Oz audio manufactures the best performing audio products on the planet. in fact, we are the only company to ever achieve a perfect sound quality score through the international auto sound competition association (iasca). worldwide, we have a track record of winning 98% of all competitions, a feat no other manufacturer can claim. come join the revolution. bring your audio listening experience to another world oz matrix elite 10" subwoofer award winning 143db sub, dual voice coil 2 or 4 ohm,...