blackout1000

Two completely different cars...two completely different fits. go to tirerack.com and use the viewer to see the wheels on the Edge. Those mustang wheels will stick out like dumbo ears and you cant have different front and rear sizes on vehicles like the Edge, especially if it is AWD. if your not gonna do it right, dont do it at all. save your dough til you can buy the right ones!

Youre S.O.L. on the "bass boost". The louder you turn it up, the less bass you get proportionally to the volume of the 4 door speakers. Its known as "roll off". Its a factory crap stereo trick to make it sound better when at low to middle volume but less bass when you crank it so the inevitable distortion that comes in doesnt ruin your factory speakers. You can go with an aftermarket unit like a JL Cleansweep or MTX Re-Q but its just not the same as a clean aftermarket head unit signal. Dont care what anyone says, youre only as good as your weakest link with the factory stereo...you fix the amplifier power, now your stock sub is holding you back...you replace the sub now your speakers are the weak point, etc. etc.... As for the vents under your seats, those arent the seat heaters...those are ducts to route more heat or AC to the back seat passengers the same way the front passengers have ducts for floor heat near the center stack. you could pretty easily place the amp rack holding your amp so it blocked the air from blowing on the amp itself, not much different from putting your hand in front of a vent on the dashboard to block airflow. Id be weary of how effective putting a 10" sub in the factory box is. 10" subs generally need about .6-.8 cu ft of enclosure space to work well unless specifically designed and stated by the manufacturer to go any smaller. That factory enclosure is about .3-.35 on a good day Id bet. An aftermarket 8" with a good power rating with an amp that matches the RMS rating would be a good start. Ive got a new JL 8W3v3 that i tried in the factory box that sounded, well, OK. but not great by any stretch. The enclosure just isnt rigid enough for better aftermarket 8" subs that weight 8-10 lbs rated at around 250w RMS like the JL. I pretty much expected this though and Im building a custom enclosure now. I plan to post pics later. MKX2007, be careful how much power you push to that 10" with that little airspace...your RMS power handling is MUCH lower (than alpine rates it) being in that much smaller enclosure than recommended. Your sub is basically starved for air to use as a spring.