May be selling my pair of 12" Titanic MKIIIs soon. PM me if interested.
They are from my larger system I'm downsizing/remodeling rooms and moving the system to a much smaller room. I tried sealed and ported. Amazing effortless deep bass at low volume either way. These are the last of the good ones before the new Ultimax. See specs. Currently mounted in a pair of 3.0 cu ft boxes with a 14.5" long 4.0" diameter. Located in Northern California. Buy the woofers and I'll give you the 1" thick MDF custom made boxes, super braced, ridiculously solid. My loss your gain.