A little late on this but for future reference the Clarion DPX11500 was designed by Zeff. Zeff also created the Arc Audio 4k, which uses the same amp design, class GH, as the Clarion.
the subs are single four ohm coils. Kicker ZX300.1 will be a perfect match. you can get one from hifisoundconnection.com for 109.99. You also need a 8 ga wiring kit.
that sounds sweet. i would use Anderson power connectors along with pro audio multi pin connectors for rca and speaker wire. So that way you can have a fully removable console that comes off with two connectors.
well, if your meter is correct, here is the list of causes. bad solder on the terminals, broken tinsel leads, bad terminals, bad solder between the voice coil and the tinsel leads, coil rubbing in the gap, blown coil. easy fix - buy a dual 2 recone.