would it ever sound right!!!

[speedyo 10+ year member]

no i have not considered it... how would i go about this i really dont wanna be cutting on my car lol or anything like that im not to great at it

 

[BigManFred3251 10+ year member]

Cut the rear firewall out. I did it with my buddy's car and the system sounded by far better. Should of done it to my old car, but never thought about doing it. You really couldnt tell by sitting back there that the support for the seat was gone. Draw the lines the way you want it cut to look good then just go to lowes or something and get rubber stripping to go around almost giving it a stock look. Just an idea.

 

[alias3r 10+ year member]

put some big *** subwoofers in there with some crazy bass..

maybe 15''L5's or 12''solo X's or something. Get something that will be so loud that it will go through the firewall..

 

[alias3r 10+ year member]

Cut the rear firewall out. I did it with my buddy's car and the system sounded by far better. Should of done it to my old car, but never thought about doing it. You really couldnt tell by sitting back there that the support for the seat was gone. Draw the lines the way you want it cut to look good then just go to lowes or something and get rubber stripping to go around almost giving it a stock look. Just an idea.

i would not cut a firewall in a BMW.. its not worth it for the sound.

 

[dragnix 5,000+ posts]

put some big *** subwoofers in there with some crazy bass..
maybe 15''L5's or 12''solo X's or something. Get something that will be so loud that it will go through the firewall..

i would not think a 15" L5 would be all that crazy...and i wouldn't put a solox in a beemer, not worth it for the sound

 

[alias3r 10+ year member]

i would not think a 15" L5 would be all that crazy...and i wouldn't put a solox in a beemer, not worth it for the sound

i meant 2.. notice the 's on the L5.. lol. 2 JL 13''w7's would pound pretty good...

or 2 15'' Rockfords, i knew a guy who had those fully powered with 9 batteries in his car to power the amps, and it was loud as shit

 

[dragnix 5,000+ posts]

could've just said 2 15" L5, but i wouldn't do the RF, waste of money. They're known for their amps, not so much their subs. I say get a new car, really nothing u can do about the BMW

 

[alias3r 10+ year member]

could've just said 2 15" L5, but i wouldn't do the RF, waste of money. They're known for their amps, not so much their subs. I say get a new car, really nothing u can do about the BMW

BMW's are sweet tho. i would keep the car and just put in like 1 18'' or something. IDK. id keep the beemer.

 

[Jep772 10+ year member]

take the rear speakers out, should offer a little pass through.. or like mc fly said up there, get 2 big 15's and 10kw

 

[MTXman 10+ year member]

Like Jep said, take the rear speakers out, you don't really need them.

Also, just fold the seats down and if there's that trunk opening in the rear seats, fold that down aswell.

Despite the firewall, with 2 L7's, you will be able to hear the bass, less, but you will still feel it.