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In Reply to: How does one input At in AJ-Horn for tapered BLH which have no coupling chamber? posted by freddyi on March 9, 2007 at 09:47:27:
“assuming At ~zero looks significantly different in simulation than picking At around Sd.what is the best way to look at/interpret and define rear load horn which taper for accurate AJ horn simulations? without confidence, there is not much point in simulation.â€
1: At is dependent on BL
2: BL and mass set Fo
3: L remains constantBy increasing BL and mass you can make a longer horn with the same mouth area.
If At is = to Sd you can vary fs to load horn.
As the mass gets lower the higher the cut-off of the horn.
If a high frequency horn, directivity is affected by At, hence BL and Mass ratio.
You can use the front chamber as a filter in a rearload horn to shorten horn to a degree.
I have found AJ is around 80% accurate.
Bill
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Follow Ups
- Re: How does one input At in AJ-Horn for tapered BLH which have no coupling chamber? - RCA-fan 03/9/0714:49:15 03/9/07 (1)
- Re: How does one input At in AJ-Horn for tapered BLH which have no coupling chamber?- when RU opening.. - freddyi 15:43:43 03/9/07 (0)
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