Hi everybody.
i bought a JBL Cs 1214 30 Cm 1000W Subwoofer and an amplificater called Sierra Spiral F90 520w. i am also planning to add a pair of speakers ex. pioneer 440watts.
is it ok to us them together.
my car is Opel(vauxhall) Vectra A 94' model its sedan. i will crete a cabin for my...