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Facing Subwoofers in or out in box?


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skier9nude 
Member - Posts: 2
Member spacespace
Joined: November 10, 2006
Posted: November 10, 2006 at 6:51 PM / IP Logged  

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 -

1lowgalant 
Copper - Posts: 116
Copper spacespace
Joined: September 15, 2005
Location: United States
Posted: November 10, 2006 at 8:02 PM / IP Logged  
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.
Whatever you do, DO NOT let the white smoke leak out of the wires.....
skier9nude 
Member - Posts: 2
Member spacespace
Joined: November 10, 2006
Posted: November 10, 2006 at 9:39 PM / IP Logged  
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
Flakman 
Copper - Posts: 365
Copper spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: April 25, 2005
Location: United States
Posted: November 10, 2006 at 10:04 PM / IP Logged  
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.
The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
boulderguy 
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Silver spacespace
Joined: April 17, 2005
Location: United States
Posted: November 11, 2006 at 10:53 AM / IP Logged  
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.
Flakman 
Copper - Posts: 365
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Posted: November 12, 2006 at 1:20 AM / IP Logged  
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.
The Flakman
I feel strange. I have deja vu and amnesia at the same time.
John | Manteca, CA
maliboom 
Copper - Posts: 111
Copper spacespace
Joined: October 27, 2006
Location: Canada
Posted: November 12, 2006 at 10:44 AM / IP Logged  

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.

aznboi3644 
Gold - Posts: 2,600
Gold spaceThis member consistently provides reliable informationspace
Joined: May 01, 2006
Location: United States
Posted: November 12, 2006 at 5:29 PM / IP Logged  
well whatever you've heard is totally wrong...loss of 3db??? ROFL!!
normalicy 
Member - Posts: 48
Member spacespace
Joined: March 14, 2002
Location: United States
Posted: November 16, 2006 at 11:10 AM / IP Logged  
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).
What is normal anyway???
cloak559 
Copper - Posts: 215
Copper spacespace
Joined: July 14, 2006
Location: United States
Posted: November 16, 2006 at 2:41 PM / IP Logged  
The space the inverted cone takes up is added into the displacement number...EVERYTHING below the gasket is accounted for...
'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...
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