I have an HSU STF-2 in the front left corner of my carpeted-concrete basement (size: 13' (w) X 23' (l) X 8' (h)) and although I think its a great sub, I can't really "feel" the LFE from my seating position, which is 10-12' away. The front left corner is the best place for my sub: I've tried putting it in my listening position and I've walked around the room. In order to really "feel" anything, I really have to turn the gain up (almost 3/4) and then I feel like I'm overtaxing it, since it sometimes makes popping sounds when there are loud explosions, e.g. wall explosion in LOTR2. I'm starting to realize that the STF-2 alone is not powerful enough for my room size OR there's some sort of bass cancellation happening in my room. I wanna solve this, and here are possible solutions I've come up with: (1) buy a 2nd HSU STF-2 and place it in the right front corner (2) buy an SVS 25-31 PCi and place it in the right front corner (3) buy the Dayton 10" and place it in the right front corner (4) figure out a way to improve the LFE "feeling" from my current single STF-2 I'd love to go with options (1) or (2), but I've just recently spent a lot of money on HT gear and will have to wait 6-8 months before I make another hefty purchase. As for an immediate solution, I want to go with solution (3) because its a rather inexpensive idea. Question is: will I notice a considerable improvement if I add the Dayton to my set up? Or should I go with option (4) and how can I achieve this? By the way, my crossover on my Yammie is set to 80 Hz, and I find that works best. Also, I've ruled out the option of bass shakers for now. Thanks in advance for your suggestions.