M-11 12AX7/12AU7 Conundrum
Posted: Sat May 13, 2006 9:58 am
Hi!
My M-11 (1957?) seems to call for a 12au7 in V1 and a 12ax7 in V2 (stamped on chassis); however it sounds horrible this way (way too much distortion). If I put the 12au7 in V2, however, the amp kills, and is still loud. Is there any possibility the chassis was stamped wrong?
All caps and cap can have been replaced with new, as have all suspect resistors.
Thanks,
Mark
My M-11 (1957?) seems to call for a 12au7 in V1 and a 12ax7 in V2 (stamped on chassis); however it sounds horrible this way (way too much distortion). If I put the 12au7 in V2, however, the amp kills, and is still loud. Is there any possibility the chassis was stamped wrong?
All caps and cap can have been replaced with new, as have all suspect resistors.
Thanks,
Mark