So, on my weekly drive-through at the local thrift shops, I noticed this sitting there all by itself:

Onkyo 320X powered subwoofer! HA! And, since it wasn't "tested" and didn't have a sticker on it, the manager gave it to me for a song! Not sure if I'm going to use it yet, but I plugged it into my cab and WOW, it beats the hell out of the 4" sub with the 1.5" magnet that I had in there! World Class Bowling was AWESOME!
If I do use it, I'm going to paint it arcade black and put an external jack on the arcade cab for it.
AJ