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Multi-Way Conventional loudspeakers with crossovers

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Old 30th August 2008, 06:54 AM   #1
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Default Help me design a horn

the sub woofer :

Maelstrom-X 18"

http://www.diycable.com/main/product...roducts_id=681

Amplifier :

Lt/1300

http://www.edesignaudio.com/product_...roducts_id=500

was looking for this setup to get low for a home theater setup but still be able to play the occasional music on it... have descent output... along with min distortion... so a sql setup? i think a horn would do me well .... suggestions or help would be great
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Old 30th August 2008, 10:28 AM   #2
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This thing would likely not work very well in horn, IMO.

EBP is only ~39. Horns need at least 100, the more, the merrier (though eg LABhorns get away with 56). Bl is not very good also, considering the enormous moving mass. It would probably sound pretty floppy in a horn. But the main problem is that such horn would be truly enormous in size. I would rather recommend a pair (or quartet) of LABsubs, corner loaded they would be extremely loud, clear and go well into 30-s. You can also V-couple them or augment with "barn door" extensions, a là Funktion One Infrahorn.
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Old 30th August 2008, 01:27 PM   #3
MaVo is offline MaVo  Germany
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Try a tapped horn, see subwoofer forum for them.
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Old 30th August 2008, 04:13 PM   #4
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looking to just do a singal subwoofer setup any thoughts?
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Old 30th August 2008, 04:34 PM   #5
gedlee is offline gedlee  United States
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First thought - DON't. Single subs never work, you need multiple subs for any decent bass performance.
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Old 30th August 2008, 05:05 PM   #6
GM is offline GM  United States
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Quote:
Originally posted by technofreak
This thing would likely not work very well in horn, IMO.

EBP is only ~39. Horns need at least 100.........
Sorry, but with a low Fs and ~80 Hz mass corner its specs are quite good for an HT/music sub horn. Increasing its motor strength (lower Qe) just raises its mass corner/HF BW, which isn't required for an HT app.

I agree that multiples should be used though, so dividing such a large horn whether FL, BL or TH up into a number of smaller ones 'kills two birds with one stone', winding up with semi-reasonable sized bandpass subs that will sum good enough in-room down into the infrasonic BW where many of today's action movies have enough LFE to justify ultra low tunings.

GM
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Old 30th August 2008, 05:16 PM   #7
gedlee is offline gedlee  United States
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Quote:
Originally posted by GM
I agree that multiples should be used though, so dividing such a large horn whether FL, BL or TH up into a number of smaller ones 'kills two birds with one stone', winding up with semi-reasonable sized bandpass subs that will sum good enough in-room down into the infrasonic BW where many of today's action movies have enough LFE to justify ultra low tunings.

GM
Precisely correct!
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Old 30th August 2008, 05:40 PM   #8
MaVo is offline MaVo  Germany
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Quote:
Originally posted by GM
...to justify ultra low tunings.

GM
Hi GM, what frequency do you mean with "ultra low"?
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Old 30th August 2008, 06:03 PM   #9
GM is offline GM  United States
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Greets!

Below 20 Hz, at least to 16 Hz to cover the low B pipe organ symphonies.

GM
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Old 30th August 2008, 06:14 PM   #10
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Just a slight correction. That would be a low C 32 foot stop. Organs don't have a low B pedal
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