high frequency Hornresp simulation

[70145]

I am trying to simulate a simple 1" tweeter in a horn and I cannot find my error that is causing the HF rolloff. I tried to basicially eliminate the horn with an almost 180deg beamwidth but the 0 Deg SPL above 4KHz is still lower than the tweeter with no horn loading. I know I am doing something wrong but I just can't find it.

All help/any suggestions are much appreciated!

 

[70145]

quick clarification, hope this helps

The 0 Deg SPL above 4KHz is still lower than an actual half-space measurement of the tweeter with no horn loading.

 

[David McBean]

I am trying to simulate a simple 1" tweeter in a horn and I cannot find my error that is causing the HF rolloff.

The conical horn profile is expanding too rapidly. Try the following:

S1 = 8.00
S2 = 12.00
L12(Con) = 0.50

 

[70145]

Thanks so much for your reply, David.

That worked. Now I just need to go back in the direction of my desired horn directivity and frequency response.

Do you have any suggestions for reading material that summarizes HF horn design without the heavy math? Maybe something like "HF Horn design rules of thumb"? 🙂

thanks again for responding

 

[David McBean]

Thanks so much for your reply, David.

That worked. Now I just need to go back in the direction of my desired horn directivity and frequency response.

Do you have any suggestions for reading material that summarizes HF horn design without the heavy math? Maybe something like "HF Horn design rules of thumb"? 🙂

thanks again for responding

Hi leadcoma,

Sorry, I am not aware of any reading material that applies specifically to HF horn design.

Kind regards,

David