I picked up a Cerwin Vega HT-10D passive sub-woofer for $20. It's in great condition and I had to have it if for nothing else novelty. I know nothing about the workings of a passive other than the basic connections from the L/R main. Has anyone used this or have any experience with it? Would it be worth incorporating into my HT system? I am using an el cheapo Sony powered sub running from my Denon 3802 now. My main speakers are a set of AR-58S' that take the Denon's AV signal through a pioneer C/M-90 combo (200 watts @ 8 ohm) and the bass is great as is. Would the Cerwin Vega's crossover allow for the AR's to work properly?