my first 300B SET

SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

AN Kit1 - purchased here at AA needing work (sweat equity)

I'm just putting some run time on it to shake out any bugs I might have installed in it while correcting the issues I bought it with. I took it completely apart and reassembled it and changed it from 2A3 to 300B operation. Once I feel confident that I fixed it right, it's back to the bench to check for any signs of "oh shit !?!?". I'm also seriously considering modding the power supply with some oil cans. I did bypass the cathode 220ufd electrolytic cap on the 300B with a .1 ufd metalized poly Dayton cap instead of removing it. I added a 390 ohm resistor in series with the paralleled 1.5Ks (as I did not have the 1.8Ks the build manual calls for) to set what I figure bias to be at ~ 72 milliamps.
And of coarse as soon as I got it upstairs and plugged into my system I saw the 6SN7 socket isn't level! damn it! easy enough to fix.
I consider myself a rank amateur and open to all CONSTRUCTIVE criticisms and suggestions.

Life is not a journey to the grave with the intention of arriving safely in one pretty and well-preserved piece, but to slide across the finish line broadside, thoroughly used up, worn out, leaking oil, and shouting GERONIMO!

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Topic - my first 300B SET - sober1 21:44:47 08/12/14 (16)

RE: my first 300B SET - hifipaul 12:51:20 08/13/14 (4)

RE: my first 300B SET - Frihed89 17:01:12 08/13/14 (2)

nice link, thanks! - sober1 18:46:07 08/13/14 (1)

RE: nice link, thanks! - Frihed89 23:17:10 08/13/14 (0)

thanks Paul - sober1 13:58:56 08/13/14 (0)

RE: my first 300B SET - Frihed89 01:37:13 08/13/14 (10)

these cans - sober1 07:25:51 08/13/14 (2)

coupling caps - thermionic addictions 13:32:05 08/13/14 (0)

Try - Frihed89 09:30:12 08/13/14 (0)

OPTs - andy evans 02:44:06 08/13/14 (6)

RE: OPTs - Caucasian Blackplate 17:30:38 08/13/14 (0)

RE: OPTs - sober1 08:12:54 08/13/14 (3)

Nobu Shishido. nt. - RC Daniel 18:58:50 08/13/14 (2)

Sasuma Sakuma (nt) - drlowmu 10:31:19 08/14/14 (1)

You are right - I confused them! nt. - RC Daniel 15:26:08 08/22/14 (0)

Kubala? - Frihed89 07:28:32 08/13/14 (0)

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