For 2012 Jeep total redesigned the audio system in the SRT8 Jeep grand Cherokee. And we took in one for a full custom audio build involving fiber glass, welded all metal amp rack, all wiring is Audson connection Pro series, STP sound proofing throughout the whole suv, etc..
In 2011 the SRT8 audio was done by Alpine
Alpine premium audio system
Rear surrounf right
All Hertz Audio HHDP1 - HDP4 - HDP5