n cook wrote in message
...
Retro look of the 1960s Vox AC30 amp made probably 2004 with lots of SM
digital chippery for effects undreamt of in the 60s.
One 12AX7 , but is it for show only ?
Heaters have an AC supply but the anodes don't seem have any HV components
attached to them. The speaker o/p is a non-retro National Semi LM3886T.
I've not powered up yet as only poking around cold at the moment as I've
never seen the like before, all seems DVM ok for power supplies etc.
Apparently went pop between songs and then no more.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/




I will probably use a 100W TDA7294 as I've a couple at hand, pinning swapped
to match the 68W LM3886.
Monitoring phones outlet, all effects and classic amp colourations are
functioning so the valve is presumably an expensive and highly inefficient
indicator, for show only, the maximum DC on any of its pins wrt ground
is -15V


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/