Hammond 290AX Champ, Bronco & Princeton Replacement Transformer
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Create Free Business AccountKey Features
- Cross-referenced to Fender Bronco, Champ, Princeton, Princeton Reverb, Vibro Champ (ref. only)
- Similar amp P/N's 125P1B, 022772, 66079B
- 120V, 60 Hz primary
- Secondary 1: 650/550Vct @ 100 mA
- Secondary 3: 6.3Vct @ 2.25A; Secondary 4: 5V @3A
- Bobbin winding designed for drop in replacement
- RoHS and REACH compliant; 2.95 lbs
The 290AX is a 290 Series replacement power transformer that the series table cross-references to several small Fender amplifiers: BRONCO, CHAMP, PRINCETON, PRINCETON REVERB and VIBRO CHAMP. Similar amp part numbers are 125P1B, 022772 and 66079B. These references are for reference only, but they make the 290AX a common choice for techs servicing these low-power tube amps.
It has a 120V, 60 Hz primary. Secondary 1 is 650/550Vct @ 100 mA, giving two high-voltage tap options; Secondary 3 is 6.3Vct @ 2.25A and Secondary 4 is 5V @3A. The manufacturer's short description reads "325-0-325,5V@2A, 6.3VCT@2A"; the part page and series table ratings are listed in the specifications. The winding is bobbin.
- Bronco: AA764, AB764, Blackface, Silverface
- Champ: 5C1, 5E1, 5F1, Tweed, Blackface, Silverface, AA764
- Princeton: Tweed, Brown, Blackface, Silverface, AA964
- Princeton Reverb: AA1164, AA764, B1270, Blackface, Silverface
- Vibro Champ: AA764, Blackface, Silverface
The 290 Series is designed for drop in replacement of original units, with parts designed to look similar to factory units where possible and materials and design specs kept close to the original to preserve the stock "tone". The 290AX ships at 2.95 lbs (1.34 kg), is RoHS and REACH compliant, and carries UPC 623980094038.
Ideal For
- Fender Champ and Vibro Champ transformer replacement
- Fender Princeton and Princeton Reverb repair
- Fender Bronco restoration
- Tweed, Blackface and Silverface amp service
Overview
| Series | 290 Series |
| Description | Power transformer, replacement for Fender guitar amp, 290 series |
| Part Number | 290AX |
| Series Name | Tube Guitar Amplifier - Power Transformers |
| Series Tagline | Replacement & Upgrades |
| Short Description | 325-0-325,5V@2A, 6.3VCT@2A |
Electrical
| Secondary 1 | 650/550Vct @ 100 mA |
| Secondary 3 | 6.3Vct @ 2.25A |
| Secondary 4 | 5V @3A |
| Primary Volts | 120V, 60 Hz |
Identifiers
| UPC | 623980094038 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 2.95 lbs (1.34 kg) |
Construction & Finish
| Winding | Bobbin |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Amplifier Reference (Ref. Only)
| Amp Models | BRONCO*, CHAMP*, PRINCETON*, PRINCETON REVERB*, VIBRO CHAMP* |
| Amp Manufacturer | Fender |
| Similar Amp P/N's | 125P1B, 022772, 66079B |
| Chassis No. (Champ) | 5C1, 5E1, 5F1, Tweed, Blackface, Silverface, AA764 |
| Chassis No. (Bronco) | AA764, AB764, Blackface, Silverface |
| Chassis No. (Princeton) | Tweed, Brown, Blackface, Silverface, AA964 |
| Chassis No. (Vibro Champ) | AA764, Blackface, Silverface |
| Chassis No. (Princeton Reverb) | AA1164, AA764, B1270, Blackface, Silverface |
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Frequently Asked Questions
Which Fender amps is the 290AX referenced to?▾
Bronco, Champ, Princeton, Princeton Reverb and Vibro Champ, with similar amp P/N's 125P1B, 022772 and 66079B (reference only).
What is the 290AX primary voltage?▾
120V, 60 Hz.
What are the 290AX secondaries?▾
650/550Vct @ 100 mA, 6.3Vct @ 2.25A and 5V @3A.
Why does the short description say 325-0-325?▾
The manufacturer's short description reads "325-0-325,5V@2A, 6.3VCT@2A"; the part page and series table list 650/550Vct @ 100 mA, 6.3Vct @ 2.25A and 5V @3A.
Is there a 240V version?▾
The 290AX itself is listed with a 120V, 60 Hz primary only.
How is the 290AX wound?▾
Bobbin winding.
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