11/16/2017
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.
Gallery
Fender (Output Transformers)
Plastic
Bobbin
Secondary Amp Power
or
Paper
Wound
(Watts) Coil?
3.5
Bobbin
Equivalent
To
Manufacturer
Part No.
125A20B &
022921
Hammond
Part
Number
1750A
Primary
Amplifier
(Ohms)
22800
(Ohms)
8
Typ
Single
Ended
Model Names
Reverb Driver
https://www.hammfg.com/electronics/transformers/classic/1750
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11/16/2017
Tube Guitar Amplifier - Output Transformers (1750 Series) - Hammond Mfg.
Plastic
Bobbin
Equivalent
Amplifier
To
Manufacturer
Model Names
1964 Blackface 6G15 Reverb
Reverb Driver - Vibro King
(Bronco, AA764, AB764, Blackface, Silverface) (Champ, Tweed, 5C1, 5E1, 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, 5F1,
5
Bobbin
AA764, Blackface, Silverface, Vibro Blackface) (Harvard, 6G10) (Princeton Tweed,
5B2, 5C2, 5D2, 5E2, 5F2, 5F2A)
(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
Deluxe, Deluxe Reverb
Part No.
125A12A,
47605
24038
125A35A &
022905
125A35A &
022905
125A10B &
022913
125A10B &
022913
49969
49969
125A1A &
022640
125A1A &
022640
125A6A,
125A7A &
022848
125A6A,
40
Bobbin
Pro-Reverb, Tremolux, Vibrolux, Vibroverb
125A7A &
022848
40
40
50
50
50
60
60
Paper
Bobbin
Paper
Paper
Paper
Paper
Paper
Hot Rod Deluxe
Bandmaster Tweed, Pro Tweed, Super Brownface, Super Tweed
Tweed Bassman, Super Reverb
Tweed Bassman, Super Reverb
59 Bassman
General Replacement
Bassman, Hot Rod Deville
50438
045216, 1846,
1848
125A9A &
022855
125A9A &
022855
36485
125A13A &
022871
125A13A &
022871
125A13A &
60
Paper
Bassman, Hot Rod Deville
022871,
048832
125A29A &
022889
125A29A &
022889
26478
13691
Hammond
Part
Number
1750AX
1750B
Primary
Secondary Amp Power
or
Paper
Wound
(Ohms)
7500
5482
(Ohms)
8
8
Typ
Single
Ended
Single
Ended
Single
Ended
(Watts)
3.5
10
Coil?
Bobbin
Paper
1750C
5,000/8,000
3.2
5
Bobbin
1760C
5,000/8,000
UPGRADE Single
3.2, 8, 16 Ended
8
Push-
Pull
Pull
Push-
Pull
1750E
1760E
1750F
1760F
1750H
1760H
8,500 C.T.
8,500 C.T.
6,950 C.T.
6,950 C.T.
6,600 C.T.
6,600 C.T.
15
15
15
15
20
20
Bobbin
Bobbin
Paper
Paper
Paper
Paper
UPGRADE Push-
4, 8, 16
8
UPGRADE Push-
4, 8, 16
Pull
8
Push-
Pull
Pull
Push-
Pull
UPGRADE Push-
4, 8, 16
4
1750J
4,000 C.T.
40
Bobbin
Pro-Reverb, Tremolux, Vibrolux, Vibroverb
1760J
4,000 C.T.
UPGRADE Push-
4, 8, 16
4, 8
2.67, 4, 8
2
Pull
Push-
Pull
Push-
Pull
Push-
Pull
Pull
Push-
Pull
Push-
Pull
Push-
Pull
Push-
Pull
Push-
Pull
Pull
Push-
Pull
Push-
Pull
1750JA
1760JB
1750K
1760K
1750KA
1750M
1750L
4,250 C.T.
6,000 C.T.
4,000 C.T.
4,000 C.T.
4,150 C.T.
4,200 C.T.
4,200 C.T.
UPGRADE Push-
2, 4, 8
2
2, 4, 8
4
1760L
4,200 C.T.
4, 8, 16
1750W
1760W
1750D
1750WR
2,000 C.T.
2,000 C.T.
2,350 C.T.
2,000 C.T
4
100
100
100
135
Paper
Paper
Paper
Paper
Dual Showman, Twin Reverb, Super Six
Dual Showman, Twin Reverb, Super Six
Tone Master
Bassman 135, Twin Reverb, Vibrosonic Reverb
UPGRADE Push-
4, 8, 16
4, 8, 16
4, 8
Marshall (Output Transformers)
https://www.hammfg.com/electronics/transformers/classic/1750
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11/16/2017
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
Tube Guitar Amplifier - Output Transformers (1750 Series) - Hammond Mfg.
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.
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 or Vox Amplification companies.
Amplifier model names (examples): Blues Junior, Bandmaster, Bandmaster Reverb, Bassman, Bassman 100, Bronco, Champ, Vibro-Champ, Deluxe, Deluxe Reverb,
Dual Showman, Princeton Reverb, Pro Reverb, Reverb Driver, Super Reverb, Tremolux, Tweed Bassman, Tweed Deluxe, Twin Reverb, Twin Super, Vibrolux & Vibrolux
Reverb are all trademarks of Fender Musical Instruments Corp.
Data subject to change without notice
© 2017. Hammond Manufacturing Ltd. All rights reserved.
https://www.hammfg.com/electronics/transformers/classic/1750
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