I currently own the SVS PB10 subwoofer and I think I need a worthwhile upgrade. I have my sights on two subwoofers right now. The Epik Valor and the A5-350. As I said in the other thread, if I can get a subwoofer that will give me twice the performance of a single PB10 ISD, I'll be extremely happy.
And if it's musical performance is a worthwhile step up then it's icing on the cake. My only other requirement is that it must play back lower than the PB10 (naturally tuned to 17.5 hz). The only thing that is bugging me is the amount of compression at high output levels. It just seems to run out of steam early on. Perhaps my unit is defective, I'm not sure, but the output levels don't seem that high at all, and this is my first subwoofer that I've ever owned.
The limiter is so aggressive that the bass actually gets softer as it's limits are reached. And the levels I'm talking about are way before reference level (calibrated with SPL meter to 75 dB's and 73-74 dB for sub). So if I can get an idea of the performance upgrade I'll get with either one of these subwoofers it will make my decision much easier to make.