I've some 6336A tubes and a couple of 190V transformers plus a beefy heater transformer.
Is it possible to adapt the schematic in the link to 6336's without to much trouble ?
Plate voltage will be lower and power also but I don't need that much power.
(schematic comes from A. Ciuffoli's site A. Ciuffoli
The main problem with tubes like this is that there are hardly (none I know of) tube testers that will take them and quite often half of the dual triode is gone without the user knowing it...
Many years ago a friend of mine buit the Taki OTL and I must say it did sound very good:
The 500K plate resistor for the EF86 should be 150K and the value of filter cap for the bias supply is missing. I suppose something around 220µF/250V should do.
The value of volctrl on the input can be lowered (1M pots aren't easy to source) to 250K.
As for the Ciuffoli circuit, you'll find some advise in the OTL thread regarding this amp that you may want to consider.
1M pots are all over RadioSnack and Mouser. I'd be more afraid of it munching up HF response due to the high impedance. Although not much of a problem with a pentode input (Frank, what's happening to you!!?? :eek: ;) ).
|All times are GMT. The time now is 04:14 PM.|
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright ©1999-2015 diyAudio