In Reply to: RE: 12bh7 substitution in pilot sa 260 posted by Eli Duttman on February 26, 2012 at 19:10:59:
The schematic shows a "aux power socket". I assume this is to power the preamp.
The difference between a 12au7 and a 6cg7 is .3 amps.
I would think a preamp would draw at least .3 amps of heater current.
The schematic for the non-powered preamp (that I assume goes with this power amp) shows the heater line (pins 1 and 3) being rectified to feed 4 12ax7 heaters.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- I think the answer is yes - Tre' 02/27/1210:06:08 02/27/12 (2)
- I think the answer is ? - Interstage Tranny 14:04:19 02/27/12 (1)
- I messed up, again - Tre' 16:07:42 02/27/12 (0)