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In Trunk Sub Box Why Point Away From Cab?

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Old Oct 5, 2003 | 12:43 AM
  #1  
ruhbuhzuh's Avatar
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Why do people point there subs facing away from where they sit in there cars? is there any advantage of this? i got a sunfire and mine are pointed towards me and if i want can fold down rear seats and it just blasts right at me... is this good or bad? lemme know im new
Old Oct 5, 2003 | 01:54 AM
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I'm not sure what the reason is. My stuff always sounds better when it is facing away from me. In my car now I have my subs facing toward me but they are in a hatch. But in my old car which was a trunk, they always sounded louder and cleaner when they were facing away! Someone else can probably touch on this better though!
Old Oct 5, 2003 | 05:17 AM
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i have a 98 hatchback, which way should i point my sub for optimal sound?
Old Oct 5, 2003 | 06:42 AM
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Trial and error to see what is louder..
Old Oct 5, 2003 | 07:17 AM
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can anyone tell me from experience?
Old Oct 5, 2003 | 07:28 AM
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also i want to build my box so that the one said is on a little bit of an angle and matches up witht he back of my seat. where would i want to put the subs in this case? on the angled side facing the front or on the flat side facing the rear?
Old Oct 5, 2003 | 05:38 PM
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Face the subs toward the rear of the car, it will sound louder because you are hearing more of the sound wave, it has to do with how low frequency sound waves travel, it would be easier if i could draw a pic but i will try to explain it, say your sub is facing north, the sound wave will start north for a short distance, then it will peel back do a u turn and head south. trust me and give it a try, i did it to my friends civic, he had two ported tens facing the front of his car, and he would fold the back seat down to get more bass, i turned his box arround and i would guesstimate at 10-20% more bass. hope this helped
Old Oct 5, 2003 | 07:58 PM
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Originally posted by Dalaran:
can anyone tell me from experience?
It's not a matter of experience as much as it is physics...
Although, obviously, experience would land you in the same end-result camp.

Bear in mind that the wavelengths of sub-bass are much longer than the illustrations would seem to show in this article, and it's in many ways an oversimplification, but this really does explain the "why" very well (thanks to Eddie Runner):
http://www.installer.com/tech/aiming.html

If you want to dig a little deeper into how multiple different-length pathlengths can affect each other (in this case, direct vs. reflected sound, in others it might just be two speakers in different locations, two direct pathlenths, and maybe all of their reflected pathlengths! phew), I wrote up something, more for the layman / wannabe-geek:
http://www.betteraudio.com/geolemon/Phasing/Phasing.htm

Hopefully you'll find your answers in there, maybe more.
Old Oct 5, 2003 | 09:34 PM
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A more sincere welcome to geolemon! You know where to find your stuff! Glad to have you here, hope you stick around, you'll be a great asset to this board.

The first link does a beautiful job explaining the sound wave cancellation that occurs and why it happens. [img]graemlins/thumb.gif[/img]
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