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Multi-Way Conventional loudspeakers with crossovers

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Old 2nd September 2013, 04:13 PM   #9261
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Quote:
Originally Posted by POOH View Post
. . . A good bass horn loaded with a high quality driver is where to look . . . A carefully matched example of this is a better compromise then just using direct radiator 15's in my experience.
Don Keele did an objective study comparing horn to direct radiators some years back:
http://www.diy-audio.narod.ru/litr/K...orns_vs_DR.pdf.

He concluded that 4 direct radiators will match or beat an (UNfolded) horn of the same mouth/baffle size, and do so with less complexity and smaller enclosure size.
Once folding comes into play, direct radiators have the edge IMHO.

I'm by no means opposed to horns (nor is Keele). If the drivers chosen happen to be extremely expensive, or if you can only get two drivers (and can spare the room, time, effort and expense needed for a giant horn) I'd say go for it.
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Old 2nd September 2013, 04:22 PM   #9262
Jmmlc is offline Jmmlc  France
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Quote:
Originally Posted by Tubamark View Post
Don Keele did an objective study comparing horn to direct radiators some years back:.
Hello,

That's a very old littérature. Many improvement have been made on horns and waveguides since that ancient time! (even at JBL...)

Best regards from Paris, France

Jean-Michel Le Cléac'h
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Old 2nd September 2013, 06:33 PM   #9263
Scott L is offline Scott L  United States
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Default Bad, man

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Originally Posted by badman View Post
I think you're treading on clouds fella- this disease is terminal
Your really bad, man

When I bit this bug 41 years ago I had no idea !

Actually, to be more accurate, what I meant to say is the "last reference" speaker.

I still have drivers stored all over the place; driveritus !!
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Old 3rd September 2013, 01:26 AM   #9264
nuconz is offline nuconz  United States
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Originally Posted by Scott L View Post
We pretty much agree, except I think there is a point to where a horn is too large and we arrive at the law of dimishing returns. Just too big, bulky and
too much wood suseptable to resonating.
it seems to me that when you talk about horns you are considering something unmovable and possibly hidden. consider this one.

Wall of Sound Images
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Old 3rd September 2013, 03:04 AM   #9265
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Originally Posted by nuconz View Post
it seems to me that when you talk about horns you are considering something unmovable and possibly hidden. consider this one.

Wall of Sound Images
Or for extra headroom (much much more acoustic power than a large concert sound system), a pair of these large stadium speakers. A 40X15 degree CD horn. Radiating as if they were one source in time and space are 12, 18 inch horn loaded woofers, 32, 51/2 inch horn loaded mid drivers and 64 hf compression drivers.
You can literally walk into the horn (playing quietly of course)and you never hear any clue there is more than one driver, zero comb filtering.
best,
Tom
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Old 3rd September 2013, 03:20 AM   #9266
Pano is offline Pano  United States
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Quote:
Originally Posted by Tom Danley View Post
....12, 18 inch horn loaded woofers, 32, 51/2 inch horn loaded mid drivers and 64 hf compression drivers
Yikes! I don't won't to ask the price of that one.
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Old 3rd September 2013, 04:08 AM   #9267
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How many acoustic watts will that horn system radiate?
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Old 3rd September 2013, 08:28 AM   #9268
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Originally Posted by Jmmlc View Post
Hello,

That's a very old littérature. Many improvement have been made on horns and waveguides since that ancient time!
The context being addressed is horns using large midbass cone drivers. Very very little has changed there.

-- Mark
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Old 3rd September 2013, 12:37 PM   #9269
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If you want deep bass with low distortion to match up with your direct radiator speakers use multiple big sealed or vented cabinets.

If you want to match up low midrange and bass to your horn loaded compression driver use a front loaded midbass horn.

It's true then and now so you are correct.

some info http://www.hps4000.com/pages/special...distortion.pdf

Last edited by POOH; 3rd September 2013 at 12:44 PM.
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Old 3rd September 2013, 01:03 PM   #9270
Scott L is offline Scott L  United States
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Default very good

Quote:
Originally Posted by POOH View Post
If you want deep bass with low distortion to match up with your direct radiator speakers use multiple big sealed or vented cabinets.

If you want to match up low midrange and bass to your horn loaded compression driver use a front loaded midbass horn.

It's true then and now so you are correct.

some info http://www.hps4000.com/pages/special...distortion.pdf
Thank you for that !
And, I need to add one more detail which I have been leaving out:
The one Altec driver that is (short) horn loaded will be driven by a different amplifier than the one driving the 2 (or 4) augmenting 15's, BUT
at the same time being fed from the same output of the active crossover.
In this manner I can EQ the augmenting drivers without messing up the purity of the Altec.
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