Hammond 291BX 120V 660Vct Generic Amp Power Transformer
Ships from and sold by A5 IT
Exclusive pricing and Net-30 terms. Sign in or create a free account.
Create Free Business AccountKey Features
- 120V @ 60 Hz primary
- 660Vct @ 138 mA high voltage secondary
- 50V bias winding
- 6.3V @ 3A and 5V @ 3A secondaries
- Drawing dimensions include 4.063" ± 0.125 and 3.375" ± 0.063
- 5.32 lbs (2.41 kg); RoHS and REACH compliant
The 291BX 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 suits technicians who need a power transformer with these ratings for a tube guitar amplifier.
Secondary 1 is 660Vct @ 138 mA, Secondary 2 is a 50V bias winding, Secondary 3 is 6.3V @ 3A and Secondary 4 is 5V @ 3A. The short description reads 325-0-325,5V@3A, 6.3VCT@3A.
The part drawing lists the following dimensions (labels not included in the extracted text): 2.813" ± 0.063, 4.063" ± 0.125, 3.375" ± 0.063, 2.048" ± 0.063, 2.250" ± 0.063 and 2.813" ± 0.063. Refer to the drawing to match these to your chassis layout.
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 5.32 lbs (2.41 kg). The 291BX is RoHS and REACH compliant, UPC 623980252346, UNSPSC 39121301. A 240V @ 50/60 Hz version is listed as the 291BEX.
Ideal For
- Generic 120V tube guitar amp power transformer replacement
- Tube amp repair
- Amp builds needing 660Vct with bias winding
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers, Replacement & Upgrades) |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 325-0-325,5V@3A, 6.3VCT@3A |
Dimensions
| Drawing Dimensions (Unlabelled, As Listed) | 2.813" ± 0.063; 4.063" ± 0.125; 3.375" ± 0.063; 2.048" ± 0.063; 2.250" ± 0.063; 2.813" ± 0.063 |
Electrical
| Secondary 1 | 660Vct @ 138 mA |
| Secondary 2 | 50V Bias |
| Secondary 3 | 6.3V @ 3A |
| Secondary 4 | 5V @ 3A |
| Primary Volts | 120V @ 60 Hz |
Identifiers
| UPC | 623980252346 |
| UNSPSC | 39121301 |
Amplifier Reference
| Amp Manufacturer | Fender |
| Amp Model (Ref. Only) | GENERIC |
Packaging & Shipping
| Shipping Weight | 5.32 lbs (2.41 kg) |
Construction & Finish
| 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 |
Purchasing this for your business?
Business account holders get access to exclusive pricing, volume discounts, and dedicated support. Create a free account to get started.
Frequently Asked Questions
What amp is the 291BX for?▾
The amp model is listed as GENERIC; it is described as a replacement power transformer for Fender guitar amps.
What is the 291BX primary?▾
120V @ 60 Hz.
What are the secondary ratings?▾
660Vct @ 138 mA, 50V bias, 6.3V @ 3A and 5V @ 3A.
What dimensions are on the drawing?▾
2.813" ± 0.063, 4.063" ± 0.125, 3.375" ± 0.063, 2.048" ± 0.063, 2.250" ± 0.063 and 2.813" ± 0.063; the extracted text does not label which is which.
Is there a 240V version?▾
Yes, the 291BEX.
Related Products
Save 52%101D — Audio transformer, potted, primary impedance 300 CT, secondary impedance 600 CT
Hammond Manufacturing · 101D
Save 52%101F — Audio transformer, potted, primary impedance 600 CT, secondary impedance 600 CT
Hammond Manufacturing · 101F
Save 52%101H — Audio transformer, potted, primary impedance 1200 CT, secondary impedance 600 CT
Hammond Manufacturing · 101H
Save 52%101J — Audio transformer, potted, primary impedance 2500 CT, secondary impedance 600 CT
Hammond Manufacturing · 101J
Save 52%101P — Audio transformer, potted, primary impedance 300 CT, secondary impedance 50 CT
Hammond Manufacturing · 101P