by solderblob Mon Jun 18, 2018 11:40 am
Just an update. I talked to Arn at Goldpoint and he suggested 25k Ohms as the best overall choice so that's what I went with. BTW, Arn is very helpful and answers his phone or returns calls.
The short story is that it's a great attenuator and sounds amazing. 24 steps are plenty and normal listening is with the knob right around 12:00 o'clock.
The longer story is that I first wired it up with all the grounds connected together. Don't ask why, but I figured grounds are ground...So when I put it in my system, there was no bass, no dynamics, and the channel balance was off. I looked at how I had wired my old attenuator and it was the same with all in/out grounds connected to both grounds of the attenuator. And I had used that setup for years, occasionally experiencing some channel balance issues which I had blamed on the crappy attenuator switch/wiper or my interconnects. etc.
I couldn't find any info anywhere on how to deal with wiring the grounds but yesterday I finally went ahead and separated the grounds to each respective channel and voila', it worked. So I graded myself a dumbass for wiring it wrong but a genius for fixing the mistake!
So now my system with the VTA MkIII octal mod is sounding dynamic, detailed, and musical with great bass. Listening to my record collection again...
dave