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In Reply to: RE: Metal cased tubes posted by FenderLover on March 24, 2014 at 00:19:18
I think the primary purpose was for shielding in RF circuits. Most have pin one connected to the case.
Be careful using metal 6V6 and 6L6. Lots of amps (Fender included) use pin one as a tie point for the screen resistor. You can get a nasty shock by touching the metal case.
Besides that, they can sound very good. AFAIK, they have the same internals as blackplate 6v6 and 6L6.
Follow Ups:
Perhaps, the tightness of the envelope has sonic differences...
Many older audio folks liked the metal 6L6 family...
/.
It's a beam-power pentode.
R.
...thin bottle like the EL34. The 6L6, metal cased or glass on the outside, will always be a beam power tube.
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