Subwoofer Position/Mounting Trunk
Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=40096
Printed Date: May 15, 2025 at 10:09 AM
Topic: Subwoofer Position/Mounting Trunk
Posted By: 12slack
Subject: Subwoofer Position/Mounting Trunk
Date Posted: October 01, 2004 at 10:07 AM
I understand that when a subwoofer is positioned/pointed/facing to the rear of the trunk at roughly 90 degrees is when the best in car bass response and loudness is achieved in a sedan type vehicle. What about when the subwoofer is mounted inverted?(facing into the enclosure). For example to achieve the same loudness/bass response as when the subwoofer is mounted inside the box facing out, where would you place the subwoofer? With the magnet of the speaker nearest the trunk opening? Pointing to the front of the vehicle but with the actual placement of the subwoofer near the trunk opening? Thanks any info/experiences would help.
Replies:
Posted By: funyin
Date Posted: October 02, 2004 at 6:50 PM
you are correct about facing the subs to the rear of the vehicle for best bass response, but dont worry about running regular or inverted too much. the reason that you run subs backwards is to try and cut down on "cancelation" as much as possible. running your subs inverted should have little effect on the loudness of your low end as long as you are running them all in correct phase. so i say go for it either way you want to run them, keep the sub box facing rear and near the back of your trunk. car audio and electronics has a decent article in there july magazine (page ten) about facing rear and the effects of noise cancelation. good luck...
Posted By: customsuburb
Date Posted: October 02, 2004 at 7:17 PM
Funyin...describe to me how you can "cut down" on cancelation by inverting subs. The only to invert a sub is to make it look better; it shouldn't sound different. -------------
Posted By: funyin
Date Posted: October 02, 2004 at 8:12 PM
i never said that inverting subs will cut down on cancelation. i was simply telling 12slack to face his subs any way he pleases as long as he keeps his box facing to the rear. that is of course he wants to go for an all out custom and sealing his trunk up. try reading my reply again and see if you get the same result.
Posted By: 12slack
Date Posted: October 03, 2004 at 8:54 AM
Again thanks for the info!
Posted By: ice4life8269
Date Posted: October 04, 2004 at 6:19 AM
funyin wrote:
you are correct about facing the subs to the rear of the vehicle for best bass response, but dont worry about running regular or inverted too much. the reason that you run subs backwards is to try and cut down on "cancelation" as much as possible. running your subs inverted should have little effect on the loudness of your low end as long as you are running them all in correct phase. so i say go for it either way you want to run them, keep the sub box facing rear and near the back of your trunk. car audio and electronics has a decent article in there july magazine (page ten) about facing rear and the effects of noise cancelation. good luck...
customsuburb, I was thinkin the same thing. lol. Dude said it, but I bet he was tryin to say something else...... I'd like to here it -------------
Posted By: CarAudioHelp
Date Posted: October 04, 2004 at 2:35 PM
I was about to post the same question as customsuburb too but scrolling down I see it's covered. Inverting subs is for cosmetics and, if you're old school, for some isobaric loading designs. The output is the same for an inverted subwoofer. Just make sure you get the wiring correct so the bass is in phase with the other speakers. Inverted woofers need to have their positive and negative wiring flipped in most cases.
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Posted By: HottAccord
Date Posted: October 05, 2004 at 12:19 PM
LMAO, I used to invert my 1st pair of subs cause to me it sounded better. Funny thing is I never reversed the wiring of the subs and they still performed the same. In my case, they were not the prettiest subs inverted, just plain and boring!  ------------- Im a fiberglass whore!!
Posted By: 12slack
Date Posted: October 05, 2004 at 12:50 PM
Yeah sometimes when you invert mount the subs you have to reverse the wires but not always I figure you try both ways and go with whatever sounds better.
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