[taylor]

I was reading over the CMoy diagrams at tangents site. He talks about replacing R3 with a higher value to decrease gain. It seemed to go between 1kohm and 5kohm. Do you think it would be a good idea to replace R3 with a small 5k potentiometer, tune the gain, then mount it in the box? Or should I jsut buy a few different resistors for it, i.e. 11 to build it then swap it our with a gain of 3 or 4 for my MDR-V6s?

 

[till]

I think you should try different resistors and settle with the value you like best. A potentiometer would IMHO cause problems because it introduces noise, and besides, you need one for each channel, and to match their settings closely might prove difficult.

 

[ProFingerSk8er]

this would be very intersting, there are lots of pots designed for audio use, those pots with dual channel should work just fine.
however just like till said, a pot would most likely add noise

 

[taylor]

You could use a dual pot for the gain, and I think linear taper would be preferable.

But resistors are just so cheap that I can afford to try 3 different ones.

 

[iWeasel410]

I recently made a cmoy with my R3 being 2.4k (gain of 5) to run my v6's and I also put a panasonic potentiometer on it and it sounds great although higher volumes distort it (but you really don't need them to be anywhere near THAT loud

). IMO, I don't think you need a gain anywhere over 5 for these headphones.

 

[taylor]

Thanks, i'll use the 2.4k then.