Jiggawatts

Oh btw all work, box building and wiring i do on my own, i dont test or have a meter i just play with ideas and go to the shows where i see if i've improved or not. Will load pics soon.

Hey all i'm from cape town, south africa, i compete in spl but like my music loud! Use 2 starsound 12' 5212 subs and 2 starsound d7000's for spl (150.2 with 1 amp 151.73 with 2 on termlab) and (at the moment) 1 15' targa street dual 4 sub (800rms per coil) for everyday running off 1 starsound ssad-7000 amp (3000rms @ 1ohm 14v) i'm lookin to get another 15' and try out bassrace but have no idea how to tune box, do i tune close to car resonant frequency or do i tune lower when running open door or closed doors? My car is an opel kadett aka vauxhall hatch 4 door 91 model (t car gsi shape) current number with 1 15' is 140-141 average over 1 min open door using 43hz song. When the song hits a higher frequency the number increases, any help would be appreciated! Btw great forum! Respect!