2015 GMC Sierra system upgraded in Philadelphia
We added 6.5 Hertz Mille componets in the front doors, HCX165.4 coxials in the front doors.
We installed Audison Bit-0ne processor with Audison LRX 4.125 and a Audison LRX 1X750
With a JL audio stealth box 2-10TW3 subs under the rear seat. Had an amazing sound and completely stealth.
Brought to you by Highend car stereo