i have an athena p-400 (10") sub right now and it just isnt cutting it in my large 24x24 room. I like allot of base and was thinking about getting the velodyne cht-12 (12") or the velodyne cht-15 (15"). I'm worried that the cht-15 wont be as good for music as the cht-12, is this true? And do you have any better sudjestions for a sub under $800 that compares to velodyne. Thanks.