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Thread: Subwoofer, face forward or backward?

  1. #11
    Constant Bitrate Adam432823's Avatar
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    Argh... stupid weekend is too far away.

    That paper you linked to is pretty definative. The only issue I still see is that I have 2 subs and those tests were based on a single sub. This box is so big that it seems to me that it should effectivly block just about anything trying to get passed it. Such as direct or reflected sound waves. Anyways, I'll let you know what happens when I finally get to play with it some more.

  2. #12
    Variable Bitrate
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    In my hatch I had 2 10s on 800w (bridged) at 2ohms. They sounded best when they reflected off the rear glass and back into the cabin. In a regular car. I've always heard/felt the best/strongest when they were faced towards the back. Even in my buddy's sedan with two 12" JLs in a ported box that took up his whole trunk, they faced rear. You'll have to flip them around and figure out which is best for your sound.

    Dunno what to tell you to do about the rattling... I shook my hatch loose by using my subs all the time.

  3. #13
    Maximum Bitrate starfox's Avatar
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    Eddie's articles are always good.

  4. #14
    Maximum Bitrate fantomas's Avatar
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    face them which ever way they sound best. dont face them back because everyone else does it. listen to a song as is and listen to the same song after you've turned them around. obviously adjust the amp or HU settings to get the ideal sound you're looking for for both ways...
    rebuilding carpc... kinda..

  5. #15
    Constant Bitrate Adam432823's Avatar
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    Fantomas, definitely. I've been to a number of car audio shops and they've been saying to face them rearward. In the same breath they've been saying that I need bigger amps and larger subs. I wasn't really beleiving them until one of my buddies mentioned there was some truth in it.

    I wasn't willing to do the work of turning it around until I got some real world input first. But now I'll try both ways and see. I'll post back with what I find.

    Thanks to everyone for the input.

    Edit: Well I turned it around. I'll be damned, but it did make it sound a whole hell of a lot better. I thought FOR SURE I wouldn't be able to hear it at all. But I guess that's what 400 watt per channel will do for you.

  6. #16
    Newbie Huflungdung5342's Avatar
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    I've read that the reason why many people face the subs towards the back is it takes the sine wave about 18 ft. to reach it's peak so it sp the sub fires and the wave bounces back a longer distance than if it were just facing foward

  7. #17
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    Yeah, this is an interesting topic. In my experience sub(s) tend to sound better in vehicles with trunks (read: not hatchbacks) when the subs face backwards. Like others have stated, there's not a wealth of proof out there but there's been some poking around into this. Every vehicle is different and the paper on installer.com gets around to the main idea. Basically you're either sitting in the "top" of the wave, the "bottom" of the wave, or the middle (amplitude=0). It just so happens that in most vehicles when the subs are towards the back of the trunk facing backwards the sound wave lines up with where people sit in the car. The part with the trunk being open has to do with formants. With the trunk closed you have a natural frequency for vibration in the trunk itself. Two perfectly parallel surfaces will give you a formant (more on this in a second) at a natural frequency dependent upon the distance between the two points. A formant is basically a naturally resonating frequency that exists between two fixed points. They come into play in home subwoofer setups where people have parallel walls. The room has it's own sound because of the distance of the walls and if you put the sub in one of the "down" parts of the curve it sounds awful, move it over 4 feet and you have great bass. Same concept. All that crap aside, try your subs all over. Move 'em around, spin 'em, try firing them up. Whatever sounds best is what works best for you and that's what matters. Also, the hardcore should try different sized boxes this way, that's pretty intense however.

  8. #18
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    ^ this is very true i have 2 15s for my house setup and my living room has an odd shape and saturday i had to dj for a friends party and the hall they rented was a rectangle and the 2 15s sounded twice as good and loud every one that heared them in my house and at the party thought i had bought new speakers

  9. #19
    Newbie scopium's Avatar
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    christmaspie
    you spoke my thoughts..lol

  10. #20
    Variable Bitrate PaCMaYNE's Avatar
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    old topic,, but i fabricated in a custom box, to face SIDEWAYS in my trunk, then made some air holes on the right side of the trunk,, and its sounds as good as when i had it facing backwards with the trunk open,,
    throw a moon

    heuvos vin chevos

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