Photo 2/26 | 2008 Chevy Hhr Audio Buildup mtx Audio Products | With the MTX audio products set on the cargo area of the HHR, we began to get excited thinking of the awesome tunes we would soon have in the Chevy.
Photo 3/26 | 2008 Chevy Hhr Audio Buildup center Dash | After arriving at the Al & Ed's Autosound in Costa Mesa, California, installer Sam Habib began the install by removing the center dash surround and pulling free the factory single-CD head unit.
Photo 4/26 | 2008 Chevy Hhr Audio Buildup pioneer Unit Vs Stock | Side by side, there really isn't much comparison between the Pioneer unit and the stock radio. The Pioneer has the ability to play DVDs, MP3s, it has DVD-based navigation, and is more powerful than the factory unit.
Photo 5/26 | 2008 Chevy Hhr Audio Buildup pioneer Head Unit | Sam simply ran the RCA cables from the back of the radio to behind the dash and then connected the Pioneer Avic-D2 with a GM-specific wire harness and mounted it with a GM installation kit.
Photo 6/26 | 2008 Chevy Hhr Audio Buildup aux Input Cable | The aux input cable was run behind the dash into the glovebox for easy access and convenience.
Photo 7/26 | 2008 Chevy Hhr Audio Buildup dynamat | After removing each of the four door panels, the small and cheap factory speakers were removed then each door received a sheet of Dynamat to keep the tunes in the HHR and keep them at their best fidelity.
Photo 8/26 | 2008 Chevy Hhr Audio Buildup speaker Wire | Speaker wire was run from each MTX 6 1/2-inch door speaker to the MTX amp and...
Photo 9/26 | 2008 Chevy Hhr Audio Buildup mtx Audio Speaker | ...then the speakers were installed in each door.
Photo 10/26 | 2008 Chevy Hhr Audio Buildup door Panel | With the speakers in place, each door panel was reinstalled.
Photo 11/26 | 2008 Chevy Hhr Audio Buildup mtx Audio Amp | Moving to the MTX amps, both the 504X four-channel amp and the 300XD sub amp were test-fitted under both front seats. The amps had plenty of room and each seat was removed to gain easier access to mount and wire the amps.
Photo 12/26 | 2008 Chevy Hhr Audio Buildup wires Connected | The Streetwires positive and ground wires were run to each amp and then the speaker wires and head unit RCA cables connected.
Photo 13/26 | 2008 Chevy Hhr Audio Buildup mtx Amps Secured | At this point, the amps were secured to the floorboard and the seats reinstalled, along with the rubber floor mats. With the amps in place, there was no loss in foot room for the rear passengers.
Photo 14/26 | 2008 Chevy Hhr Audio Buildup mtx Sub Amp | Providing added flexibility, the MTX 300XD sub amp included a bass knob to give the sub extra juice. This knob was mounted under the dash on the driver side.
Photo 15/26 | 2008 Chevy Hhr Audio Buildup 4 Gauge Streetwire | The battery is located on the passenger side in the rear cargo hold area, and once we found it, Sam wired the Streetwires 4-gauge wire to the battery and then secured the ground cable to the body.
Photo 16/26 | 2008 Chevy Hhr Audio Buildup rear Cargo Area | Here you can see the middle level of the rear cargo area cover. It was removed to gain access to the spare tire.
Photo 17/26 | 2008 Chevy Hhr Audio Buildup spare Tire | Sam loosened the spare tire mount and then pulled the spare tire free.
Photo 18/26 | 2008 Chevy Hhr Audio Buildup sub Box Measurements | The stud was then cut off and the sub box measurements taken. As you can see, there was plenty of room for a sub box to be built in the well.
Photo 19/26 | 2008 Chevy Hhr Audio Buildup mtx Audio Subwoofer | We then opened up the MTX TS5510-22 subwoofer box and got to check out the square sub. This sub is rated at 225-450 watts RMS and needed 1 cubic foot of air space to achieve optimum sound reproduction. With a 5lb magnet, this sub meant business.
Photo 20/26 | 2008 Chevy Hhr Audio Buildup square Sub Box | Sam then moved to the table saw and created this square sub box for the MTX sub. An upper panel was built to support the top layer that would later be covered in suede and cut to fit the cargo area perfectly.
Photo 21/26 | 2008 Chevy Hhr Audio Buildup particle Board | This top panel was cut out of particle board and after getting the exact measurements locked in, Sam covered it in black suede. Also, notice the oval cutout around the square sub mount. This piece will be wrapped in red suede and the overall look with be clean and custom.
Photo 22/26 | 2008 Chevy Hhr Audio Buildup red Black Suede | With the top panel removed and wrapped in black suede, the bottom portion was wrapped in red and the MTX Thunder Square sub wired and mounted.
Photo 23/26 | 2008 Chevy Hhr Audio Buildup top Panel | Then the exact-fit top panel was laid over the top and the box came together
Photo 24/26 | 2008 Chevy Hhr Audio Buildup mtx Thunder Square Sub | Check out how great and yet simple the box looked. It was now time to fire up the HHR and listen to some tunes. The Chevy sounded great and the highs were balanced with bass pounding from the MTX Thunder Square sub.
Photo 25/26 | 2008 Chevy Hhr Audio Buildup plastic Cargo Panel | Remember, our goal was to keep the cargo area functional and Sam was able to lay the plastic cargo panel over the sub box to keep it protected. At shows or events, we can simply pull the panel out and have a custom box ready to be seen.
Photo 26/26 | 2008 Chevy Hhr Audio Buildup hidden Sub | Would-be thieves or groceries will never know a cool sub box and MTX square sub is under the plastic panel.