This has been a favorite amp for me. It's based on the 5F11 tweed Vibrolux. But important changes in the power supply, speaker complement, and global negative feedback circuit move the amp beyond the Vibrolux, making for a louder, cleaner, and fatter voice. Since it melds main features of tweed Super and Vibrolux amps, I call this amp a "Suprolux". The amp is in excellent condition. The cabinet has a few light scuffs on the tolex.
Asking $775. Postal money order or Paypal (will split Paypal fees). Buyer pays shipping. Inquire by email.
Technical Rundown
- Circuit based on 5F11 Vibrolux amp with the following enhancements:
- Choke-filtered power supply
- Fixed-bias phase splitter
- Reduced negative feedback
- Slowed tremolo rate
- Second gain stage cathode bypass
- Allen Amps TP25 150mA power transformer
- Allen Amps TO22 22W output transformer
- NOS GE 5V4 rectifier
- 47uF/47uF/22uF F&T power supply filters
- Power Tubes: TAD 6L6-WGC for about 25W or new-issue Tung-Sol 6V6 for about 18W
- Adjustable bias, with 1-Ohm cathode resistors to facilitate adjustment
- 12AX7 preamp tubes
- Nichicon and Vishay Atom electrolytic capacitors
- 2W metal oxide power resistors
- 1W carbon film signal resistors
- Mallory 150 and Mojo Dijon coupling caps
- Cloth-insulated solid core hookup wire
- Finger-jointed, solid pine cabinet (5F4 Super)
- Floating birch ply baffle
- Eminence Ragin Cajun and Copperhead 10" speakers (not pictured)
