RE: tube rolling for newbies - Cary SLP - 05

Posted by Eli Duttman (A) on July 3, 2015 at 17:52:47

In Reply to: tube rolling for newbies - Cary SLP - 05 posted by psacamano on July 3, 2015 at 16:13:45:

New Sensor's recent entries in the 5AR4 sweepstakes have been received favorably. However, a pretty simple tweak makes the inexpensive Sovtek 5AR4 rock solid. I've uploaded the graphic (not original with me) for the tweak. Given my somewhat "anal" nature, I suggest UF4007s instead of the 1N4007s, simply because they are quieter. The vacuum rectifier blocks SS diode switching noise from reaching the PSU filter, but (IMO) less noise, from the outset, has to be better.

I strongly 2nd the "reissue" TungSol 6SN7 suggestion. If you want to try NOS, without surrendering body parts, build or buy Loctal/Octal adapters and install 7N7s. External labeling and packaging means nothing, when dealing with Loctal tubes, as all were made by Sylvania in PA. If you do some research, you'll find lots of folks "drooling" over NOS Sylvania made 6SN7s. The "guts" in Sylvania 6SN7s and 7N7s made in the same time frame are the same. ;>)

Eli D.

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Follow Ups Full Thread

Topic - tube rolling for newbies - Cary SLP - 05 - psacamano 16:13:45 07/03/15 (14)

Psvane 6SN7-UK - krisjan 16:07:59 07/18/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - dtc 17:57:48 07/08/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - psacamano 17:12:47 07/08/15 (0)

Could I suggest that instead of tube-rolling you improve the PSUadd - Timbo in Oz 15:14:01 07/07/15 (1)

RE: Could I suggest that instead of tube-rolling you improve the PSUadd - psacamano 17:05:33 07/08/15 (0)

RE: Don't be so hasty. - DAK 12:54:12 07/06/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - psacamano 13:19:35 07/04/15 (1)

RE: tube rolling for newbies - Cary SLP - 05 - Mendel 14:48:20 07/04/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - psacamano 18:39:58 07/03/15 (1)

RE: tube rolling for newbies - Cary SLP - 05 - Eli Duttman 18:45:02 07/03/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - Eli Duttman 17:52:47 07/03/15 (1)

RE: tube rolling for newbies - Cary SLP - 05 - Mechans 13:32:05 07/04/15 (0)

The newly made Tung-sol 6SN7's are surprisingly, . . - John PA 17:05:38 07/03/15 (0)

RE: tube rolling for newbies - Cary SLP - 05 - airtime 16:34:37 07/03/15 (0)

Follow Ups

RE: tube rolling for newbies - Cary SLP - 05 - Eli Duttman 17:52:47 07/03/15 (1)

RE: tube rolling for newbies - Cary SLP - 05 - Mechans 13:32:05 07/04/15 (0)

RE: tube rolling for newbies - Cary SLP - 05

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