John - be impressed 8)
Mods:
Hum and noise reduction modifications
AC to DC heater (filament) supply conversion mod.
HT supply filter and voltage drop mod
Re-positioning the output transformer)
Amp voicing mod
? 5F1 a.k.a. ?1956-1964 Tweed Champ? - More gain but not too much
Protection Mod (Fitting an H.T. Fuse)
Standby switch
Pentode/Triode mode switch mod
Not done this one ? a bit intricate and not for the faint hearted (which I?m not). Might give it a go now though based on the success of this.
Sounds even better than it did. Easier to get a bit of nice distortion at lower volumes and quiet as a mouse even on full for recording.
It's now quite heavily modded including the 6 inch Jensen, valves and JohnA's speaker attenuator.
Must confess that I did think I'd broken it but coincidently the 12AX7 valve had packed up now running fine on a Marshall EEC83 which was all I could get on a Sunday
Dave