Set the Bass to Sub only
, never Both (Main+Sub)
that takes too much of the LFE away from your sub and gives it to your front L/R.
and set all
speakers to small, regardless how big you "think" they are.
Setting your front towers to Large also robs your sub of LFE it would otherwise get
if you try setting all speakers to small.
Trust me,dont ask why, just try it.
on the Sub itself set the Sub volume to about half, crossover to max.
If its still not enough bass, set the sub level on the AVR +4 or 5,
...still not enough...NOW its ok to turn the volume on your sub up.
Still not good enough? What did the YPOA set your speaker crossovers at? I manually corrected all mine to 80hz
are you plugging the RCA jack into the Sub out, or into the mulit-channel input?
...dont laugh, many have done that