25hz horn for PD2150/2450 - Page 2 - diyAudio
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Old 19th August 2012, 01:55 AM   #11
GM is offline GM  United States
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Greets!

Your links don't work.

Well, default compression horn design using published specs yields a 19-190 Hz hyperbolic FLH, so you're covered at both ends. Load the attached file into HornResp to get all the design details.

GM
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File Type: txt pd2150_f.txt (419 Bytes, 52 views)
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Old 19th August 2012, 09:08 AM   #12
epa is offline epa  Netherlands
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25 hz seems unrealistic to me.
may i ask what kind of music?
is it for pa?
will you be using 1,2 or 4 per side?

i just put in hr for fun.
1 horn 25hz 2 pi space(outside ground floor) you need a horn 515 mtrs long,system volume 8650ltrs(when bild ~10m3).
if you change it to 35 hz you would need less then half the volume.
grtz erik
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Old 19th August 2012, 09:35 AM   #13
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Plywood in moduls
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Old 19th August 2012, 10:08 AM   #14
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Thanks GM i'll try to take it from there.
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Old 19th August 2012, 02:43 PM   #15
GM is offline GM  United States
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you're welcome!

Hmm, I posted on the other thread, so assumed a 1pi space loading. For an outdoor 2pi loading it needs to be larger, but due to HR's mouth size limitation I had to increase the cutoff to 21.7 Hz, which is still low enough to achieve your stated performance requirement.

GM
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File Type: txt pd2150_2.txt (419 Bytes, 18 views)
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