Hello,
I have a question regarding the throat flare rate, there are several topics on the drivers, but I do not find an answer on the choice of the output angle.
In the book "Acoustics" Leo Beranek, he talks about the best ratio between membrane surface and exit hole.
In EV notes, the mismatch between horn and driver, I tried to search the internet, but there is not much literature on the subject.
In practice, I use the R-H ssd5600 drivers with for now, the horn associated cbh 250-6.
These drivers have a half exit angle of 6.9 ° degree.
I simulated the horn with hornresp,
the curves provided by the software are similar with R-H datasheet.
I want to make a horn larger, but if I keep the angle of the first part of the horn (S2), more or less similar as the cbh 250-6, for this match, the exit throat, even with a horn that is 50 centimeters longer,
there's always that same fall, the low frequencies.
Apparently if I want a very flat curve, I have to reduce the half angle at about 2.2 ° degree.
The QUESTION is: what is a mistake to want to change the angle of the phasing plug, suitable for the horn,
What kinds of problems could sustain, resonance, yield loss.
Any of you would have done tests in this direction?
Best Regards
Stefano
I have a question regarding the throat flare rate, there are several topics on the drivers, but I do not find an answer on the choice of the output angle.
In the book "Acoustics" Leo Beranek, he talks about the best ratio between membrane surface and exit hole.
In EV notes, the mismatch between horn and driver, I tried to search the internet, but there is not much literature on the subject.
In practice, I use the R-H ssd5600 drivers with for now, the horn associated cbh 250-6.
These drivers have a half exit angle of 6.9 ° degree.
I simulated the horn with hornresp,
the curves provided by the software are similar with R-H datasheet.
I want to make a horn larger, but if I keep the angle of the first part of the horn (S2), more or less similar as the cbh 250-6, for this match, the exit throat, even with a horn that is 50 centimeters longer,
there's always that same fall, the low frequencies.
Apparently if I want a very flat curve, I have to reduce the half angle at about 2.2 ° degree.
The QUESTION is: what is a mistake to want to change the angle of the phasing plug, suitable for the horn,
What kinds of problems could sustain, resonance, yield loss.
Any of you would have done tests in this direction?
Best Regards
Stefano