12 inch woofer vs. 13 inch woofer vs. 15 inch woofer - AVS Forum
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post #1 of 5 Old 11-17-2008, 05:27 PM - Thread Starter
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I've read many comparisons pitting SVS vs. HSU vs. Epik vs. etc...

However, I haven't read, nor have been able to find any reviews showing any benefits of one size woofer over another.

What benefits are there going with say a 12 inch woofer vs. a 15 inch woofer or a mythical 13 inch woofer? - never heard of such a thing before. Better extension? Lower bass with higher SPL? Or are there any benefits? Why would one manufacturer choose one size woofer over another? (Probably just a guess here unless someone works for a Sub manufacturer)

I'm currently looking at the SVS Ultra, SVS PB12-Plus, HSU VTF-3 MK3, HSU ULS-15, AV123 MFW-15, Epik Castle, Epic Tower, and Epic Conquest.

I had it narrowed down to 2 until I started reading back here at the forums! Thanks AVS Forum for letting me know about all these wonderful choices. By the way, if anyone has any opinions on the 8 I have it "narrowed down to" please let me know.

Thanks!
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post #2 of 5 Old 11-17-2008, 05:34 PM
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dont concentrate on the driver size ...
it's all about which can move the most air (in a linear way) BUT

driver size is but one factor ...
there's driver excursion
enclosure design
etc.

basically, you need to look at the overall performance and not a specific part of the subwoofer (unless all other factors are the same)

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post #3 of 5 Old 11-17-2008, 05:45 PM - Thread Starter
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Quote:
Originally Posted by ribbit View Post

dont concentrate on the driver size ...
it's all about which can move the most air (in a linear way) BUT

driver size is but one factor ...
there's driver excursion
enclosure design
etc.

basically, you need to look at the overall performance and not a specific part of the subwoofer (unless all other factors are the same)

Thanks for the reply.

I know some people here have done SPL and Hz graphs for most (if not all) of the subs I listed above. Has anyone done any measurements of air movement by any of the listed subs? Or is that related to SPL? Aka High SPL = High air movement?

How does air movement work with sealed subs, such as the HSU ULS-15? Wouldn't a ported sub move significantly more air than a sealed sub?
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post #4 of 5 Old 11-17-2008, 05:56 PM
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in a sealed sub, the driver basically produces ALL the frequencies
in a ported sub, the port helps produce a set of frequencies depending on the port area, length and enclosure volume

again, we cannot generalize that a ported sub can move more air than a sealed sub

there are ground plane tests done by AVTALK and Home Theater Shack you can use to compare to each other (ground plane to ground plane)

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post #5 of 5 Old 11-17-2008, 06:00 PM - Thread Starter
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Quote:
Originally Posted by ribbit View Post

in a sealed sub, the driver basically produces ALL the frequencies
in a ported sub, the port helps produce a set of frequencies depending on the port area, length and enclosure volume

again, we cannot generalize that a ported sub can move more air than a sealed sub

there are ground plane tests done by AVTALK and Home Theater Shack you can use to compare to each other (ground plane to ground plane)

Got it. Thanks. I'll check out AVTALK and Home Theater Shack.
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