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Questions about tubes and gear that glows. FAQ

Easy, Yes but . . .

The adaptors are a good quick/easy solution and a pretty good deal since they come with tubes.

But you might have a problem with the additional height in some cases, like the Sherwood S-5000, which has a pretty low profile. They may fit, but it will probably be a tight fit. Or, even if you have an open chassis, maybe you just don't like the way they look sticking out above the other tubes on the chassis.

The big advantage of the adaptors is that you can switch back to 7199s if you like. If you simply want to use cheaper, more available, tubes (that apparently measure essentially the same as the 7199) you could save your $35 and simply rewire the sockets. Only three wires need to be changed:

7199 ---> 6GH8 (or 6U8, 6BL8, 6EA8, 6KD8 - all have same pinout)
Pin 2 ---> Pin 6
Pin 6 ---> Pin 7
Pin 7 ---> Pin 2

. . . Charlie

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  • Easy, Yes but . . . - FlaCharlie 10/14/1407:33:49 10/14/14 (0)


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