For HT, 80hz crossover is best and what THX recommends. This is the point where LFE is non directional, meaning you can't determine where it is coming from... Now, music some people like to use 60hz. If your receiver allows you to set seperate crossover settings for each speaker, you could try bumping down the left/right mains to 60. My Denon 2805 only allows for one setting for all speakers, so 80 is best for all situations.
Have you tried flipping the phase switch to see if the base gets a little better?
When watching movies with lowww LFE scenes like the Darla Tap Scene in Nemo on the Aquirium, or when the Whale is telling Darla and Nemo to "Let gooooo" doesn't the 500 blow you away?
Again, unless you listen to Jazz, Rap, R&B, Country, etc with lowwww base, you most likely won't hear much from many music genre's.
If you have any Styx CD's try the song Renegade at the very beginning.
