I finally got around to fixing my $10.00 ebay sub that was damaged to a point. The basket was bent ever so slightly and the dust cap came off. Other then that it's all good.
I have a box in the rafters in the garage that I'll put it in along side the XMAX 10. Seperate chambers of course.
"ZPA's will have the same sound essentially as you get from the MS, they just feature a bigger shinier set of balls."