Bought this from a friend of mine worked great in there car but when i installed into my mazda 3 2006 i barely hear anything. I mean i can hear little bass but whenever i turn up the music the bass doesnt go up. The bass and sound only goes up to a specific limit and it wont go up any more which the sound of the bass can only be heard if you put your head next to the subs.
And yes checked wires about 10 times already seemed to be all good
using factory bose HU with LOC and yes checked the wiring on here too.
2 12inch alpine type r in box
mono JL 1800watt amp
0 ga wiring