Wierd. I just jogged the LRC around a bit and it seemed to eliminate the problem..... *headscratch*
In the first simulation the offset delay correction is 0.0 msec whereas in the second it is 11.2 msec.
Attachment 1 compares the phase responses when both are given a delay of 0.0 msec.
Attachment 2 compares the phase responses when both are given a delay of 11.2 msec.
Attachments
how does one adjust delay time? like I said all I did was jostle the LRC around and it fixed the issue.
From the Phase Response window, select Tools - Delay, and adjust the slider.
Probably has something to do with this quote from Hornresp help -
I don't look at phase much in simulations, it is whatever it is and there's not really a "correct" phase to shoot for in a sim. For that reason I haven't explored in depth what Hornresp is doing with phase correction, I just don't care at this point. But from some posts I've seen, it might be correcting in "steps", where small changes in a sim can result in major changes in reported phase.
I have no need to know about phase response UNTIL AND UNLESS I build something and want to integrate it with other speakers. At that point I just measure the phase, not simulate it. I guess that means the simulated Phase Response graph is just about useless to me, except for instances like comparing the relative phase responses of two different designs or alignments.
Having said all that, I have no idea why adjusting length of the rear chamber would make any difference in phase at all.
Generally I dont pay attention to the phase either... I happened to open that tab up for the first time on the wonky sim (and I was a bit shocked). checked all the other sims and had nothing similar so I was kinda wierded out.
Would it be possible to set the driver behind the mouth in a backloaded horn with Hornresp and simulate the combined response?
- Status
- Not open for further replies.