The Eminence woofers used in the PL315are custom heavy-duty made for Yorkville only, the woofers are long discontinued.

I am offering one, 15" woofer from a Yorkville PL315 speaker in excellent working condition. The last photo shows the woofer listed for the PL315 on the parts list. I have a second woofer that does not work. If you want the bad speaker for free, double the shipping and I will send both of them to you.