Chaos, I think you might have designs that date back 12+ years. You may even have the 500 that pre-dates the v2. That's the one with the brick wall filter on the DSP and an old amp. The v4 is a completely new beast. You will think you've died and gone to heaven when you hear it. Yours sounds like garbage compared to the new. Trade it all in. You know about the trade-in program?

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated