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.

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