Thanks everyone for such a great site!

I upgraded my system again but this time ran an amp. I put the amp under the passenger seat but I am perplexed as to how to mount the thing so it doesn't move around. Some of the space under the seat is taken by this silver looking box about the size of a box of cigarettes. But the amp fits fine in the remaining space, it just rocks a bit meaning that is it not flush to the bottom of the metal pan.


I used a Kenwood KAC-8405 amp.
Polk Audio db5251 5-1/4" Component mounted on home made speaker adapter plates.
Polk Audio db 691 6"x9" 3-way for the rears.
I used to run the Infinity Reference but I didn't care for the quality of the sound and really enjoyed the Polks that I got for the house so I figured I would put them in the car too.

 

That box is the YAW sensor and can not be moved or it will severely affect the DSC and a few other systems.


May be use some double sided tape or screw it down.


I used a Kenwood KAC-8405 amp.
Polk Audio db5251 5-1/4" Component mounted on home made speaker adapter plates.
Polk Audio db 691 6"x9" 3-way for the rears.
I used to run the Infinity Reference but I didn't care for the quality of the sound and really enjoyed the Polks that I got for the house so I figured I would put them in the car too.[/quote]

 

I was accessing that space recently for an amp. As prior poster said, the small box is the yaw sensor. Critical for DSC, so don't mess with its mounting or wiring.

Sounds like you don't have sat radio. I do, and it fills most of that remaining box. If you don't, then variously you could two sided tape the amp down; as a variant get the wide industrial velcro (about 2" wide) and use that, particularly if the surfaces are a bit uneven; or fashion a strap from something like heater duct galvanized strapping (about an inch wide min. width), or even plumber's galvanized metal tape strap, and then screw it down with a couple of sheet metal screws into the car body floor.

For reference if it helps, since my underseat box was full with a sat receiver, I found a small vertical space up under the dash (2010 MCS in my case) just to the right of the HVAC air filter and up and to the rear (behind) the glove box area. I slid the small Alpine amplifier used in the base Boost Mini retrofit amp and speaker kit up into there--positioned vertically to be clear. Completely out of sight, secure, all wire connections face downward and are thus visible (from under dash), easy wiring w/ no under carpet or door jamb stuff. Ran the (fused) positive amp lead out to the battery right near the same area through the firewall rubber grommet that is behind the battery when you take it out of its tray location.