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Old 1st August 2007, 09:26 AM   #1
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Default 80Hz and up fullrange cabinet?

Hi,

After comparing the sound from a pair of bottle speakers with Tang Band W3-871s and a pair of Cyburgs Needles with the same drivers, I've become interested in a subwoofer-assisted fullrange system. The clarity of the bottle speakers was greater, which I suspect is due to the additional bass-handling duties of the drivers in the Needles. (Not to knock the Needles, they're my favorite speakers ever.)

I'm shooting for an 80Hz crossover frequency. I'd like to use the natural rolloff of the cabinet of the fullrange speakers, and most likely an active subwoofer lowpass.

A couple of questions:

* What is the ideal cabinet style for this sort of bandwidth-limited fullrange? Sealed boxes, rather than horns, I imagine. Not sure though, which is why I ask.

I've read that horn designs give better driver control. Besides that, horns look interesting and are a good conversation starter, which IMO is a definite plus. So:

* Are there horn designs that go down to 80Hz, but no further? Is a horn design beneficial if the intent is only going down to 80Hz? My ideal cabinet would be a small 'bookshelf' horn that rolls off at 80Hz.

Thanks!
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Old 1st August 2007, 09:32 AM   #2
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I would go for a sealed cabinet, easier to integrate well with a sub and no below-resonance unloading to worry about.
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Old 1st August 2007, 11:44 AM   #3
hm is offline hm  Europe
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Default SAT-Horns

Hello kristleifur,

my horn-sats are made for ~100 Hz and subs:

http://www.hm-moreart.de/1.htm
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Old 1st August 2007, 12:06 PM   #4
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Thank you richie00boy and hm.

@hm: Your designs are completely weird, and I love them! BTW I'm planning to build your double-3" horn when I feel more confident in my building skills. I'm too curious about it not to.

A question:
Does the horn-sat require an 8" driver? My hope was use cheap 3" drivers.
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Old 1st August 2007, 12:58 PM   #5
hm is offline hm  Europe
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Thanks,
for 3" take as a sat :

http://www.hm-moreart.de/12.htm
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Old 1st August 2007, 01:20 PM   #6
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I also like the sealed approach. That is what I did with my FE127E Sealed Bipole. It works very well with a subwoofer. I have used natural roll off with good success, but I prefer an active XO.
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Old 2nd August 2007, 12:44 PM   #7
Geoff H is offline Geoff H  Australia
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Yep, if you want to stay compact, sealed is how I'd go.
However, I'd roll off slightly higher than the natural rolloff of the widerange, and adjust the bass x-o to match.

There are horns that go down to 80. Not going to fit on a bookshelf though.

Geoff.
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Old 2nd August 2007, 01:31 PM   #8
el`Ol is offline el`Ol  Germany
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The Ciare HX132 should work sealed down to 80 Hz and is not too expensive.
http://www.ciare.com/pdf/catalogo/HX132.pdf
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Old 3rd August 2007, 12:44 PM   #9
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Thanks, everybody.



Quote:
Originally posted by Geoff H
There are horns that go down to 80. Not going to fit on a bookshelf though.
Interesting, still. Unusual speakers are preferable to small speakers Got any designs you could name, or links?
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Old 5th August 2007, 02:07 PM   #10
Geoff H is offline Geoff H  Australia
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You could start here:

http://www.diyaudio.com/forums/showt...15#post1143115
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