6SN7 for Sex Amp

Cary · 2656

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Offline Cary

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on: November 28, 2014, 10:55:21 AM
I just want to be sure is it safe to use the 6SN7 in the SEX 2.0 and 2.1 without changing anything?

Thanks!

Cary


Offline Paul Birkeland

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Reply #1 on: November 28, 2014, 10:58:14 AM
You'll need 6SN7GTB's, and to be OK with them not providing their otherwise expected lifetime of service.

Paul "PB" Birkeland

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Offline johnsonad

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Reply #2 on: November 28, 2014, 02:00:46 PM
They need to be GTB tubes though as they are rated for 400v.

Aaron Johnson

Offline Paul Joppa

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Reply #3 on: November 30, 2014, 01:39:09 PM
Quote from: johnsonad on November 28, 2014, 02:00:46 PM
They need to be GTB tubes though as they are rated for 400v.
And they can take 5 watts on one plate - original 6SN7s are rated 2.5 watts maximum.

Paul Joppa

Offline boulos

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Reply #4 on: December 03, 2014, 02:30:30 AM
I've tried a few well used 6SN7GTB tubes in the SEX 2.1.  As cautioned before, the amp runs the tubes harder than usual for a 6SN7.  It has revealed a few tubes to be noisy (or perhaps it contributed to the issue).


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