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assuming At ~zero looks significantly different in simulation than picking At around Sd. (Armin Jost's webpages show "Veich" horn with At = Sd)what is the best way to look at/interpret and define rear load horn which taper for accurate AJ horn simulations? without confidence, theres not much point in simulation.
Lyeco 401 specs as At is varied from 0.055 sq.cm In Steps
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“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.”
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
---Horn-School? - or horn-meet with video?thank you very much Bill.
($500/per 2 hour long class for dummies like myself might not be enough to offset the miseries involved -?)
I had trouble making AJ look like MJK's predictions and not sure whatdid wrong with regard to specifying the throat on a horn which comes to a point at the beginning. Armin had "Veich" input with AT=Sd rather than around zero.
80% seems very good - are front load midbass and bass horns easier to predict than rear load or not?
what's happening on the AH front for hifi and MI/pa horn?
btw ran a $12 ~2.2% efficient sammi 8 in this today - good for me (?) - did these things appear in Canada?
Greets!Assuming it calcs like MJK's, just set Fc as infinitesimally small, then input At, etc., with whatever you want.
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