Hammond 290NX Vox AC30 Vintage Vertical Paper-Wound 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
- Listed for the Vox AC30 Vintage / AC30 60's Vintage Vertical (reference only)
- Multi-tap primary: 100/120/220/230/240 VAC 50/60 Hz
- Drawing windings: 290-0-290V @ 265mA, 6.3VCT @ 6.8A, 5V @ 3.42A
- Paper-wound construction
- Hipot tested 2500V, 60Hz, 1 sec; leads 9" min., stripped 0.5"
- 10.55 lbs (4.79 kg); RoHS and REACH compliant
The 290NX is a Hammond 290 Series power transformer listed as a replacement for the Vox AC30 Vintage; the ordering table lists it for the AC30 60's Vintage Vertical. Its short description reads POWER FOR AC30 VINTAGE. It suits techs and owners restoring vintage-style AC30 amps.
The primary is rated 100/120/220/230/240 VAC 50/60 Hz and the ordering table lists paper winding. The drawing shows a 290V-0-290V (580V CT) high-voltage winding at 265mA, a 6.3VCT winding at 6.8A and a 5V winding at 3.42A.
Drawing test data at 240V, 60 Hz lists a 212mA maximum excitation current and no-load voltages of 295.7V per half (591.4V end to end), 3.334V per half (6.667V) and 5.238V. It is hipot tested primary to secondary at 2500V, 60Hz for 1 second, with all leads 9" out minimum, stripped 0.5". Drawing dimensions are A 4.389", B 4.700" max., C 5.265", D 3.520", E 2.300" ref. and G 0.281" x 0.563".
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 290NX ships at 10.55 lbs (4.79 kg), is RoHS and REACH compliant, and carries UPC 623980094359 and UNSPSC 39121301.
Ideal For
- Vox AC30 60's Vintage Vertical power transformer replacement
- Vintage-style AC30 restoration
- Multi-voltage tube amp service
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers) |
| Part Number | 290NX |
| Product Type | Power transformer, replacement for Vox guitar amp, 290 series |
| Short Description | POWER FOR AC30 VINTAGE |
| Amp Model (Ref. Only) | AC30 Vintage |
| Amp Manufacturer (Ref. Only) | Vox |
Electrical
| Primary Volts | 100/120/220/230/240 VAC 50/60 Hz. |
| 5V Winding (Drawing) | 5V @ 3.42A |
| Primary Taps (Drawing) | 0V, 100V, 120V, 220V, 230V, 240V |
| Heater Winding (Drawing) | 6.3VCT @ 6.8A |
| High-Voltage Winding (Drawing) | 290V-0-290V (580V CT) @ 265mA |
Identifiers
| UPC | 623980094359 |
| UNSPSC | 39121301 |
Dimensions (Drawing)
| Dimension A | 4.389" ±0.063 |
| Dimension B | 4.700" MAX. |
| Dimension C | 5.265" ±0.063 |
| Dimension D | 3.520" ±0.063 |
| Dimension E | 2.300" REF. |
| Dimension G | 0.281" x 0.563" ±0.015 |
Packaging & Shipping
| Shipping Weight | 10.55 lbs (4.79 kg) |
Construction & Finish
| Leads | All leads 9" out min., stripped 0.5" |
| Winding | Paper |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Electrical Test Data (Drawing)
| DCR @ 20°C, BLK-BRN | 1.200 Ω ±20% |
| DCR @ 20°C, BLU-WHT | 3.410 Ω ±20% |
| DCR @ 20°C, BRN-BLU | 0.250 Ω ±20% |
| DCR @ 20°C, GRN-GRN | 0.040 Ω ±20% |
| DCR @ 20°C, RED-GRY | 0.350 Ω ±20% |
| DCR @ 20°C, RED-RED | 68.30 Ω ±20% |
| DCR @ 20°C, WHT-RED | 0.690 Ω ±20% |
| DCR @ 20°C, YEL-YEL | 0.060 Ω ±20% |
| Hipot Primary-Secondary | 2500V, 60Hz, 1 sec |
| No-Load Voltage GRN-GRN | 6.667V ±2% |
| No-Load Voltage RED-RED | 591.4V ±2% |
| No-Load Voltage YEL-YEL | 5.238V ±2% |
| No-Load Voltage GRN-GRN/YEL = GRN/YEL-GRN | 3.334V ±2% |
| No-Load Voltage RED-RED/YEL = RED/YEL-RED | 295.7V ±2% |
| Excitation Current (Iex) @ 240V, 60Hz, BLK-RED | 212mA Max. |
Amp Cross-Reference (Ref. Only)
| Listed Amp (VOX Table) | AC30 60's Vintage Vertical |
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
Which Vox amp is the 290NX listed for?▾
The AC30 Vintage, listed in the ordering table as the AC30 60's Vintage Vertical, for reference only.
What primary taps does it have?▾
100/120/220/230/240 VAC 50/60 Hz.
What secondary windings are shown on the drawing?▾
290V-0-290V (580V CT) at 265mA, 6.3VCT at 6.8A and 5V at 3.42A.
Is it paper wound?▾
Yes, the ordering table lists Paper.
What are the overall drawing dimensions?▾
A 4.389", B 4.700" max., C 5.265", D 3.520", E 2.300" ref., G 0.281" x 0.563".
