I can't decided if I want to use the 12AT7 or the 6SL7 as my phase splitter in my new 6V6 push pull parallel amp project. Any input as to likes/dislikes and what others have tried and prefer would be helpful.
Thanks
Thanks
One to feed both half's of a push pull amp not sure the names of them, longtail maybe, one half using the plate the other half using the cathode.
Either of them have gobs of gain - that won't be an issue, but of the two, electrically the at7 better suits what you (sort of) describe you want. It has far more current capability than the sl7 and so will provide a firmer drive to the 6V6 grid.
Either a voltage amp to cathodyne or a ltp topology will work. If you choose the first, watch your heater to cathode voltages.
Either a voltage amp to cathodyne or a ltp topology will work. If you choose the first, watch your heater to cathode voltages.
If you use the 6V6s in pentode or UL, the 6SL7 should work fine. If they are trioded, the 6SL7 may struggle a tad. I've used 6SL7 to drive 7591s UL class A and am happy with the results. Check Eli's "El Cheapo" for a 12AT7 LTP and I think there's a 6SL7 version of Poinz' "Music Machine." Both are well regarded.
another way (I'm doing this at the moment...) is to use the 6sl7 and put a source follower between it and the grids of the 6V6.
You get:
- Classic octal good looks (matter of opinion)
- Good gain
- All the grid drive you could ever need.
Take a look at the 6V6 Baby Huey design as a relevant example of this topology
You get:
- Classic octal good looks (matter of opinion)
- Good gain
- All the grid drive you could ever need.
Take a look at the 6V6 Baby Huey design as a relevant example of this topology
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