DLS ca 41 power amp in front seat .
under carpet + sound proofing , cover your tyre sound ,road sound & rain noise sound ,low cost ...
customize subwoofer box & side pillar custom ,. focus front sound stage audio in the car ,like live home theater system , ribbon tweeter up to 35k hz fqc ,dls ultimate pro 2.5 hi mid .vifa component speaker system , active plus passive crossover professional sound setting ......