Well I guess I found the right place.About 12 years ago I built a pair of subs using 6 12"woofers in a line source.The cabinets were 2 layers thick 1'mdf.The build quality was no where near your 4-15 sub.Iused a pair of phaselinear d500amps.1kw per [email protected] ohms.What made the really sick was a...