RE: 300bs at 300volts

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

Posted by RC Daniel (A) on May 9, 2012 at 04:34:54

In Reply to: RE: 300bs at 300volts posted by Jim Womble on May 8, 2012 at 04:53:59:

I have had a few drinks, but the original WE datasheets show ~ max dissipation at ~ 28W, with recommended dissipation at ~ 18 W (or slightly less)

People's opinions on ideal operating points vary. and I/V ratio of 1ma:6 (or greater) volts with 5K load is often recommended for a more 45-type sound (especially if running at lower dissipation). Supposedly a 300B at a, say more 2A3 type operating point, at I/V of 1 mA:4 volts at 2k5 to 3k load lends itself to a more 'classic' 300B sound. That said, the latter could sound very nice in an appropriate circuit that runs the 300B below 18 W dissipation, especially if a slightly higher load is used....

I am building one of the latter at the moment and hope to compare it (roughly) to one of the former in the next couple of months...

Of course, the make of tube and circuit matter...
Cheers.
"In the beginner's mind there are many possibilities, in the expert's mind there are few." Shunryo Suzuki

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Follow Ups Full Thread

Topic - 300bs at 300volts - jonny- 14:29:30 05/07/12 (14)

RE: 300bs at 300volts - hagustos 00:49:00 05/11/12 (2)

RE: 300bs at 300volts - hagustos 01:49:16 05/16/12 (0)

RE: 300bs at 300volts - jonny- 09:56:48 05/15/12 (0)

That is very low power output - richardl 11:08:00 05/08/12 (2)

RE: That is very low power output - RC Daniel 21:33:55 05/10/12 (1)

RE: That is very low power output - Cleantimestream 11:38:57 05/31/12 (0)

RE: 300bs at 300volts - Palustris 08:35:26 05/08/12 (2)

RE: 300bs at 300volts - RC Daniel 04:41:38 05/11/12 (0)

RE: 300bs at 300volts - jonny- 16:08:01 05/08/12 (0)

RE: 300bs at 300volts - Jim Womble 04:53:59 05/08/12 (4)

RE: 300bs at 300volts - RC Daniel 04:34:54 05/09/12 (3)

RE: 300bs at 300volts - Jim Womble 09:38:35 05/09/12 (2)

RE: 300bs at 300volts - Palustris 10:48:33 05/09/12 (1)

Agreed. - RC Daniel 19:13:55 05/10/12 (0)

Follow Ups

RE: 300bs at 300volts - RC Daniel 04:34:54 05/09/12 (3)

RE: 300bs at 300volts - Jim Womble 09:38:35 05/09/12 (2)

RE: 300bs at 300volts - Palustris 10:48:33 05/09/12 (1)

Agreed. - RC Daniel 19:13:55 05/10/12 (0)

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