We bought a house and in it's basement we've 5 speakers installed on ceiling already. The seller said it's Polk stereo, but I don't know the detail specification on it. I just bought the Denon AVR-790 and want to buy a subwoofer for the basement setting. Is it an overkill if I buy PA-120 or A2-300 since the subwoofer will be powerful but the remaining other 5 speakers will be not to it's par. On the same note, should I stick with PA-120 given my situation or spend few $$ and get A2-300. I understand that if I'd other 5 speakers a lot better ones, it would definitely make sense for A2-300, but wasn't sure in my current situation if it's worth to pay the extra bucks. Thanks for ur suggestions.