My New System!, PIctures!!!lots! huge! Options

[KB-2]

okay so liek 2 weeks ago i installed my new sound system:

Alpine Headunit
15' Type R' sub
Hifonics Brutus Amp 1,200 rms....supposedly

it freking pounds the **** out of my car! its jsut pure vibrations and thumps. however its not a friendly fit in the coupe. i had to remove the spare tire to create...liek a divit for it to fit.
but anyway it pounds..alot
and how its set up now, i finally got it turned around so its sitting how most ppl have their subs positioned




















so it pretty much takes up the whole trunk.
and like i said, its no longer positioned like that anymore

This post has been edited by KB-2: Jan 10, 2007 - 8:28 PM

[soven]

In theory, it's because no matter what direction you point the box, the soundwaves are going to radiate from every direction, incuding the direction opposite to where the cone is facing. By putting the cone facing to the rear, your sound waves bounce back almost immediately and are in much closer phase with the waves radiating from the back of the box. Otherwise, they are not quite in phase and cancel each other out a bit resulting in lower apparent sound levels.

I'll try to find the article where I read that (been a couple years).

Correct. Actually, the best setup(tested by a guy with published results) is a subwoofer positioned against the rear . Here for details: http://www.teamrocs.com/technical/pages/aiming.htm

As for subwoofer sound. Any speaker will have a sound wave behind and in front of it. After all, it is just a cone(paper etc) vibrating away. The box air volume acts sort of like a car shock, it "controls" cone movement which is why many people say that you can easily blow subs(not designed for freeair) if you run it free air because it doesnt have the resisting force from the air volume in the box anymore. This also brings about the use of thick mdf for box construction(18mm>), not only is it vital to have a non flexing box.... it also helps prevent the backwave of the sub from destructively interfering with the front waves which will cause cancellation.(same theory applies to door speakers) and yea I have nothing better to do now

This post has been edited by soven: Jan 12, 2007 - 2:38 AM

[GTSOwner]

I'll try to find the article where I read that (been a couple years).

Correct. Actually, the best setup(tested by a guy with published results) is a subwoofer positioned against the rear . Here for details: http://www.teamrocs.com/technical/pages/aiming.htm

AWESOME! That's the exact article I was looking for!!!