Re: 6SL7 tube CCS in V3 socket

Posted by Al Sekela (A) on April 16, 2002 at 15:26:20

In Reply to: 6SL7 tube CCS in V3 socket posted by Paul Speltz on April 16, 2002 at 10:34:23:

I tried the 6SL7 in the CCS position of my MA-1s a couple of weeks ago upon Mark's suggestion, and upon locating a few at Radio Electric Supply in Florida. I received a couple branded Motorola and with a dull grey spatter coating inside the envelope completely surrounding the works, but not on the tops. I also got a couple branded RCA, some with and one (with later date code) without this coating. BTW, does anyone know what this coating is, and who actually made the tubes? The RCA and Motorola look identical as far as I can see past the coating.

There was a definite sonic improvement with the 6SL7. The treble seems firmer and more life-like. This improvement is similar in magnitude, but different in quality, to that from using Tung-Sol 6SN7 in the driver position in place of, say, NOS GE. The tubes are cheaper and reduce the consumption of 6SN7. My MA-1s are located directly behind my Magnepan MG-20s, so microphonics do not seem to be an issue with this vintage.

If anyone locates a large, cheap stash of these 6SL7, please share with the group.

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Follow Ups Full Thread

Topic - 6SL7 tube CCS in V3 socket - Paul Speltz 10:34:23 04/16/02 (17)

Re: circuit changes to accomodate 6SL7 as CCS - Ralph 09:38:55 04/26/02 (0)

Re: 6SL7 tube CCS in V3 socket - Roy 15:41:03 04/17/02 (6)

Zeners - Paul Speltz 08:18:56 04/18/02 (5)

Re: Zeners - Roy 11:47:55 04/18/02 (4)

Re: Zeners - Paul Speltz 19:46:01 04/18/02 (3)

No zeners - Lew 07:12:19 04/19/02 (0)

Re: Zeners - Roy 02:50:29 04/19/02 (0)

Re: Zeners - Al Sekela 20:30:09 04/18/02 (0)

Re: 6SL7 tube CCS in V3 socket - Al Sekela 15:26:20 04/16/02 (1)

Re: 6SL7 tube CCS in V3 socket - Shred 16:28:42 04/16/02 (0)

Re: 6SL7 tube CCS in V3 socket - Wayne 13:45:08 04/16/02 (0)

Paul,... - Michael 13:36:53 04/16/02 (2)

Re: Paul,... - Paul Speltz 15:19:55 04/17/02 (1)

Thanks fo the offer... - Michael 19:55:56 04/17/02 (0)

Re: 6SL7 tube CCS in V3 socket - Lew 13:36:19 04/16/02 (2)

Re: 6SL7 tube CCS in V3 socket - Paul Speltz 15:03:56 04/17/02 (1)

Re: 6SL7 tube CCS in V3 socket - Lew 07:21:21 04/18/02 (0)

Follow Ups

Re: 6SL7 tube CCS in V3 socket - Al Sekela 15:26:20 04/16/02 (1)

Re: 6SL7 tube CCS in V3 socket - Shred 16:28:42 04/16/02 (0)

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