Thank you,
Hatch
Zenith 7D31 is in Sam's photofact #495. 3K01Z is in #666 & #650. Check with your local library. Most can get you this information. Information can be purchased from Sam's by calling 800-428-7267. Others also sell this information.
Norm
: Hello,
: I'm new to tubes but was have two amplifiers from Zenith consoles that I'm trying to find the schematics for (and wasn't able to find them in the Ridder index). One is 3k01z (using 7695s), the other is 7 (or Z) d31 and uses EL84/6BQ5 tubes.
: Thank you,
: Hatch