This is an amp that never was, but could have been. It combines features of two late 1950's Fender tweed amplifiers, the 5F11 Vibrolux and 5F6(A) Bassman. The circuit is based on the Vibrolux. But the power supply is more robust, the output is significantly increased, and the gain characteristics are altered. The cabinet is all Bassman, complete with four light and fast 10" speakers. The result is an amp that retains the basic 5F11 voice, while giving it a little more crunch and a lot more authority.
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
- Allen Amps TP25 150mA power transformer
- Mercury Magnetics tweed Pro output transformer
- NOS Tung-Sol 5V4 rectifier
- 47uF/47uF/22uF F&T power supply filters
- TAD 6L6WGC power tubes
- 12AX7 preamp tubes
- Nichicon and Vishay Atom electrolytic capacitors
- Metal oxide power resistors
- Carbon composition signal resistors
- Mojo Vitamin Q oil-filled coupling caps
- Cloth-insulated solid core hookup wire
- Finger-jointed, solid pine cabinet (5F6-A Bassman)
- Floating birch ply baffle
- Weber VST Sig10AS speakers (3) and Warehouse WGS10 speaker