I also Dynamatted around the speaker and double dampened each door.
The pic of the amp was taken before cable management.
This is my '01 QX4 with some heavy audio modifications. New speakers all around with a 2x10" sub box. Cut on a C&C router accurate down to .001" so it's acoustically tuned, this box sounds perfect. Also the doors, tailgate, and hood are all dynamatted along with accumat above the headliner. I'm planning on sound damping the floor by December. This is the best sounding car I have ever heard and it looks clean! This is a sleeper for sure. Right now she has almost 200,000 miles on her and still runs great and looks good.
Audio Equipment
Pioneer AVIC-Z3 DVD/Nav Deck w/Bluetooth Setup
Pioneer GEX-P10XMT XM Tuner w/NavTraffic
Pioneer NDBC2 Backup Camera
Pioneer TSD-1602r Composite Speakers for the Rear Doors
JL Audio XR650-CSi Component Speakers for the Front
JL Audio 10w3v2 10" 600wRMS Subs
MTX TE404 400w Thunder Elite Amp for the Doors
MTX 600XD 600w Thunder Amp for the 2 subs
Dynamat Xtreme Sound Damping Material doubled for the doors,
body panels, tailgate, and hood.
Scosche Accumat Sound Damping Material above the Headliner
NYC Dashes Laser Cut Brushed Aluminum Dash Trim Kit