Hi all,
Yesterday, I swapped out the 6J5 cathode follower that is my line stage for a push-pull stage based on a Schmidt phase splitter that drives cheap Edcor line transformers(see below and here) .
Well, it worked - sort of - but there is literally no bass. I bought the Edcors to try something like this as a proof of concept. Yes, they're cheap, but they're only driving my amp. Other than the transformers, is there anything that I might have done to cause this?
Could it be the highish Rp of the 6SN7? Would a 6BL7 be a better choice?
thx,
pete
Yesterday, I swapped out the 6J5 cathode follower that is my line stage for a push-pull stage based on a Schmidt phase splitter that drives cheap Edcor line transformers(see below and here) .
Well, it worked - sort of - but there is literally no bass. I bought the Edcors to try something like this as a proof of concept. Yes, they're cheap, but they're only driving my amp. Other than the transformers, is there anything that I might have done to cause this?
Could it be the highish Rp of the 6SN7? Would a 6BL7 be a better choice?
thx,
pete
An externally hosted image should be here but it was not working when we last tested it.
Geek said:
Yes - wonder - stated specs: 20-30k +/-.5dB ...sounded like a 1st order x-over had been inserted@~200Hz
Current sink needed (see thread below).
Proper phase splitter (see same thread below).
thanks for the input
compact amp thread
ps - got some semblance of bass by upping current sink to 20mA.
pg
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