Have a used Kove Armageddon Z 15" sub. It is Dual 4 ohm. I bought it not working. I took the dustcap off and realized that the connection where the tinsel leads and the leads from the former meet werent making a good connection. I resoldered them and coated them with CA glue. I then put a used RD Audio dustcap back on. I played it with 100 watts free air and it sounded fine, Should be a great sub for someone out there. This isnt the Treo copy sub. This one has a 3" coil not a 4". Motor is right around the same size as a TC-9 motor with 1" slugs.
Here are some pics
$100 shipped OBO
Here are some pics
$100 shipped OBO