Update, I replaced the amp in my SW-12 with the Parts Express 300W Bash amp. As you can see in the photo I had to add a filler to the opening and re cut it as the Bash is taller and narrower than the original. No problem if you have a jig saw and a woodworking router. The modification came out very well. On music the sub sounds great. Clean and tight. On Ht it is a little boomy. I am thinking about changing 2 of the resistors to get 6db bass boost @ 25-30Hz, War of the Worlds tried it out last night. I will work on room placement and crossover adj first. Anyone here have suggestion on a replacement driver and PR. Sub box volumn is 2.3 cu ft. Looking at the SW-12A and PR-12A from Gr Research. Any one here used them? Any other suggestions? If I cannot get the sound I am after I may replace the driver and PR. I am using RW-35's for the front RC-35 center, RW-5 in wall for surround sides and IW-150 in wall for rear surround. DTR 7.4 Integra for AV receiver. Thanks