6F6G Amplifier

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sorenj07

  • Jr. Member
  • Posts: 62
6F6G Amplifier
« on: 10 Mar 2008, 01:24 am »
How does it look? I have the Z565's, PA774, and the tubes. I'm also considering using a single 6EM7 per channel, the high gain half direct-coupled to a concertina formed by the low gain/low Ra half, Williamson style.




I've got 8 Russian 6F6G types on hand, but am prepared to try new production 6V6's as well..

It's been suggested that I incorporate some 6SN7's as CF's direct coupled to the 6F6's, as the 6SL7's are a bit wimpy in the current department.  I'm exploring that option at the moment as well. 

JoshK

Re: 6F6G Amplifier
« Reply #1 on: 10 Mar 2008, 03:44 am »
If it were me, I'd put a CCS in the tail of the LTP if you go with the topology shown in the schematic. 


sorenj07

  • Jr. Member
  • Posts: 62
Re: 6F6G Amplifier
« Reply #2 on: 10 Mar 2008, 06:27 am »
That has been suggested as well, and would probably be very easy to implement. It'd let me use perfectly balanced plate resistors, right?

JoshK

Re: 6F6G Amplifier
« Reply #3 on: 10 Mar 2008, 11:53 am »
That has been suggested as well, and would probably be very easy to implement. It'd let me use perfectly balanced plate resistors, right?

Yep.