solderjunkie
Member
Somewhere in this thread, I thought there was mention of adding a recommended value for a volume pot after the input for this design, but I can't seem to locate it. Can someone point me there?
Great Dave. I will go forth with your clone. I have a Brimer CV4004 that I received for my guitar amp. I wonder how it might perform in this. John.Absolutely correct. When I did that project, it was never done with the idea of offering it up on AK for this thread but rather, was a pre-project to duplicate at a later date with a grandson who was showing strong interest in my hobby. I didn't have any spare 6EU7s at the time for the developmental model, but I did have a ton of 12AX7s, so that's the tube that made the cut, and the pin illustration you see.
Dave
I'm actually thinking of doing the OPPOSITE of what Dave did, with the bucking winding- using it in opposite polarity, to BOOST the B+. Yes, I know that will upset the heaters- but a .5 to .68 ohm, 5 watt resistor in series with the heaters, will put those voltages back down in spec, for the cost of about a dollar...
I was just rereading thread.
Gordon if your interested,I ship you the abandoned carcass (original chassis, with sockets and original OPTs)
PM me if you're interested.
Thanks nj phoenix. I looked for 8300s, but did not see much, I guess they were not as popular. This 8302 is a phono only, so the PT may be small. I'll take some measurements once I get my light bulb current limiter built. The only experience I have with vacuum tubes was many years ago tuning up a CB radio - someone keyed the mic when I was connecting a 50 ohm dummy load - I swore off tube gear after that enlightening event.