Facing Subwoofers in or out in box?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=85450
Printed Date: April 27, 2024 at 5:00 AM
Topic: Facing Subwoofers in or out in box?
Posted By: skier9nude
Subject: Facing Subwoofers in or out in box?
Date Posted: November 10, 2006 at 6:51 PM
Im wondering if i turn one of my subs facing in towards the box and one sub regular...i have 2 12" mofo-12 with a ported box? please let me know what you think here is a picture of what im thinking...but only one subwoofer facing out in the picture?? -edit by mod. Picture was distorted - -------------
Replies:
Posted By: 1lowgalant
Date Posted: November 10, 2006 at 8:02 PM
it doesn't really matter. there will be little if any audible difference. it's basically just for looks. if you're doing a push/pull, be sure to wire one out of phase.
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Whatever you do, DO NOT let the white smoke leak out of the wires.....
Posted By: skier9nude
Date Posted: November 10, 2006 at 9:39 PM
so it does not matter if i do it even to a sealed box? cause i wanna add 2 more 12" on each side of my trunk and flip the subs around.. with my sealed boxes
Posted By: Flakman
Date Posted: November 10, 2006 at 10:04 PM
As long as all of the subs are moving in the same direction at the same time, it won't matter. All of the subs must be in phase relative to the listening area...not necessarily with the direction they are pointing. In other words, all of the subs need to be pushing out away from the box at the same time.
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The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
Posted By: boulderguy
Date Posted: November 11, 2006 at 10:53 AM
Inverting the subs will increase the enclosure size tho, which may or may not be a bad thing. Check your box dimensions before you commit to it.
Posted By: Flakman
Date Posted: November 12, 2006 at 1:20 AM
Most woofers won't give you more than .1 cubic feet. My RF T1's as big as they are only take up .085 cubic feet. Many times when space is an issue anyway, the sub is more of a space taker when mounted inverted.
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The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
Posted By: maliboom
Date Posted: November 12, 2006 at 10:44 AM
as far as i've always been told you will lose 3db when inverting subs. I have run boxes for weeks with the subs normally to get to know the sound and then inverted them and didn't notice any difference in sound. I have never had the set-ups metered to see if there was an actual db drop though. by the way how do you like the MOFO's.
Posted By: aznboi3644
Date Posted: November 12, 2006 at 5:29 PM
well whatever you've heard is totally wrong...loss of 3db??? ROFL!!
Posted By: normalicy
Date Posted: November 16, 2006 at 11:10 AM
Yeah, there is absolutely no loss of volume from inverting the sub. Unless of course it was wired incorrectly. Also, the sub may only be .1 cubic feet, but you also gain more air space because of the bowl of the cone extending beyond the box. With the tiny box sizes these days, .15 cubic feet can make a big difference in sound (usually better).
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What is normal anyway???
Posted By: cloak559
Date Posted: November 16, 2006 at 2:41 PM
The space the inverted cone takes up is added into the displacement number...EVERYTHING below the gasket is accounted for...
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'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz
Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...
Posted By: normalicy
Date Posted: November 16, 2006 at 2:54 PM
You don't understand. It is accounted for if you are considering the rear of the sub to be on the inside of the box, however, when magnet is mounted on the outside of the box, the subwoofer now takes up negative space (flat piston subs excluded) due to the fact that the cone is now a dome. A dome that has air space. Not alot granted, but something to be considered (especially with a deep inverted dustcap sub). It can be as much as... .05 cu. ft. (on a 12" sub) like I stated. So, you're taking out the space consumed by the sub & you're adding the space of the new dome over the mounting hole & you get about .15 ish cu. ft. extra space.
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What is normal anyway???
Posted By: 1lowgalant
Date Posted: November 16, 2006 at 2:57 PM
yes, inverting a sub will add very little to the internal volume of a box. in most cases, anywhere from 0.06-0.09. not alot, but can make a small difference, usually not audiable though.
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Whatever you do, DO NOT let the white smoke leak out of the wires.....
Posted By: master5
Date Posted: November 17, 2006 at 5:08 PM
I like facing the subwoofers towards my neighbors. And also I enjoy a 50% stuffing..I use stovetop.
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