I am going with 4 12's, and wondering, is it possible to have a box that has 2 subs firing towards the hatch, and 2 towards the front of the car? And for the port(s) can I have a slot port on each end, or would just one on the hatch side be enough.


*2000 Cavalier sedan*

I would imagine you'd have a terrible case of cancellation. Usually it's a good idea to keep all the woofers facing the same direction. Why are you going with so many woofers anyway?

wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good.

LOL

Yeah I was thinkin that. Oh well, 2 it is. Thanks.


*2000 Cavalier sedan*

Direction doesn't really matter with frequencies that low. If built correctly, such a box can be pretty efficient because no energy will be lost in making the box vibrate.

2002 Cavalier 2200 5spd

Direction does matter with subwoofers as well. They're moving a sound wave, which can also cancel. Point in case is my current setup. I'm running 4 12's, top firing, port back in my trunk/backseat area. With windows up I have a bit of cancellation, with windows down, I have nauseua

The wavelength of a 40hz wave is about 25 feet. Unless you drive a bus and stick a sub on each end of it, you can pretty much rule out destructive interference.

2002 Cavalier 2200 5spd

My friend had a 2001 Victory Red Cavalier 2dr with four Xplod 12"s, two 1 farad caps and two " 1800watt " [quoted because we all know those figures are BS :p] Pyramid amps. The box he'd made was a 4 chamber sealed and had two facing the back of the back seat and two towards the trunk lid. It was plenty loud.

I was also thinking of a top firing setup with 4 12's. Hmm, which would be better. It will be gettin 4000 real rms watts and 8000 max...should bump. Also sealed or ported? Hmm...


*2000 Cavalier sedan*

Solid Snake wrote:The wavelength of a 40hz wave is about 25 feet. Unless you drive a bus and stick a sub on each end of it, you can pretty much rule out destructive interference.

That's correct, but that wavelength is bouncing off of things, sometimes itself.

Quote:

That's correct, but that wavelength is bouncing off of things, sometimes itself.

There is not enough room in a trunk so that subs can be placed far enough from each other to cause destructive interference at bass frequencies. Frequencies that low are omni-directional. If they weren't, most of the people here wouldn't have their subs pointed at their trunk lids.

2002 Cavalier 2200 5spd

there is alot of ways to do your sub setup. When i had my Indy Beretta I had 4 12's in it. Two were floaters and the ohte two were active. But to make you can make anysetup if you have the money to do it. There is a place here in Sioux City IOWA that has a Geo Metro with 20 12 inch subs in it. YES I SAID 20!!!So do what you want and good Luck

My friend had a cavalier a while back, he had 8 12s in it. The box took the entire trunk, but it had 2 on the top, 2 facing the seats, 2 facing the trunk lid, then 2 on the sides. It hit alright, but i think it actually hit harder when he just had 4 of them in it... possably frequencys canceling out? who knows.


"Hondas are like tampons, every pussy has one!!!"

Chad Hogan wrote:there is alot of ways to do your sub setup. When i had my Indy Beretta I had 4 12's in it. Two were floaters and the ohte two were active. But to make you can make anysetup if you have the money to do it. There is a place here in Sioux City IOWA that has a Geo Metro with 20 12 inch subs in it. YES I SAID 20!!!So do what you want and good Luck

Its too bad that the Geo doesn't have enough space for the woofers to shine. My wall with 2 15s and maybe 1200 watts was just as loud if not louder. there is a point at which you can have too much stuff and they have reached it, and they will also admit it. that car is entirely show, besides its stereo town's old car, they just bought it off the cop auction.

Regardless of whether or not bass is omnidirectional, you still have the fact that the wave is travelling from the source. If you have them facing oposite directions, the waves are going to bounce off different surfaces in the vehicle, and interact differently at different points in the car, and they can cause cancelation. If you want to use 4, for whatever your reason, an isobaric box may be a good option for you. Not only will it not have the problem of canceling, but it effectively reduces the required air space of the box.

Solid Snake wrote:

Quote:

That's correct, but that wavelength is bouncing off of things, sometimes itself.

There is not enough room in a trunk so that subs can be placed far enough from each other to cause destructive interference at bass frequencies. Frequencies that low are omni-directional. If they weren't, most of the people here wouldn't have their subs pointed at their trunk lids.

That isn't the right way to do it. Facing the back of the trunk will be a whole lot louder than the top, due to cabin gain.