Hammond 290FX 120V 100W Twin Reverb/Showman Power Transformer
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Create Free Business AccountKey Features
- Similar amp P/Ns 125P34A, 022756 (reference only)
- 120V @ 60 Hz primary
- 640Vct @ 518 mA high-voltage secondary (335-0-335)
- 60V bias winding
- 6.5V @ 5.5A heater winding
- Paper-wound construction
- Listed for Twin Reverb, Showman, Bassman 100, Quad, Super Six Reverb 100, Vibrosonic
- 11.65 lbs (5.28 kg); RoHS and REACH compliant
The 290FX is a Hammond 290 Series power transformer listed as a replacement for Fender guitar amps built around the larger 640Vct transformer, including the Twin Reverb, Showman and Bassman 100 families. Similar amp part numbers given for reference are 125P34A and 022756.
It is rated for a 120V @ 60 Hz primary, with a 640Vct @ 518 mA high-voltage secondary (short description 335-0-335), a 60V bias winding and a 6.5V @ 5.5A heater winding. The ordering table lists paper winding.
Reference listings in the ordering table include the BASSMAN 100 (Silverface), QUAD WITH REVERB, SHOWMAN (Silverface, Blackface, AB763, AC568, AA763), SHOWMAN REVERB (AA768), SHOWMAN DUAL (AB763, AC568), SHOWMAN DUAL REVERB (100, AA769), SUPER SIX REVERB 100, TWIN REVERB (AA769, AA270, Silverface, AB763, Blackface, 100) and VIBROSONIC. These model and chassis references are for reference only.
Hammond designed the 290 Series for drop-in replacement of original units, with parts made to look similar to the original factory transformers where possible and materials and design specs kept as close as possible to the original part to preserve the stock tone.
The 290FX ships at 11.65 lbs (5.28 kg). It is RoHS and REACH compliant and identified by UPC 623980094090 and UNSPSC 39121301. The 240V @ 50/60 Hz version is the 290FEX.
Ideal For
- Blackface and Silverface Twin Reverb power transformer replacement
- Showman and Dual Showman repair
- Bassman 100 restoration
- Super Six Reverb and Vibrosonic service
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers) |
| Part Number | 290FX |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 335-0-335, 6.5VCT@5.5A |
| Amp Model (Ref. Only) | BASSMAN 100* |
| Chassis No. (Ref. Only) | Silverface |
| Amp Manufacturer (Ref. Only) | Fender |
| Similar Amp P/N's (Ref. Only) | 125P34A, 022756 |
Electrical
| Secondary 1 | 640Vct @ 518 mA |
| Secondary 2 | 60V Bias |
| Secondary 3 | 6.5V @ 5.5A |
| Primary Volts | 120V @ 60 Hz |
Identifiers
| UPC | 623980094090 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 11.65 lbs (5.28 kg) |
Construction & Finish
| Winding | Paper |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Amp Cross-Reference (Ref. Only)
| Listed Amp (Fender Table) | VIBROSONIC*; similar P/N: 125P34A, 022756 |
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Frequently Asked Questions
Which Fender part numbers does the 290FX cross to?▾
125P34A and 022756, for reference only.
What are its ratings?▾
Primary 120V @ 60 Hz; secondaries 640Vct @ 518 mA, 60V bias and 6.5V @ 5.5A.
Which amps is it listed for?▾
BASSMAN 100, QUAD WITH REVERB, SHOWMAN, SHOWMAN REVERB, SHOWMAN DUAL, SHOWMAN DUAL REVERB, SUPER SIX REVERB 100, TWIN REVERB and VIBROSONIC.
Is it paper wound?▾
Yes, the ordering table lists Paper.
Is there a 240V version?▾
Yes, the 290FEX is listed with a 240V @ 50/60 Hz primary and the same secondaries.
