Mike, do you have the black polypropylene driver (could be coated paper) or the aluminum driver? The AX150 is supposed to be poly (or paper), and the AX500 is supposed to be aluminum. But this is not always the case.
My parents have the larger 500 cabinet with the driver & x-over from the 150.
These (if I remember correctly) were an end of line run. Both subs were discontinued, but they had various parts left over from each. The result is what you see before you.
I beleive the sub goes a little deeper than the 150, but not as deep as the 500.
Hope this helps.
