TerryJ wrote:
I tried a 6SN7 for the 6SL7. Not much difference when feeding with CD player
other than having to crank the volume control up. I will try the other
options today.
Just swapping the 6SL7 for 6SN7 means that the anode dc voltage may be
wrong ( too low )
6SN7 input tube but it will still work because V1 does not have to make
a huge output signal.
Maybe using a 50k input pot and 0.47uF input coupling cap will reduce
the input noise
and improve the HF a bit.
Patrick Turner.
"Bob H." wrote in message
ps.com...
TerryJ wrote:
Opinions?
http://home.comcast.net/~suptjud/6BX7AMP.JPG
It sounds fine with both 6BX7s working or with either removed. I have no
way
to measure distortion except the scope and my ears.
I'd be interested in how it sounds substituting a sn7 for the sl7 and
removing the feedback loop, or just directly feeding the sn7 splitter,
bypassing the sl7 stage.
Bob H.