97 bmw m3, sub addition

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=97760
Printed Date: May 09, 2025 at 3:44 PM

Topic: 97 bmw m3, sub addition

Posted By: steveskal
Subject: 97 bmw m3, sub addition
Date Posted: October 08, 2007 at 1:35 AM

I just added some boom to my 97 M3 and it just doesn't seem as loud as it should be. I already had a nice deck, the newest Alpine CDA-9887 and I added a JL Audio 500/1 Monoblock amp and a ported box with 2 10 inch JL Audio 10W6's, this thing should be blowing my back seat out and unless I turn it up really high I don't get much boom. I have the box firing right into the back seat but this car has a whole metal plate behind the back seat, do you think the sound just isn't getting though that?? Should I try facing the speaker towards the back of the car or even firing straight up, or so you think there might be some other problem?? Thanks!

Replies:

Posted By: kassdog
Date Posted: October 08, 2007 at 3:13 AM

Who tuned the amp. Try taking it by a local custom shop and have them tune. They will probably do it for cheap if not free depending on how the install was done.

Posted By: jvillefinest
Date Posted: October 08, 2007 at 10:17 AM

def try firing the box towards the rear of the trunk....basically a low frequency needs room to create itself. and also by facing the subs toward the front of the vehicle you get alof of cancelling issues. so by facing it toward the rear you should get a large amount of increase in sound and much better sounding bass.

turn'em around and watch what happens!

-------------
2007 Acura TSX
SQ setup in the works

Posted By: steveskal
Date Posted: October 08, 2007 at 10:29 AM

Sweet! Now I can't wait to get home from work and try it. Thanks so much. I was getting real upset, I mean you spend the money for top quality components and then don't get the desired results, its very disheartening :-(

Posted By: steveskal
Date Posted: October 08, 2007 at 9:17 PM

WOW! Something so simple, I can't believe the difference. I turned the box around and it sounds fantastic!