On the back of my subwoofer, I just noticed that there is a switch called 'crossover slope switch', which can be set to either -12dB or -24dB. Which should I keep it too. If you need any info on my theater it's as follows: Integra DTR 5.3 receiver kenwood 10" subwoofer A room that measures to be about 12.5'x14'( not too big) Also, what should I set the crossover on my receiver to be? 80hz, 100hz, or 120hz? remember, i have a 10" sub.