Fisher 400--Locating under-chassis Caps

Thanks, Larry. I had to re-tube the 400 and I used new production Russian tubes from Jim McShane: two matched Sovtek 12AX7LPS for the phono section, and singles for the others (12AX7LPS for the tone control amp and Tung Sol re-issues for the PI/Driver and MPX-65) at Jim's recommendation. He tests the heck out of the tubes and all seem to be working very well.

Gadget, the issue was the Driver/PI just running out of breath with clipping well short of max power. I didn't observe any issues with drop-outs as I ramped up power to max while testing.
 
I had a new Sovtek 12AX7LPS in the PI position and I thought it sounded great. Just one opinion from the other side. But now I have real old Tung-Sol's in there. Tube rolling fun. Thorne
 
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