Up for sale is my custom built Tuba HT sub woofer. It uses the Dayton Audio 15" driver, and is built out of 1/2" MDF (3 whole sheets). It has a black ash vinyl veneer that wraps across the top and side, the other three sides are covered in a quality grill mesh. The size is 30"x37"x38", so make sure this fits through your door.
Pics can been seen here: http://imgur.com/a/3PC2M
This is the absolutely loudest and deepest sub you will ever hear (without spending $10K) and it also pairs well with any other horn loaded speakers. If you don't know about this, please check out http://www.billfitzmaurice.com/THT.html
I'm asking $650 for the sub, you will have to supply your own amp. I have been running it off a 75 watt(my larger amp died) plate amp recently and it will still rattle your insides. I recommend an amp somewhere in the 200-500 watt range.
This is located in Elmhurst IL, a western suburb of Chicago. It is pick up only and is very heavy, so bring a few friends to help. If you have any questions, please fee free to ask.
Thanks
Mike