6G10 not-quite-tweed "Harvard" Amp




This amp is marketed by Weber VST as a 5F2A "Princeton"; it could also be considered a 6G10 "Harvard" — and just to be different, that's what I call this one. I started off with the Weber kit, using the cabinet, chassis, eyelet board, power transformer, and two resistors, but subbing higher quality components for everything else. The result is a toneful package that sounds great on its own and also adds some fatness when run in parallel with my Hot Fudge combo.
Technical Rundown
  • Fender Electric Instruments 6G10 Circuit
  • Single channel, two inputs
  • Volume and Tone controls
  • Weber VST 100mA power transformer
  • NOS Tung-Sol 5V4G rectifier
  • F&T and Nichicon electrolytic capacitors
  • 2W metal oxide power resistors
  • Allen Amps TO11 output transformer
  • EH 6L6 power tube
  • Webcor 12AX7 preamp tube
  • 1W carbon film signal resistors
  • Mallory 150 coupling caps
  • Cloth-insulated solid core hookup wire
  • Finger-jointed, solid pine cabinet
  • Floating birch ply baffle
  • Eminence Legend 105 10" speaker