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RE: 6l6 pin 1 shield connection

Pin 1 of metal envelope Octal tubes connects to the metal envelope. Connect pin 1 of the socket to chassis. The metal envelope is the shield!

BTW, quite a few glass envelope Octals that have a metal ring on the base (for instance KT88) connect the ring to pin 1. Unless, like the 6SN7, pin 1 of an Octal is explicitly connected to an active electrode, tying pin 1 of the socket to the chassis is (IMO) a very reasonable action.

Eli D.

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