This was discussed some on this thread:
http://www5.head-fi.org/forums/showthread.php?t=54575
Which suggested something in the 3:1 to 5:1 range might be about right.
http://www5.head-fi.org/forums/showthread.php?t=54575
Which suggested something in the 3:1 to 5:1 range might be about right.






