Guitar Amp Output Transformer Replacements

Author: kevinm   Date Posted:14 August 2017 

This is a list of output transformers designe by Hammond and ranged by Evatco. We find these to be great quality and value

  • 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)

Click part number for details (e.g., CAD files, assembly instructions)

 
Hammond Primary Secondary Amp Power Plastic Bobbin or Amplifier Equivalent To
Part Number (Ohms) (Ohms) Typ (Watts) Paper Wound Coil? Model Names Manufacturer Part No.
1750A 22800 8 Single Ended 3.5 Bobbin Reverb Driver 125A20B & 022921
1750AX 7500 8 Single Ended 3.5 Bobbin 6G15 Reverb 125A12A, 47605
1750B 5482 8 Single Ended 10 Paper Reverb Driver - Vibro King 24038
1750C 5,000/8,000 3.2 Single Ended 5 Bobbin (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) 125A35A & 022905
1760C 5,000/8,000 UPGRADE 3.2, 8, 16 Single Ended 5 Bobbin (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) 125A35A & 022905
1750E 8,500 C.T. 8 Push-Pull 15 Bobbin (Harvard 5F10) (Princeton Brown, AA964, Blackface, Silverface) (Princeton Reverb AA1164, AA764, B1270, Blackface, Silverface) 125A10B & 022913
1760E 8,500 C.T. UPGRADE 4, 8, 16 Push-Pull 15 Bobbin (Harvard 5F10) (Princeton Brown, AA964, Blackface, Silverface) (Princeton Reverb AA1164, AA764, B1270, Blackface, Silverface) 125A10B & 022913
1750F 6,950 C.T. 8 Push-Pull 15 Paper Blues Junior 49969
1760F 6,950 C.T. UPGRADE 4, 8, 16 Push-Pull 15 Paper Blues Junior 49969
1750H 6,600 C.T. 8 Push-Pull 20 Paper Deluxe, Deluxe Reverb 125A1A & 022640
1760H 6,600 C.T. UPGRADE 4, 8, 16 Push-Pull 20 Paper Deluxe, Deluxe Reverb 125A1A & 022640
1750J 4,000 C.T. 4 Push-Pull 40 Bobbin Pro-Reverb, Tremolux, Vibrolux, Vibroverb 125A6A, 125A7A & 022848
1760J 4,000 C.T. UPGRADE 4, 8, 16 Push-Pull 40 Bobbin Pro-Reverb, Tremolux, Vibrolux, Vibroverb 125A6A, 125A7A & 022848
1750JA 4,250 C.T. 4, 8 Push-Pull 40 Paper Hot Rod Deluxe 50438
1760JB 6,000 C.T. 2.67, 4, 8 Push-Pull 40 Bobbin Bandmaster Tweed, Pro Tweed, Super Brownface, Super Tweed 045216, 1846, 1848
1750K 4,000 C.T. 2 Push-Pull 50 Paper Tweed Bassman, Super Reverb 125A9A & 022855
1760K 4,000 C.T. UPGRADE 2, 4, 8 Push-Pull 50 Paper Tweed Bassman, Super Reverb 125A9A & 022855
1750KA 4,150 C.T. 2 Push-Pull 50 Paper 59 Bassman 36485
1750M 4,200 C.T. 2, 4, 8 Push-Pull 60 Paper General Replacement 125A13A & 022871
1750L 4,200 C.T. 4 Push-Pull 60 Paper Bassman, Hot Rod Deville 125A13A & 022871
1760L 4,200 C.T. 4, 8, 16 Push-Pull 60 Paper Bassman, Hot Rod Deville 125A13A & 022871, 048832
1750W 2,000 C.T. 4 Push-Pull 100 Paper Dual Showman, Twin Reverb, Super Six 125A29A & 022889
1760W 2,000 C.T. UPGRADE 4, 8, 16 Push-Pull 100 Paper Dual Showman, Twin Reverb, Super Six 125A29A & 022889
1750D 2,350 C.T. 4, 8, 16 Push-Pull 100 Paper Tone Master 26478
1750WR 2,000 C.T 4, 8 Push-Pull 135 Paper Bassman 135, Twin Reverb, Vibrosonic Reverb 13691

Marshall (Output Transformers)

Click part number for details (e.g., CAD files, assembly instructions)

 
Hammond Primary Secondary Amp Power Plastic Bobbin or Amplifier Equivalent To
Part No. (Ohms) (Ohms) Typ (Watts) Paper Wound Coil? Model Names Manufacturer Part No.
1750FA 7,000 C.T. 8, 16 Push-Pull 15 Bobbin DSL15H DSL-15 OPT
1750PA 8,400 C.T. 4, 8, 16 Push-Pull 18 Paper 18 Watt Combo -
1750NA 6,000 C.T. 8, 16 Push-Pull 30 Bobbin JTM30 -
1750N 3,200 C.T. 4, 8, 16 Push-Pull 50 Bobbin JMP, JCM 800 -
1750P 126, 500, 2,000 2, 4, 8, 16 Push-Pull 50 Bobbin JCM 900 -
1750Q 7,371 C.T. 4, 8, 16 Push-Pull 50 Bobbin JTM 45 -
1750U 1,700 C.T. 4, 8, 16 Push-Pull 100 Bobbin JMP, JCM 800 -
1750X 126, 500, 2,000 2, 4, 8, 16 Push-Pull 100 Bobbin JCM 900 -

VOX (Output Transformers)

Click part number for details (e.g., CAD files, assembly instructions)

 
Hammond Primary Secondary Amp Power Plastic Bobbin or Amplifier Equivalent To
Part Number (Ohms) (Ohms) Typ (Watts) Paper Wound Coil? Model Names Manufacturer Part No.
1750Y 6,200 C.T. 8 Push-Pull 15 Bobbin AC15 -
1750V 4,000 C.T. 8, 16 Push-Pull 30 Paper AC30 Vintage -
1750T 4,000 C.T. 8, 16 Push-Pull 30 Bobbin AC30 Reissue -

Yorkville/Traynor (Output Transformers)

Click part number for details (e.g., CAD files, assembly instructions)

 
Hammond Primary Secondary Amp Power Plastic Bobbin or Amplifier Similar To
Part Number (Ohms) (Ohms) Typ (Watts) Paper Wound Coil? Model Names Manufacturer Part No.
1750Z 10,000 C.T. 8 Push-Pull 20 Paper Bass Mate YBA-2 A1313
1750S 5,100 C.T. 8 Push-Pull 25 Paper Base Mate YBA-2B A1339
1750G 3,800 C.T. 4, 8, 16 Push-Pull 50 Paper General Replacement A-1312
1750R 2,000 C.T. 4, 8, 16 Push-Pull 100 Paper Replaces 98694 A-1301
* 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.