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free air

Old 02-27-2007, 02:27 PM
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free air

can any sub be used as a free air woofer like this one
MANUFACTURER Clarion
MODEL PXW1252
WATTS MAX 1000W
WATTS RMS 500W
OHMS 2x4
DB 88.08
FREQ RANGE N/A
OTHER INFO Poly/Alum Dust Cap
Kevlar/Paper Comp Cone Design
High Excursion Surround
Dual Magnet Motor Assembly
Vented Pole Piece
Dual Gold Plated Terminals
Poly-cotton Spider w/Int. Leads
Spider Exhaust Cooling
Die Cast Aluminum
Hidden Screw Gasket
Mounting Depth 6-1/8"
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Old 02-27-2007, 02:38 PM
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Lightbulb

Yes any sub can be used IB. No they won't all do it well or last long.

You need to post the T/S specs to at least get an indication of whether this woofer would be suitable.
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Old 02-27-2007, 02:39 PM
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Ya need to look at t/s params of the woofer.
But more or less any sub can be "made" to work IB. Some are better for it. Look for t/s specs and high Q driver.
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Old 02-27-2007, 03:50 PM
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Also keep in mind a free air sub will generally handle less power then in an enclosure.
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Old 02-27-2007, 03:55 PM
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I would say instead of looking for a High "Q" you should choose one that suits your taste. If you follow the butterworth crowed then look for a "Q" of .707.
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Old 02-27-2007, 04:05 PM
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FS 34.27
QMS 7.15
VAS 62.76L 2.216CuFt
MMs 117.2
Xmax 12mm
Sd 0.0504
Qes .62 Series .726 Par
Re 7.192 Ser 1.978 Par
Le 7.206 Ser 1.786 Par
Z 8.63 Ser 2.374 Par
Bl 17.59 Ser 8.53 Par
Qts .571 Ser .659 Par
DB 88.08
Vd .15CuFt


Hope that helps
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Old 02-27-2007, 06:29 PM
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FS is a bit higher than ideal.
VAS is somewhat lower than ideal.
Qts is ok depending on who you ask.

I would say yes... I've heard subs that were theoretically completely wrong work really well in IB. If you want any output tho I would use at least 2, and have a lot of power on tap. Yes, IB can lower power handling, but nothing is controlling the cone other than the amp. I went from 250wrms, to 500wrms, to 1400wrms on my MTX 7000's IB and it sounded better every time. You just need to be smart with the volume control.
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Old 02-27-2007, 06:33 PM
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And a vehicle that lends itself to the application.
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Old 02-27-2007, 07:12 PM
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would be in a eagle talon 2 would be in a box and one not
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Old 02-27-2007, 07:49 PM
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2 would be in a box and one not
^ yea... don't do that...
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