I have a Sony SE-VE315 satellite system which affords 100w per channel, and includes a base module with (2) 5" woofers, at 75w. I purchased years ago an Aiwa 60w 8" sub to compliment this systems predecesor. I've been using both woofers, and I'm wondering if I'm not getting all the quality in the base that I could be. I was thinking of purchasing a new 10" or 12" sub to replace one or both of the existing subs (and selling them or some such). Anywho, I have no idea whether this is a good idea or whether I'm chasing after something that I don't need or is out of my price range. Any input would be appreciated!