As a lot of us know Skunkie is trying to take this little pig of a amp that a lot of us own, an turn it to something that can be enjoyable. I was wondering if anyone had any ideas what its going to take, to get this little Turd amp to behave. I’m guessing it the dirty B+ What do you think 🤔 Is it possible? You know they have sold thousands of these amps thanks to a couple of well known YouTube channels. 🤔🤷♂️🤒😎 My wife doesn’t speak English well, so we use a lot of hand signals lol. Love To Here You’re Thoughts
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The 820K will tone down the high end and if it's still too bright, try a 470K. This "feedback" resistor can be used to voice the amp.
Hi. It took me almost 3 hours to do the mods Skunkie suggested. For my A10 that means new Tungsol rectifier and 2 new Tungsol 12AX7's and changed the coupling cap to a decent one. I'm glad I did. Although I though the amp sounded well enough compared to my SS Onky this definitely was a game changer. It only has a couple of hours with the new tubes but three big changes:
Bass. It is there. I run below 180 hz trough a plate amp but feed this from the speaker terminals. I have to do a little homework now because the base is too much now for the pre mod settings.
Clear. It plays a bit on bright side for me. May be the 12ax's must burn in a bit and I noticed two unused 820Koms resistors left. Forgot to mount these (and the bleeder resistor).
Louder. Considerably louder now. I use 95db (Betsy's F8) efficient speakers and it will play louder than I will ever use them.
I had to tighten all screws inside... it was thrown together in the factory pretty quickly.