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Subs facing each other

Old 12-03-2010, 02:04 PM
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Subs facing each other

Hi guys this would be my first post and pretty much one of the reason i joined here.

I am trying to find some info on this. How will the sound be affected if the subwoofers are facing each other. No difference ? Less bass ? Distortion ? That is what i am wondering.

My problem beeing i have limited space in the truck cause of the fact is my gaz tank is between my rear seats and trunk so it doesnt go to deep and i wish to keep a clean look and some trunk space.


basiclty here is a picture of what my question is

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Thanks in advance for the advice
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Old 12-03-2010, 02:43 PM
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I would say it depends on your goals and what exactly you are trying to achieve.

This might do alright for SQ setup... not sure how well it'll kick out the lows if they are sealed and sealed off in the trunk. Maybe a hatch, or if you allow the wave to enter the cabin, but by the looks of that pic, its all show.
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Old 12-03-2010, 02:45 PM
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It won't cause distortion. You would get better bass if they were pointed to the back of the trunk but they'll be just fine, the difference would be minimal, and the trunk looks sealed off anyways, that alone should get you a gain in output. Since you have a fackin' sweet trunk, don't worry about cancellation. You've obviously chosen looks over practicality. Looks great!
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Old 12-03-2010, 07:45 PM
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But cancellation is an easy thing to fix. Just wire one sub out of phase, no?
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Old 12-03-2010, 10:14 PM
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Originally Posted by fresh1 View Post
But cancellation is an easy thing to fix. Just wire one sub out of phase, no?
No. not always that easy!!
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Old 12-03-2010, 10:23 PM
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Even with cancellation, that trunk is so sweet, who cares. If you wanted the full potential out of the drivers, you'd have to yank all of that hard work out.

If you have two amps than you can phase one of the subs and they'd both move in the same direction.
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Old 12-04-2010, 12:13 AM
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Yeah, when the trunk looks that nice I don't think there is much of a care for sound, but I thought subs facing each other meant they were isobaric in nature, and just making them play opposite of each other helped. Then again, I've never had to deal with a situation like that so I can only go off what I've read. To The Twins, please enlighten me (even though you're my enemies lol)
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Old 12-04-2010, 09:23 AM
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Lightbulb

Originally Posted by fresh1 View Post
Yeah, when the trunk looks that nice I don't think there is much of a care for sound, but I thought subs facing each other meant they were isobaric in nature, and just making them play opposite of each other helped. Then again, I've never had to deal with a situation like that so I can only go off what I've read. To The Twins, please enlighten me (even though you're my enemies lol)
They can still sound good in a "show" install.....will they get as loud as they could in a more "traditional" install....maybe, maybe not.....

Facing each other like this, they still pressurize the same airspace at the same time (wired in phase) and if there is a clear path into the passenger compartment you should get decent sound. Wiring them out of phase will serve no purpose here, doing it with the subs in an isobaric configuration (sharing airspace) works because the drivers are coupled directly together and can take advantage of that configuration.

HTH
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Old 12-04-2010, 10:41 AM
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That's not his trunk. He posted that picture as an example of the setup he is thinking about. FWIW that trunk looks alright but the enclosures coming out of the sides like that looks bunk.

That setup will cause cancellation, most do, but whether or not it is in the range you play the woofers in is the question. They look close enough that it should not be a big deal.
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Old 12-04-2010, 12:59 PM
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Question

Originally Posted by Dukk View Post
That's not his trunk. He posted that picture as an example of the setup he is thinking about. FWIW that trunk looks alright but the enclosures coming out of the sides like that looks bunk.

That setup will cause cancellation, most do, but whether or not it is in the range you play the woofers in is the question. They look close enough that it should not be a big deal.
They could have done a better job on the enclosures for sure, something curved instead of squared off would look better IMHO.

Begs the question is there any way of modeling or calculating the frequencies that will have cancellation issues? Just wondering if changing the distance between the drivers or maybe raising the height of the floor would make a predictable difference that you could modify the layout of the trunk to compensate for prior to the build.....
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