I recently bought a Onkyo TX-SR501 Receiver and hooked it up to my KLH 9250B floor standing speakers. They have a 12" woofer and are 250watts. ( I know they aren't the best speakers, but I got an incredible deal on them) I'm still saving up for a good subwoofer so I'd like these speakers to put out some decent bass, but they put out very little bass. I have the crossover set to the lowest setting on my receiver 60hz. I've adjusted everything i can think of but nothing seems to work. I assume it puts out little bass due to the crossover being 60, is there anything I can do to get more bass from these speakers, or is the problem that they are underpowered? Thanks in advance.