HT: scale 10" sub cabinet for 12" driver? - diyAudio
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Old 26th April 2003, 02:53 AM   #1
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Default HT: scale 10" sub cabinet for 12" driver?

I would like help in how to scale the DecWare WO subwoofer (horn-like) cabinet from it's 10" driver to one for a 12" driver.
The driver I am thinking about is the Vifa M30WO-49-08

http://www.decware.com/wicked1.htm

Click the image to open in full size.
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Old 26th April 2003, 09:23 PM   #2
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Default C'mon ?

Somebody must know this?

Please! :-)
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Old 27th April 2003, 08:59 AM   #3
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Sorry Brad, you can't just scale up horns, they have to be designed for the driver. Do a search for horns or horn loading to find loads of threads that deal with this.

BTW, that horn looks like it has a very small mouth for a sub- what is it's response like?
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Old 27th April 2003, 10:39 AM   #4
ksl is offline ksl  Estonia
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i heard that this box is so-called "TV-SHOP" product?
unfortunately, haven't heard it playing
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Old 28th April 2003, 06:22 PM   #5
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What does "TV-Shop" mean?
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Old 28th April 2003, 07:50 PM   #6
ksl is offline ksl  Estonia
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like a WAY overpriced shop of unuseful things
http://www.tv-shop.com
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Old 6th May 2003, 03:46 AM   #7
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Default overpriced ???

Decware charges $50 for the plans including a full scale blueprint of the cabinet layout. How do you figure WAY overpriced?
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Old 6th May 2003, 09:52 AM   #8
ksl is offline ksl  Estonia
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i am a little suspicious about the design. they are giving you the blueprints for 50 bucks but what's inside the box? do they give you some formulas for your VIFA speaker to calculate the exact volumes for the enclosures?

but you can give ashot and purchase the plans.

we are trying to scale the design down for a 5" here in estonia for old russian speakers and then i can tell you about this universal WO
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Old 8th May 2003, 07:37 PM   #9
ksl is offline ksl  Estonia
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but give a shot! build it!
interesting is, that this one, that is for sale, is a horn-type, but the one http://www.decware.com/whorn.htm is a ?????? bandpass+horn???? i'd like to hear some comments about this design also
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Old 8th May 2003, 07:54 PM   #10
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Quote:
Originally posted by ksl
i'd like to hear some comments about this design also
Well it is not a horn. It is a sealed box with front loading of the drivers (similar in concept to subs that have a closely placed baffle in front of the woofer. The pipe in front is going to have some nasty undamped resonances, but they may be high enuff that used as a sub they mostly get suppressed by a steep active XO. Personally i would be quite leary of this without hearing it -- and i suspect it is fairly driver sensitive so scaling it would be a big can of worms.

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