Product Description
MADE IN CANADA
Replacement for Blackface*, Silverface*, AA764, AB764 Tweed*, 5C1, 5E1, 5F1, Vibro Blackface*
Equivalent to manufacturer part number #125A35A, #022905, #125A3A
Specifications:
| Primary: | 5,000Ω / 8,000Ω |
| Secondary: | 3.2Ω |
| Power: | 5 W |
| Amp Type: | Single Ended |
| Coil Type: | Bobbin |
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".
Warning: Not all amplifier models of the same name use the same transformer model. Please make sure the amplifier transformer which you are replacing has a Fender number matching the equivalent Fender transformer number listed here.
WARNING: HANDLING ELECTRONIC COMPONENTS CAN BE HARMFUL OR FATAL. PLEASE FOLLOW ADEQUATE SAFETY PROCEDURES.
*Please Note: Hammond products are subject to change without notice. The product you receive may vary slightly from the product pictured, including the associated specifications.
Product Videos
Product Reviews
4 Reviews Hide Reviews Show Reviews
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Hammond 1750C output transformer.
I've had no issues with the Hammond 1750C output transformer. I recently completed a customer build using this and they're extremely happy with the amp's tone.
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Not for push-pull!
Nexgen's product description states this transformer is compatible with some push-pull amps such as brown or blackface Princeton or Princeton reverb. This is not the case. This OT only works with single ended amps such as Champs, Harvard 6g10 or tweed Princetons. Push-pull Princeton requires1750E
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Good for Champ/ 5F1 amps
The Hammond 1750C is a good OT for Champ/ 5F1-type amps and fits the holes on the 5F1 chassis sold by Amplified Parts/ Mojotone. Although the secondary is rated at 3.2 ohms, you can connect the conventional 4-ohm 8-in. speaker -- such as the Eminence 820H, sold by NextGen. Like the previous reviewer, I've had cases of the 1750C causing squeal in amps with negative feedback. Reversing the green and black secondaries on the speaker jack (black to tip; green to sleeve, opposite to the data sheet) cures the problem. However, the squeal did not occur on my latest build, so perhaps Hammond has gotten on top of the problem. NextGen service is universally prompt and helpful.
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Direct drop in replacement for SF Champ...almost!
Got a very quick turnaround with Nextgen. Great service. Transformer was pretty much a drop in.... hole sizes, wire colours. I hooked it up red to red, blue to blue etc. Turned it on and got a high pitched squeal (oscillation). It seems that the primary wires are reversed. I switched them around and it now works perfectly!
