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previous: Brett I have an old Sano amp with a pair ... -- 7/30/2000 5:50 AM

Re: 7591A Power Tubes?

7/30/2000 6:35 PM
Dave M	Re: 7591A Power Tubes? Brett, I have seen another substitution for these in the Antique Electronic Supply catalog. They sell an adapter to run 6GM5 tubes in place of 7591A's. Supposedly the 6GM5's are electonically identical to 7591's but with a different pinout. The only problem is they add 1 1/4" to the height of the tube so you have to make sure there is enough room in the cabinet to hold these. You could also with a little work just change the sockets to accept the 6GM5 base. The 6GM5's sell for $22.70 at AES which is very reasonable for a NOS tube. I haven't tried 6GM5's yet though so I'm not sure if they sound identical to 7591A's but supposedly they do. If you end up trying these let me know how they sound. Dave M

7/30/2000 6:35 PM

Dave M

Re: 7591A Power Tubes?

Brett, I have seen another substitution for these in the Antique Electronic Supply catalog. They sell an adapter to run 6GM5 tubes in place of 7591A's. Supposedly the 6GM5's are electonically identical to 7591's but with a different pinout. The only problem is they add 1 1/4" to the height of the tube so you have to make sure there is enough room in the cabinet to hold these. You could also with a little work just change the sockets to accept the 6GM5 base. The 6GM5's sell for $22.70 at AES which is very reasonable for a NOS tube. I haven't tried 6GM5's yet though so I'm not sure if they sound identical to 7591A's but supposedly they do. If you end up trying these let me know how they sound.

Dave M

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Graywater Folks,First, the 75... -- 7/30/2000 6:46 PM