Written by mudbog144 from Heflin , La on May 1, 2012i have had 2 of these for about 3 monthes , they are in a custom box i built it is ported. 7.5 cubic foot tuned around 26 hz , these subs are very voilent it will blow away my 2 15 L7 i have them wired a 2 ohms in series on a kicker zx 1500.1 , @ 1.6 volts it reads 1782 rms watts @ 2ohms!,these subs read 171.6 on a db reader in a 4 door truck it permently bowed out my roof and shatterd my back glass and cracked both of my rear side glasses ,it was playing on my level maxed out and read 171.6 db then shaterd my glasses on the low note ! they handle abuse well ,,for the money you WILL NOT FIND A BETTER SUB i have had over 40 high end subs this is the best one so far !