307A / VT-225 very good tubes for audio amplifiers
I made one hi-end SE amplifier with 307A and 10Y and it plays really good!!!
I also started one low budget tube amplifier with VT-225 valve but still didn't finish it
Good luck!!!
I made one hi-end SE amplifier with 307A and 10Y and it plays really good!!!
I also started one low budget tube amplifier with VT-225 valve but still didn't finish it
Good luck!!!
I have a set of Transcendar OPT's...
Those are the output transformers I used on my Tubelab Simple Single Ended amplifier. They are fantastic with triode strapped EL34, 6L6, or KT88 types.
http://i69.photobucket.com/albums/i43/Ty_Bower/Simple SE/P1100376.jpg
http://i69.photobucket.com/albums/i43/Ty_Bower/Simple SE/P1100484.jpg
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I use exactly those OPTs in my 1625/VT100 Amp.
Hi manta, nice amp.You might want to try running the 1625 cathode resistor directly to ground with the capacitor remaining as is. That way only AC goes through the secondary and you have no DC offset at the output terminals.
Hi manta, nice amp.You might want to try running the 1625 cathode resistor directly to ground with the capacitor remaining as is. That way only AC goes through the secondary and you have no DC offset at the output terminals.
Thanks for that hint. That's a good idea, I didn't think that far. What I also wanted to do is DC coupling of the 6C8G but I hadn't enough Ub. Maybe it's time for a redesign now.
Thanks everybody. I picked up some 2A3s and filiment Tx's at a garage sale this weekend. So for now that's the direction I'll go.
The ideal primary for this and the other tubes mentioned is 2.5K-3.5K. On the 2A3 project I'm willing to give up a little power for the benifit of reduced distortion but I would still like to find a tube that could make better us of a 5K load line.
The ideal primary for this and the other tubes mentioned is 2.5K-3.5K. On the 2A3 project I'm willing to give up a little power for the benifit of reduced distortion but I would still like to find a tube that could make better us of a 5K load line.
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