FREE to a good home: Athena AS-P400 Subwoofer.
From memory, one of the parts in the amp plate needed repair - beyond my capabilities and not cost effective for me to fix. If you want some spare parts, know a decent electronics repairer or perhaps just like to tinker, then this one is for you.
Box itself has some cosmetic damage but the speaker cone looks to be in okay condition. BYO power cable - standard IEC?
Here is an old review to give you an idea of its capabilities:
Pickup in Wellington preferred as bulky and no original packaging.
PM me if you are interested.