bandpass or ported in a 325i bmw sedan

[mikeyraw215 0]

Aight guys, I have 10" american xfl sub a ported box tuned to 30hz in my sedan and I was thinking about switching it up and doing a 4th order bandpass box with a flared port tube shooting thru the rear deck. Also the rear deck will custom fiberglassed and molded to securely mount the port and speakers. Or should I just leave the ported box and fiberglass the rear deck with a vent for the bass to come thru. I'm just trying to eliminate having to keep the armrest down or having the seats folded down so that the bass isn't trapped in the trunk.

Here's a video of a lexus with a 4th order bandpass box ported thru the rear deck thru the factory sub location

http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/399106-2-re-audio-10-sxs-4th-order-bandpass-ported-through-rear-deck-lexus.html

[steveo50 3]

i have a box like that in my garage but its all wood. i have some pics if you would like to see.

[mikeyraw215 0]

i have a box like that in my garage but its all wood. i have some pics if you would like to see.

Sounds good. U can e-mail them to [email protected] if u want

[///M5 2,833]

One of the few times that I agree with the use of a 4th order BP. Depending on your goals and design capability in that car it could potentially be the best option. Going to have to work on a front stage a bit to make it blend though as those cars aren't known for room for large drivers up front in some years of course worse than others.

[mikeyraw215 0]

One of the few times that I agree with the use of a 4th order BP. Depending on your goals and design capability in that car it could potentially be the best option. Going to have to work on a front stage a bit to make it blend though as those cars aren't known for room for large drivers up front in some years of course worse than others.

Yes..... tell me about it. Their 4" speakers in the doors. I did find the o2 audio makes a 4" midrange loud speaker and that's what I'll be using in the doors and I would really like to see if I can fit some in the a-pillars.

Also I'm gonna need some help designing this bandpass box especially because of the way I'm gonna have to mount the port on the rear deck. I was thinking maybe if I can get some specs on what airspace I'm gonna need in the sealed portion and ported portion and also port tube sive, I can come up wit my own design to fit my trunk..... I would also love to use plexi

[steveo50 3]

here are some

one more

Edited June 11, 2011 by steveo50

[mikeyraw215 0]

How does it sound and what sub u got in it. Also what is it tuned too

[steveo50 3]

it was in my old 01 325 i it was a 12" deathrow not sure of the tune. it was great not like its going to throw up crazy numbers but was very nice and you will have to get some front stage. it would hammer the lows like it was amazing to me.

[///M5 2,833]

4" and bandpass won't really work...need more cone area in the front

[mikeyraw215 0]

4" and bandpass won't really work...need more cone area in the front

There midranges so their loud ashit lol

[///M5 2,833]

4" and bandpass won't really work...need more cone area in the front

There midranges so their loud ashit lol

Not at the required frequencies to blend, not even close.

[mikeyraw215 0]

What's the required frequencies. If your talking about mid bass, I'll be running 8" subs under the seats in the factory location also

[///M5 2,833]

What's the required frequencies. If your talking about mid bass, I'll be running 8" subs under the seats in the factory location also

Perhaps rather pertinent information lol. You do realize that you hadn't even stated what year three yet which doesn't let me know those are there.

I really don't like 4" drivers off axis so much, but everything is a compromise.

[mikeyraw215 0]

What's the required frequencies. If your talking about mid bass, I'll be running 8" subs under the seats in the factory location also

Perhaps rather pertinent information lol. You do realize that you hadn't even stated what year three yet which doesn't let me know those are there.

I really don't like 4" drivers off axis so much, but everything is a compromise.

Damn I 4got lol. I have a 06 (e90). Unfortunately the door speakers are 4"s

[mikeyraw215 0]

Anybody know who would be the best person to talk to about the box design I wanna build