Ya, they're only in a sealed box now since i got out of the spl scene and wanted some tighter bass....in my old car i used to have them in a 6cu. foot slot ported box with about 1200w on em....Hit somewhere around 145.6 dbs i think....

But times are changing as are my interests...i like speed now and the extra weight doesnt help....they could be up for sale if anyones interested.