I recently upgraded the Audioholics Showcase System to include a slim line sub behind my 2nd row to fix a suckout at one of the seats. As a result, I no longer need 1 of my 2 Velodyne DD-15+ subs which was located midwall. I am still keeping and using my other DD-15+ corner loaded. The Velodyne DD-15+ is a great versatile sub with lots of output and tight bass and a great DSP interface with adjustable PEQ, HPF and LPF. The sub is in cherry finish and in perfect condition. I have all of the accessories (mic, cables, etc). It retails for $4,500. I will take $2,400, but prefer local pickup as I no longer have the original box. Here is the manufacturer page for more info: http://velodyne.com/subwoofers/digital-drive-plus-series/digital-drive-plus-15.html Here is my review: http://www.audioholics.com/subwoofer-reviews/velodyne-dd15