
https://www.hammfg.com/electronics/transformers/classic/1750
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3/19/2018
Tube Guitar Amplifier - Output Transformers (1750 Series) - Hammond Mfg.
Yorkville/Traynor (Output Transformers)
Hammond
Part Number
1750Z
1750S
1750G
1750R
79405
Primary
(Ohms)
10,000 C.T.
5,100 C.T.
3,800 C.T.
2,000 C.T.
1900 C.T.
Secondary
(Ohms)
8
8
4, 8, 16
4, 8, 16
8
Amp
Typ
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Power
(Watts)
20
25
50
100
120
Plastic Bobbin or
Paper Wound Coil?
Paper
Paper
Paper
Paper
Paper
Amplifier
Model Names
Bass Mate YBA-2
Base Mate YBA-2B
General Replacement
Replaces 98694
YBA-3
Similar To
Manufacturer Part No.
A1313
A1339
A1312
A1301
A1332
* 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.
Data subject to change without notice
© 2018. Hammond Manufacturing Ltd. All rights reserved.
https://www.hammfg.com/electronics/transformers/classic/1750
3/3
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