down firing sub in car trunk?

[waltham415 0]

As always, I have been running around with ideas for the time when I have the money to actually do something with them. I have a large trunk, however with an extremely small opening to get into the trunk, and so I have always had to restrict the size of any box i intend to build so that i can sqeeze it past that opening.

So for my next idea... how would it sound to have a single downfiring 15" ssd in a sealed box? For now it would be recieving only 500 watts rms untill I could upgrade. It would be raised 4 inches off of a wooden base, in a 18"X18"X10.75" box (interior dimensions). I have never seen this done in a trunk so i'm curious about its effects. My goals are a "clean N loud" type of system where its mainly for sound quality but can get loud if I wanted it to.

Other info

car's a 2000 mercury sable

sub amp is a alpine 500wrms monoblock

I currently have 2 10" alpine type s'.

This is just an idea im throwing around so i would appriciate any ideas, comments, critisism. thanks in advance

Alex

[SpeakerBoy 64]

Why downfiring?

[waltham415 0]

Well like i said i'm just throwing around ideas. I recently read an artical saying that downfiring into a solid surface provides a "load" for the speaker and increases the output of the sub over just a regular sealed box. I know it's done in home systems alot so I thought it might work for a car also. The box should be relitvely easy to build also. Has anyone heard of this done before in a car, and does anyone know any more about this "load" idea?

[KU40 173]

I did a downfiring setup in my car once. But I only got to hear it twice before somebody stole it, so I can't give a really good comparison. I didn't notice any problems with it, though. I'm sure it'll be just fine.

[swift 501]

I had two 15in Diamond M3's downfiring in the truck of my Lincoln Mark8. I had the spare tire and everything removed and the subs fired down into the spare tire well. The box was a large sealed setup and it hit HARD!! I wish I had video of that car but that was 6-8 years ago. It was very impressive and it use to shock people how hard and clean it hit. I would love to do another setup like that with some SSA's or Sundowns.

[slim2fattycake 85]

You don't want SQ. face it up instead of down. you'll get more output.

[swift 501]

You don't want SQ. face it up instead of down. you'll get more output.

I hit 149-150 at 40hz on the dash with music on that setup.

[slim2fattycake 85]

hmm, i'd like to see that.