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Old 30th December 2007, 06:00 PM   #1
lbg is offline lbg  Denmark
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Question Dual drivers in 1 horn.

Hi

I am thinking about 2 Monacor SP-80X side by side in 1 box.

If possible one off the Spawn Family horns http://www.frugal-horn.com/spawn-plans.html

Cons ? dont work :-)

Pro ? more DB
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Old 30th December 2007, 06:23 PM   #2
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Can't say, without any information about the driver[s].
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Old 31st December 2007, 03:03 PM   #3
lbg is offline lbg  Denmark
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I am a newbie so just tell me if it an bad idea

http://www.monacor.dk/produkter/hoej...257&no_cache=1
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Old 31st December 2007, 03:17 PM   #4
Svein_B is offline Svein_B  Norway
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The short answer: It is generally not a good idea to run two fullrange speakers in parallel. It crates uneven frequency responses.

The model you propose is probably not the best choice among the Monacor drivers, unless you already have them.
The reasons are lack of published T/S parameters (such as Vas and Qts), and a little troublesome frequency response.

SveinB.
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Old 31st December 2007, 03:21 PM   #5
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http://www.thehornshoppe.com/model2.html
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Old 31st December 2007, 03:37 PM   #6
Svein_B is offline Svein_B  Norway
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Quote:
Originally posted by Peter M.
http://www.thehornshoppe.com/model2.html
It does not help even if the guy who made them is called Ed, and has a collection of firearms
It is still not a very good idea.

See attached graph. As you move off-axis you loose parts of the frequency range due to comb-filter effects.

SveinB
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Old 31st December 2007, 04:25 PM   #7
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Right. Ed's a bright bloke, and I enjoy our occasional (lively) debates, but you can't beat the laws of physics. Lobing is going to occur. On occasion, you might get away with it. But I prefer not to risk it in the first place.

As noted, sadly, the data sheet for those Monacors is valueless, because it basically doesn't give any.
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Old 31st December 2007, 08:54 PM   #8
chrisb is online now chrisb  Canada
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Svein / Scott - you should know better than to invoke "inviolate laws of nature", and mathematical modeling programs of any flavor in the same post as E'd name

BTW - ask him if he has a playlist of favorite demo tracks he'd be willing to share with you.



Now, if one was to bipole load a single BLH with small FR driver, how would that model ? If so, then I've got CAD sketches for such a design concept that are carbon dated at least 5yr ago.
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Old 31st December 2007, 09:20 PM   #9
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Quote:
Originally posted by Peter M.
thehornshoppe model2
The only stand out there are the optional grills....


Click the image to open in full size.

dave
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Old 31st December 2007, 10:23 PM   #10
ronc is offline ronc  United States
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you can't beat the laws of physics\

Unless you change the laws.

ron
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