Hammond 290YX 120V Bassman 70 Silverface Power Transformer
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Create Free Business AccountKey Features
- 120V @ 60 Hz primary
- Replacement for Fender BASSMAN 70, Silverface (ref. P/N 13895)
- 372Vct @ 400 mA high voltage secondary
- 56V bias winding
- 6.3Vct @ 4A secondary
- Bobbin winding; 8 lbs (3.63 kg); RoHS and REACH compliant
The 290YX is a 290 Series tube amplifier power transformer listed as a replacement for the Fender BASSMAN 70, Silverface chassis, with similar amp P/N 13895 (reference only). Its 120V @ 60 Hz primary makes it the 120V version for technicians and owners repairing this amplifier.
The secondaries are 372Vct @ 400 mA (Secondary 1), a 56V bias winding (Secondary 2) and 6.3Vct @ 4A (Secondary 3). The short description reads 186-0-186V@.4A, 6.3VCT@4A,56V, and the winding is listed as bobbin.
Parts in the 290 Series were designed for drop in replacement of the original units and to look physically similar to the original factory transformers where possible. Material and design specs were kept as close as possible to the original to preserve the stock tone.
Shipping weight is 8 lbs (3.63 kg). The 290YX is RoHS and REACH compliant, with UPC 623980037370 and UNSPSC 39121301. A 240V @ 50/60 Hz version with the same secondaries is listed as the 290YEX. Amp model, similar part number and chassis are listed for reference only; compare the 372Vct, 56V bias and 6.3Vct ratings with your existing transformer before ordering.
Ideal For
- Fender BASSMAN 70 Silverface power transformer replacement
- 120V tube amp repair
- Silverface amp restoration
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers, Replacement & Upgrades) |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 186-0-186V@.4A, 6.3VCT@4A,56V |
Electrical
| Secondary 1 | 372Vct @ 400 mA |
| Secondary 2 | 56V Bias |
| Secondary 3 | 6.3Vct @ 4A |
| Primary Volts | 120V @ 60 Hz |
Identifiers
| UPC | 623980037370 |
| UNSPSC | 39121301 |
Amplifier Reference
| Amp Manufacturer | Fender |
| Amp Model (Ref. Only) | BASSMAN 70* |
| Chassis No. (Ref. Only) | Silverface |
| Similar Amp P/N's (Ref. Only) | 13895 |
Packaging & Shipping
| Shipping Weight | 8 lbs (3.63 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
Which amp is the 290YX listed for?▾
The Fender BASSMAN 70, Silverface chassis, similar P/N 13895, for reference only.
What is the primary voltage?▾
120V @ 60 Hz.
What are the 290YX secondaries?▾
372Vct @ 400 mA, a 56V bias winding and 6.3Vct @ 4A.
What is the difference between the 290YX and 290YEX?▾
The 290YX has a 120V @ 60 Hz primary; the 290YEX has a 240V @ 50/60 Hz primary with the same secondaries.
What winding type does it use?▾
Bobbin.