dennisopk
Head-Fier
Just to confirm,the alps pot, does it have the on/off switch like the stock.
Just to confirm,the alps pot, does it have the on/off switch like the stock.
I just noticed thea when listening to my Walnut with my Monk Plus and the volume to zero I get this background noise. It sounds like a constant RF interference, but as soon as I plug it in to charge it goes away. I'm guessing it's the power supply cap.
Interestingly LM6172 works perfectly in my all Silmic + Rubycon ZL walnut, but when I had only changed the power cap to Panasonic FM and the rest of walnut stock the LM6172 wouldn't work, would oscillate. And the AD826 which worked fine in the stock walnut, oscillates in my all Silmic walnut. So it seems the walnut is very finicky. Not an ideal test bed really.
did you try bypassing opamp power pins to cure oscillation, high speed opamps love bypassing..
I have a spare LM4562 lying around, would it do any better than stock in the Walnut..?
So these should be going back on sale here, pretty soon?
I am anxious to get an order placed.
Any idea who gets things shipped the fastest?
So these should be going back on sale here, pretty soon?
I am anxious to get an order placed.
Any idea who gets things shipped the fastest?
made following changes:
1. replaced the default piece of junk 1000u power supply cap with a Nippon Chemi-con LXY 25V/1000u cap
2. replaced the 2x 10V/47u SilmicII caps with NCC LXF 10V/1000u caps, because I read on this forum that replacing output coupling caps with bigger capacitance will move the -3db cutoff frequency further lower (which should theoretically improve Walnut's RMAA chart bass roll-off)
however, my ears and RMAA measurements all indicate no improvement on the bass roll-off
so this is just for lolz i guess...
p.s. the through-hole design makes it really hard to remove the default caps...