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art
02-17-2008, 01:50 PM
hello all i am going to build a custom box for my alero. it will be 2 boxes formed to the bottom of the trunk in glass and wood for the top. they will be about 4 cubic feet with 2 4" ports each. my problem is i dont know where to place my subs and ports so it will be loudest for competition. i know it was pretty loud with the subs facing the back and the ports on the opposite side of the box facing into the car. but i read that the ports need to be facing the same way as the subs. i am just plain confused. please help

mile098
02-17-2008, 01:51 PM
not a competitor by far but from what i have read the best results are with the subs and ports facing the roof..

art
02-17-2008, 02:05 PM
my subs face up now with the ports into the cab and its not as loud as it was with the subs rear facing

mile098
02-17-2008, 02:06 PM
loud to the ear does not equal loud to the TL

ThatChevyGuy
02-17-2008, 02:06 PM
Intrigue is loud suv style,should be about the same for alero, idk with subs up and port firing at the trunk. But its loudest with both back.

lilmaniac2
02-17-2008, 02:07 PM
Subs firing forward, port firing to the passenger side got me doing 139.9 in bass race with a pair of 12s and 300 watts total in my g/fs alero :)

art
02-17-2008, 02:13 PM
Subs firing forward, port firing to the passenger side got me doing 139.9 in bass race with a pair of 12s and 300 watts total in my g/fs alero :)

so the port was on the side of the box on the side to the right of the subs?

lilmaniac2
02-17-2008, 02:14 PM
side of the box, near the rear of the vehicle

art
02-17-2008, 02:24 PM
thanks for the input guys keep it coming

zierbox
02-17-2008, 04:26 PM
You have the wrong vehicle for competition (trunk car; very difficult to SPL)
Do the rear seats fold down in an Alero?

art
02-17-2008, 06:57 PM
yes the seats fold down.

zierbox
02-17-2008, 07:02 PM
For a competition set-up I would face all forward with the largest port area you can cut
The box will probably take most of the trunk
For Cruz around bass face all back

IDSkoT
02-18-2008, 03:36 AM
I read somewhere never to put ports behind the drivers. Always ontop, below, on the side, or in front, but never in the rear.

art
02-18-2008, 07:57 PM
yeah i think i am going to go with port back subs back and angled a little. i am going to build a square box and move it around in the car first i think. thanks everyone for your help