subwoofer vs ib subwoofer

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=108029
Printed Date: May 03, 2024 at 5:33 AM

Topic: subwoofer vs ib subwoofer

Posted By: meh66
Subject: subwoofer vs ib subwoofer
Date Posted: October 09, 2008 at 8:02 AM

I wanted to know how could I look at a woofer and be able to know if it is an IB woofer or one that should be used in a box? Does IB (Infinite Baffle) mean the same thing as free air?

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MEH66
"Car Performance and Mobile Electronic Enthusiats"

Replies:

Posted By: megaman
Date Posted: October 09, 2008 at 9:07 AM

You can't just look at a sub and determine if it's IB or not. It's gonna look exactly like it's boxed counterpart. The spec sheet will tell you if it's IB or not.

Yes, Infinity Baffle is the same as Free Air.

Posted By: meh66
Date Posted: October 09, 2008 at 12:37 PM

Thanks Megaman.....here are the specs of the woofer. Dayton said it could be used in a free-air because the QTS is high. In my reading of these terms..I would think that the VAS would be better reference...but I am new at understanding about speaker measurements.

SD215-88 8" DVC Shielded Series Subwoofer Specifications

Power Handling: 80 watts RMS/120 watts max
VCdia: 1.5"
Le: 1.2 mH
Impedance: 8 ohms per coil
Re: 3.00 ohms
Frequency range: 30-2,000 Hz
Fs: 28 Hz
SPL: 89.0 dB 2.83V/1m
Vas: 1.40 cu. ft.
Qms: 3.40
Qes: .47
Qts: .41
Xmax: 6 mm
Dimensions:
Overall Diameter: 8-1/2"
Cutout Diameter: 7-1/8"
Mounting Depth: 4-1/4"

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MEH66
"Car Performance and Mobile Electronic Enthusiats"