SOLD I've built myself an infinite baffle subwoofer so now my baby must go. This an Acoustic Elegance 15" AV15 subwoofer with two 18" passive radiators powered by a 500 watt plate amp. It is the new dual spider design. The enclosure sits on 4 black chrome spikes which have hardwood floor protectors as well as the traditional spikes for carpet. I'm selling this subwoofer locally in the Seattle area. I'm asking $550.00. This image shows the old AV15 driver which was recently replaced with the new dual spider version, the appearance is exactly the same except the aluminum cone has the new AE logo on it.