Hi, I have an imported 15" Dainty Heavy Magnet and Heavy Duty speaker with me. I can make a bass cabinet out of it. I use their 12" speakers in my 2x12 cabinet and it's pretty good. Beats all this small Marshalls or anything. You can check it up in my jam room and know it for sure. I can make a standard 1x15 bass cabinet or something customized to your specs. Contact me through mail or mobile if you know me, else PM me for more details. The speaker is brand new in the box, so no used or second hand thingy. Bought it for somebody else but unfortunately he couldn't pick it up.