Bass wave Question.

[Bigrick31 10+ year member]

So im sitting around thinking about how to construct my new system. when o start thinking about bass waves. The longer the wave the louder you setup will be. thats why you face your box twards the rear of your car so it will reflec of of the back wall and take longer to travel twards the front creating a longer wave. now if thats true woulndt you ideally want to put your subs as close to the front of your car as possible. making it take an even longer time to reach the back wall and then reflect to the front thus creating the longest possible wave in a car?

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[Nikuk 5,000+ posts]

So im sitting around thinking about how to construct my new system. when o start thinking about bass waves. The longer the wave the louder you setup will be. thats why you face your box twards the rear of your car so it will reflec of of the back wall and take longer to travel twards the front creating a longer wave. now if thats true woulndt you ideally want to put your subs as close to the front of your car as possible. making it take an even longer time to reach the back wall and then reflect to the front thus creating the longest possible wave in a car?

Not quite.

A 30hz wave is something like 37' long. No matter how you do it, you're not going to get that full wave in your Eclipse.

Thats not the whole reason you face an enclosure rear. You do it more so to reinforce the wave AND a whole lot of other reasons.

You also have a hatchback. Cant really face it "rear", its an open cargo bay.

The longer the wave the louder the the setup? No. That would mean a 1 hz wave is a lot louder then a 100hz wave. That is possible, but you'd have to tune to 1hz and alot of power to a hardy sub. Wave length has very Little to do with how "Loud a setup is" for street. And minimally at best for SPL.

The only way to know which way is loudest is to try different positions. It sounds tedious but its VERY true. With a CRX style box in a 4th gen Mustang, sliding the box 3" closer to the rear of the car gained .6 dB. Inverting it (subs back. ports up) in the same position yielded another .3 dB.

 

[btnhfan 5,000+ posts]

good to know.

 

[thismightbepat 10+ year member]

Would speaker size affect this in the least? I read in a magazine (can't remember which) that says that for extended cab trucks, 12's and 10's are more suitable b/c they "complete the soundwave" faster or something, I figure it was ********, so I went with 15's //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif . And I'm only assuming that the best way to face mine would be to the roof....just seems sensible.