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In Reply to: RE: my sourse puts out about 2V posted by airtime on June 27, 2014 at 16:41:20
Most amps need less than 2 V. of I/P to be driven to full power O/P. Therefore, a passive control setup is fine, IF the cables between the passive center and power amp are short and low capacitance. That means unshielded and braided. Someone, like a NYC apt. dweller, who lives in a cesspit of EMI/RFI rates to do poorly trying unshielded wiring.
"One man's meat is another man's poison." Aesop
Eli D.
Follow Ups:
It's a question of layout as Eli says. Me, I have my 2 active stages in the amp and the DAC right next to it - inches of cable. And the volume control is digital in my Mac Mini software. I really don't want to put any more stuff in the signal path than I literally have to. Two stages, transformer coupled, no cathode bypass caps. All polypropylene caps in the PSU. About as simple as it gets, but the filament supplies and the power supply are very elaborate. Plenty of chokes, glow tubes, shunt regs etc etc. and the solid state stuff in the DAC runs off batteries.
I'm using a high end Radioshack 100k alps pot with GREAT!! sucess. I ordered and tried a IR remote 47k alps board. For some reason it didn't sound that good. Rolled off and muted dynamics.
It's back to the $5 RS pot.
I know a good thing when I hear it.
Maybe I'll cobble a way to use the IR board to drive the RS alps pot?????
charles
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