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Hornresp 1850 Plots- Done correctly? |
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FlipC 
Young Croc 
Joined: 25 October 2007 Status: Offline Points: 666 |
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 Topic: Hornresp 1850 Plots- Done correctly?Posted: 21 September 2008 at 8:55am |
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Wanted to see if I got this right. Using the Dayton DVC 3585-88 15" driver. Here's the info:
Ang: 2Pi S1: 480 S2: 6000 Exp: 210 Vrc: 54.5 Lrc: 36 Vtc: 2340 Atc: 1150 Driv  er Sd: 829.6Cms: 2.37E-04 Mmd: 288.62 Re: 2.8 Bl: 16 Rms: 6.83 Le: 1.82 I do this correct for said driver? My SPL Response chart, while not a flat response with single , isn't bad when done with 2 speakers. Can someone post their graph so I can compare?  |
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Mark James
Old Croc 
Joined: 15 January 2006 Location: rig side Status: Offline Points: 5306 |
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Posted: 21 September 2008 at 9:09am |
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1850 needs an 18" driver!
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insert silly sentence here
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MarjanM
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Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7845 |
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Posted: 21 September 2008 at 10:49am |
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How in the name of Jesus you got the idea to use that driver in a 1850 horn?
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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FlipC
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Joined: 25 October 2007 Status: Offline Points: 666 |
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Posted: 22 September 2008 at 4:08am |
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Cause they are sitting around.
And all I am doing is running numbers. Jeez... Anyone want to run them and A- tell me if the numbers I posted are the correct way to do the 1850 and also to post your plot(s) Single speaker and dual speakers. Tx |
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mobiele eenheid
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Joined: 15 August 2004 Location: Netherlands Status: Offline Points: 1563 |
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Posted: 22 September 2008 at 12:59pm |
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Hornresp now models horns with offset drivers, like the 1850 horn, that should
be more appropiate.
As far as can be told from looking at the picture:
The horn mouth is to large, especially because you're using the exponential flair, the horn flairs to fast near the mouth. Model the horn as multiple conical segments.
Horn length should be axial thus at least less than 2 metre. Vtc could be doubled (at least).
In case you're using the offset driver method (models quite similar to placing S1 right in front of the driver for non-affset) download the latest version to prevent the latest error. You can use a Vtc of 5000, S2 is right in front of the driver.
The modelled volume (see schematic diagram) should be no more than 365 litres.
Regards Johan
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dj-panoramix
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Joined: 28 September 2005 Location: France Status: Offline Points: 462 |
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Posted: 11 March 2010 at 4:53pm |
i know it's a little beat old but what is S1 then ?
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mobiele eenheid
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Posted: 11 March 2010 at 5:25pm |
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For an off-set horn that's correct. In case there's a single mm of surface area left that would mean S1 = 60 cm^2.
Best regards Johan
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airbell
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Joined: 11 June 2009 Location: Berlin, Germany Status: Offline Points: 287 |
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Posted: 11 March 2010 at 11:46pm |
 Ermm , 1mm> S1=6cm²....~60cm x 0,1cm = 6cm² I think Hornresp cant calculate 0cm² or too low numbers for that whyever, that may can explain somebody else. But you can use 0cm² and the programm is calculating with the lowest area thats possible. There is a warning message but you can ignore it. with that you will have the most realist result thats possible. |
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mobiele eenheid wrote: