94 325ic / needs bass

[curt]

Hi,
I have a 1994 325i convertable. I have a sony mp3 cd player and the sound is excellent, only there is no bass. I would like to put some subwoofers in the trunk but have been told I will get no sound when the top is down (which is almost all the time). Has anybody else come up with a solution to this without destorying my interior? Thanks

[Evil 330ci]

port it?

[carstereopro]

destorying your interior would suck! JK

There is no way to "contain" the bass in your car when the top is down. The solutions is as follows:

1. Surface area (as in cone surface area) The more subs, the more air you will move, the louder it will be. (its only physics)

2. Power, again, the more the better.

3. Get the bass into the car. Take out the center arm-rest pad and hidden compartment, cut through the carpeting so that you have a hole from the trunk into the passenger's compartment.

now I've worked on 8 different 3-series convertables over the last 10 years, here's the best sounding set-ups:

1995 325ic, dual 10" JL Audio 10w3's with JL Audio 500/1. Subs in a custom box, rear firing, trunk Dynamatted.

1994 325ic, Four 12" Jl Audio 12w3's (in a custom box built into the spare tire well) with a kenwood Excelon mono amp, wired to 1 ohm for a total of 1000 w/rms.

and the biggest surprise of all, 1994 318ic, one 10" JL Audio 10w0 in a JL wedge box, rear firing, with the arm-rest and storage compartment removed. Powered by a 200w kenwood mono amp.

This car was the biggest surprise, it sounded really good with the top down, and it was the most modest of all the systems I had done over the years.

No matter what you do, you will lose volume when the top is down.

[curt]

Thanks for the info, I dont want to remove any interior components, how do you think it will sound if I dont. I dont necessarly need tons of bass, but would like to hear and feel some. Do you think I will if I dont do any interior modifications? Also do the trunks rattle alot, is the dynamat a neccessity. I dont want to have a gigantic vibrator driving down the street. Thanks

Curt

[carstereopro]

Originally Posted by curt

Thanks for the info, I dont want to remove any interior components, how do you think it will sound if I dont. I dont necessarly need tons of bass, but would like to hear and feel some. Do you think I will if I dont do any interior modifications? Also do the trunks rattle alot, is the dynamat a neccessity. I dont want to have a gigantic vibrator driving down the street. Thanks

Curt

Dynamat is a must!

And the only interior component to remove is the removable cushion in the rear seat, You can always put it back when you are parked, or showing off the car.

[RayMan]

I also have a 94 325ic. My car had the ski-bag which I removed. It's not really a car I'd take skiing anyways and if need be it's easy to re-install. I went with 2 eight inch subs in a sealed box which fire forward - directly into the interior of the car. There is zero vibration in the trunk and I did not need to use any sound damping material. I prefer to avoid damping if I can to save weight. The box is as wide and high as the trunk will allow and less than 6" deep. It sits right against the rear seat area. My amps are mounted on the back of the box and I am left with enough room to store my wind deflector. If you have a wind deflector, that will give you an idea of how much room I have left.

[RayMan]

One more thing. I never remove the cushion. (except for this picture). In my set-up, there is no perceptible sound difference with and without the cushion in.

[1986BMW325es]

if u want good bass and good voice.. like i've said in before threads.. use two 6x9's Sony + a MTX 200 Watt AMP

http://www.xplodsony.com/products/?C...s&MD=XS-V6950H thats my speakers

well i cant find my amp on MTX but its a 200 watt MTX Thunder 4122

[RayMan]

Originally Posted by 1986BMW325es

if u want good bass and good voice.. like i've said in before threads.. use two 6x9's Sony + a MTX 200 Watt AMP

http://www.xplodsony.com/products/?C...s&MD=XS-V6950H thats my speakers

well i cant find my amp on MTX but its a 200 watt MTX Thunder 4122

I think this thread is about adding bass to an e36 convertible. 6x9 Sony "4"-way Explodes won't work.

[1986BMW325es]

man i know its about bass... but i guess u havnt heard the 6x9 + amp...

[RayMan]

Originally Posted by 1986BMW325es

man i know its about bass... but i guess u havnt heard the 6x9 + amp...

Hey, didn't mean to offend you. Only half of the original question is about bass...the second part of the question is getting that bass in an e36 convertible. e36 convertibles do not have a good mounting location for 6x9's...not one I can think of anyways...especially one with minimal modification. Maybe you can offer some ideas. Looks like (from your sig) you have a non-convertible e30 which is a lot easier to utilize 6x9's than an e36 convertible.

[1986BMW325es]

non offense taken... im just giving ideas.. lol

[puertorican]

hi im sure we gonna find something just contact me puerto-rican@web.de we are a tuning shop