I purchased 16 of the JBL 12" sub woofers during the Best Buy Black Friday Sale last year. Finally getting around to using some of them. I am building two enclosures which will house two drivers each. I needed some bass to go along with the Volt-10's I just hung on my shop walls. Not looking for anything killer, curious as to how these will work, especially where they will be mounted, very high up on a wall between the Volt-10's. Going to have to clean off the top of the center three cabinets, that is where I plan on putting these enclosures.