NVS AUDIO 2012 Jeep Grand Cherokee SRT8 Build Full custom audio system.

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

Alpine pre

Alpine premium audio system speaker locations

The Premium Alpine System speaker system includes speakers in 10 locations. Each of the standard speakers is replaced with Alpine Premium speakers.

One 8.89 centimeter (3.5 inch) diameter speaker is installed in the center of the instrument panel under the defroster grille (1)

One 2.54 centimeter (1 inch) silk dome tweeter speaker is located in the mirror flag area of each front doors (2)

One 15.2 X 22.9 centimeter (6 X 9 inch) speaker is located in each front door (3)

One 16.5 centimeter (6.5 inch) diameter speaker is located in each rear door (4)

One 6.35 centimeter (2.5 inch) diameter speaker is installed in each of the D-Pillars (5)

One 20.3 centimeter (8 inch) subwoofer located in the passenger side quarter panel (6)

The Alpine speaker system also includes a 506 watt amplifier  (7)

 

For 2012

the audio was done by Harman Kardon and they did a heck of a job the factory system sounds great ! But lucky for us , some customers want better.

Harman Kardon premium audio system speaker locations 

Harman Kardon premium audio system speaker locations

The new 2012 Jeep Grand Cherokee SRT8® combines on-road refinement and performance with the ultimate Harman Kardon® Logic 7 Surround Sound System. With best-in-class playback precision and innovative GreenEdge® technology the new system provides the ultimate music listening experience. The Jeep Grand Cherokee SRT8 surround sound system includes 19 high-performance speakers in 14 locations and is designed to deliver twice the acoustical power output and sound reproduction.The system offers a 32-volt Tracking Power Supply (TPS

One 8.89 centimeter (3.5 inch) diameter speaker is installed in the center of the instrument panel under the defroster grille (1).

One 2.54 centimeter (1 inch) silk dome tweeter speaker is located in the mirror flag area of each front doors (2).

One 15.2 X 22.9 centimeter (6 X 9 inch) speaker is located in each front door (3).

One 8.89 centimeter (3.5 inch) diameter speaker is located in each front door (4).

One 2.54 centimeter (1 inch) silk dome tweeter speaker is located in each rear door (5).

One 16.5 centimeter (6.5 inch) diameter speaker is located in each rear door (6).

One 25.4 centimeter (10 inch) subwoofer located in the right side quarter panel (7)

One 8.89 centimeter (3.5 inch) diameter speaker is installed in each of the D-Pillars (8).

825-watt amplifier located in the left side quarter panel (9).

Rear surrounf right

 

To maintain the 7.3 Logic 7 surround sound true digital signal we used a Audison Bit one Processor.

We took output from the factory amp

Front Left

Front right

Center

Rear left

Rear Right

Rear Surround left

Subwoofer

We fed all 8 channels into the Bit One,

The next step is to assign outputs. The Bit One will ask you to determine fronts, rears, and subs. You can assign channel numbers and whether or not the front and rear speaker have passive crossovers between the mid and tweet. Once this is all done we  inserted the setup disc into your CD drive and turned the volume up to just before clipping using our oscilloscope .

The Bit One Processed, time aliened, set crossover points, complete I was able to start tuning. The Bit One gives you many features to get your system tuned in just right. First you have to determine if you use a full range, high-pass, low-pass or band-pass crossover. Then you set the crossover type: you can use either Linkwitz-Reiley or Butterworth type networks. Crossover frequency is highly adjustable. It is grouped into different frequency sets and then broken down further from there. Next you will need to decide on where you want your listening position to be set for the time delay. To set the delay simply measure all your distances and enter them for each speaker. The Bit One will set the delays automatically (there is also the ability to fine tune the delay in .02 milliseconds). In addition, there's a phase inversion button to invert the phase of any speaker as well as a left/right crossover link.

The equalizer is 31 band 1/3 octave e per output channel  that can be set for each individual channel or for linking the left/right respective channels. For This parts we used our RTA (Real Time Analyzer).

The speakers we chose where all Hertz Audio :-)   (My personal favorite)

165 XL Hi energy components 6.5 inch in the front doors.

4 inch in the center dash

165 XL Hi Energy components 6.5 inch in rear doors

4 inch rear surrounds

2 12 inch Hi Energy subwoofers

For amplification we used 

One mono - one 5 channel - and one 4 channel

All Hertz Audio HHDP1 - HDP4 - HDP5

Fitting all those amps and still making it look clean was a job and a half!