Hammond 291CX 120V 650Vct 207mA Generic Amp Power Transformer
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Create Free Business AccountKey Features
- 120V @ 60 Hz primary
- 650Vct @ 207 mA high voltage secondary
- 50V bias winding
- 6.3Vct @ 4A and 5V @ 3A secondaries
- Bobbin winding; generic Fender-replacement design
- 6.8 lbs (3.08 kg); RoHS and REACH compliant
The 291CX is a 290 Series power transformer described as a replacement for Fender guitar amps, with the amp model listed as GENERIC. It has a 120V @ 60 Hz primary and is aimed at technicians and builders who need a tube amp power transformer with these specific ratings.
The high voltage secondary is 650Vct @ 207 mA, with a 50V bias winding, a 6.3Vct @ 4A winding and a 5V @ 3A winding. The short description reads 325-0-325, 6.3VCT@4A. The series ordering table lists a bobbin winding.
The part drawing gives the dimensions 3.125" ± 0.063, 4.063" ± 0.125, 3.750" ± 0.063, 1.975" ± 0.063, 2.500" ± 0.063 and 3.125" ± 0.063; the extracted text does not identify which measurement each value refers to.
Like every 290 Series part, it was designed for drop in replacement of the original unit, physically designed to look similar to the original factory unit where possible, and built with materials and design specs kept as close as possible to the original part to preserve the stock tone.
Shipping weight is 6.8 lbs (3.08 kg). The 291CX is RoHS and REACH compliant, with UPC 623980252353 and UNSPSC 39121301. A 240V @ 50/60 Hz version is listed as the 291CEX.
Ideal For
- Generic 120V tube guitar amp power transformer replacement
- Tube amp repair
- Amp builds needing 650Vct at 207 mA
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers, Replacement & Upgrades) |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 325-0-325, 6.3VCT@4A |
Dimensions
| Drawing Dimensions (Unlabelled, As Listed) | 3.125" ± 0.063; 4.063" ± 0.125; 3.750" ± 0.063; 1.975" ± 0.063; 2.500" ± 0.063; 3.125" ± 0.063 |
Electrical
| Secondary 1 | 650Vct @ 207 mA |
| Secondary 2 | 50V Bias |
| Secondary 3 | 6.3Vct @ 4A |
| Secondary 4 | 5V @ 3A |
| Primary Volts | 120V @ 60 Hz |
Identifiers
| UPC | 623980252353 |
| UNSPSC | 39121301 |
Amplifier Reference
| Amp Manufacturer | Fender |
| Amp Model (Ref. Only) | GENERIC |
Packaging & Shipping
| Shipping Weight | 6.8 lbs (3.08 kg) |
Construction & Finish
| Winding | Bobbin |
| Appearance | Designed to look similar to original factory units (where possible) |
| Design Intent | Designed for drop in replacement of original units |
| Materials & Design Specs | Kept as close as possible to the original part to preserve the stock "tone" |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What amp is the 291CX for?▾
The amp model is listed as GENERIC; it is described as a replacement power transformer for Fender guitar amps.
What is the primary rating?▾
120V @ 60 Hz.
What are the secondary ratings?▾
650Vct @ 207 mA, 50V bias, 6.3Vct @ 4A and 5V @ 3A.
What winding type does it use?▾
Bobbin.
Is there a 240V version?▾
Yes, the 291CEX.
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