I'm driving it with a Kenwwod VR-507 with the receiver LFE out connected to the sub's line in. - sub is corner loaded - Even though I'm not using speaker level inputs, the sub crossover is set to max (120 Hz) as it makes a difference for this sub. Receiver crossover I believe is 80 or 100hz and is fixed. - mains set to small - no calibration done yet, no bass boost - room size 12 x 14 What volume setting do you have on your sub? For me I have to turn it up to at least 75% for decent HT bass. This is somewhat dissapointing as I was hoping for more punch than this.