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silly question |
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Teunos 
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Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1793 |
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 Topic: silly questionPosted: 24 February 2009 at 8:22pm |
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Yesterday i saw a topic in where somebody built some down scaled 1850's to fit 15'' woofers. i've allready tried the search function but now i can't find the topic anymore. Is there anybody who could link me to the topic? help will be appreciated very much. And another question, I've been modeling around with the 1850 to adapt it for 15'' woofers, and i don't know this for sure but I guess the best way to model it is as being an Hyperbolic catedonial horn right? |
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Best regards,
Teun. |
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MikeHunt79
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Joined: 12 February 2009 Location: Bristol, UK Status: Offline Points: 352 |
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Posted: 25 February 2009 at 3:53am |
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I'm not sure, there's a thread on here with lots of hornresp models in, it's got database in the title I think...
I'm sure the looney bin would be there, the thing is you can't choose a random 15" driver, you'd need the one with close specs to the pd1850 I imagine... In hornresp, you'll need to keep the path length the same, but reduce the cross sectional areas, you may even have to re-fold. Or... You could throw caution to the wind and build the scaled down box with whatever driver you fancy and see how it sounds... Your call.  |
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I'm English, and as such I crave disappointment. I actively seek it out.
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Teunos
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Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1793 |
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Posted: 25 February 2009 at 10:53am |
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don't get me wrong but i've read myself into a lot of information before even starting posting on this forum. i know you can't just scale it down and throw any speaker in it, i just want to build an 15'' horn that will have great output untill 45-50 hz in groups of four. now was there some guy on this forum who actuacllt did scale down the 1850 and modified it so the cross sections matched. he loaded them with eminence kappa 15-LFA ( i recognized them immediately on the pics), and i would like to contact him to ask which modifications he carried out as i can;t get my head around certain problems with the fold. the only problem is that i can't find his topic any more, so could anybody give a link to the topic if you knwo what it is? btw, i have a wide variaty of speakers just laying around, so choosing one won't be the biggest problem. But i might be loading them with JBL 2226H, which is suited nicely for hornloaded cabs, and since i still have 8 I'll be building 4 cabs a side.
o yeah, and the data sim of the 1850 in hornrsp simulation topic is way off. how does the gut get to a horn path lenght of 2m10? and an horn mouth of 6000sq cm? it's only 4620
 and he sais it's an exponential horn, while it's actually more an hyperbolic catedonial horn
 The sim of the 186 horn in that topic is way more reliable. |
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Best regards,
Teun. |
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Static Age
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Joined: 14 November 2005 Location: Oxfordshire Status: Offline Points: 1652 |
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Posted: 25 February 2009 at 12:10pm |
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this is the thread with the 15" 1850 variants
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Teunos
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Joined: 23 November 2008 Location: The Netherlands Status: Offline Points: 1793 |
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Posted: 26 February 2009 at 4:06pm |
thank you very very much
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Best regards,
Teun. |
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Static Age wrote: