New Posts  All Forums:Forum Nav:

Ground Channel?

post #1 of 2
8/6/05 at 3:31am
Thread Starter 
I would like to know what is the ground channel circuit used for. thanks.

One example is PPA Circuit. http://www.tangentsoft.net/audio/ppa...schematic8.pdf
Reply
post #2 of 2
8/6/05 at 4:53am
See the description on morsel's PPA and M³ pages, as well as my M³ page under "Tech highlights" for a brief discussion about the merit of a 3-channel topology (the 3rd channel is the ground channel).
http://elvencraft.com/ppa
http://elvencraft.com/mmm
http://www.amb.org/audio/mmm

Using the RMAA test, an obvious benefit of this topology is superior stereo crosstalk performance compared to a 2-channel topology (even those which are "dual mono" but which must nevertheless share a common signal ground). However the actual benefit goes beyond reduced crosstalk. A unpolluted ground is essential for a clean signal, because the signal is referenced to ground.
Reply
New Posts  All Forums:Forum Nav:
  Return Home