You can use Loudspeaker Speaker wizard with ANY enclosure as long as the segment quantity is met for the particular Loudspeaker Configuration function.
Example, Nd function and Vrc & Lrc can be modified in Loudspeaker Wizard. No segments are used.
Unless you are building something like below, then use parabolic segments.Are you considering additional segments for front loaded horns too? Since the best way to model non-standard horn profiles seems to be a piecewise linear curve fitting approximation using multiple conical segments, having more segments to work with would be nice. 🙏
Conical segments = ALL 4 or more sides expanding.
Parabolic = 2 parallel sides and 2 sides expanding.
Let's say I'm playing around with a design - exponential segment followed by a conical segment. Nice.
Then I start thinking, what if I use tractrix instead of exponential for the first segment. I wonder what that would be like.
Or hyperbolic.
But, bummer ... the moment I do this I lose the second segment.
Then I start thinking, what if I use tractrix instead of exponential for the first segment. I wonder what that would be like.
Or hyperbolic.
But, bummer ... the moment I do this I lose the second segment.
I'm on my phone, but Atc & Ltc can be segment 1, Ap & Lpt can be segment 2 (at least for the TH function), S1-S2 & L12 can be segment 3, S2-S3 & L23 can be segment 4, S3-S4 & L34 can be segment 5, and S4-S5 & L45 can be segment 6.Are you considering additional segments for front loaded horns too? Since the best way to model non-standard horn profiles seems to be a piecewise linear curve fitting approximation using multiple conical segments, having more segments to work with would be nice. 🙏
Now of course, you cannot have an expanding shape within Atc & Ltc and Ap & Lpt. However, if the volume matches your expanding segment that you plan on building, then your results should not be far off.
Example:
12"H x 12"W x 12"D = 1ft3 straight segment.
2"H x 6"H x 12"W x 12"D = 1ft3 expanding segment.
When I said "four segments rather than three" I was proposing an alternative to the tapped horn design suggested by Marcelo (LORDSANSUI) which used segment 4 as a rear chamber port tube and meant that only three segments were available for the horn system itself.
No additional segments have been provided for any loudspeaker type. The maximum number remains at four and is not going to change. It would require a complete re-write to add more.
For the umpteenth time, it's not going to happen.
You cannot do that.
It is however possible to reverse the situation and have, for example, an exponential segment followed by a tractrix segment.
I messed up.
They should be:
[(12"H throat + 12"H mouth) ÷2] x 12"W x 12"D = 1ft3 straight segment.
[(8"H throat + 16"H mouth) ÷2] x 12"W x 12"D = 1ft3 expanding segment.
I couldn't fall asleep until I made the correction.
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Hi David
The problem has been resolved with the new update.
Well done, thanks a lot
The problem has been resolved with the new update.
Well done, thanks a lot
Hi David,
I wanted to ask for a fix to a specific issue I'm having with these schematic diagrams (see both attachments).
I'm slightly colorblind, and certain colors can be difficult for me to differentiate. Specifically, I often struggle to see the red line of the driver diaphragm. (Blends with black line to me)
Could you please add an option to change its color or make it more visibly distinct?
Thanks
I wanted to ask for a fix to a specific issue I'm having with these schematic diagrams (see both attachments).
I'm slightly colorblind, and certain colors can be difficult for me to differentiate. Specifically, I often struggle to see the red line of the driver diaphragm. (Blends with black line to me)
Could you please add an option to change its color or make it more visibly distinct?
Thanks
Attachments
Hi Tachi778,
I decided at the very beginning not to include user-selected formatting options in Hornresp. Sorry, but I would still rather not do so.
I decided at the very beginning not to include user-selected formatting options in Hornresp. Sorry, but I would still rather not do so.
One in 10 men are colour blind to some degree. We have a policy where I work that requires all visualisations to be CB accessible.
Or make the line thicker. While I'm not colour blind I find it harder to differentiate between similar colours of thin (1 pixel) lines, compared to thicker lines. If the black lines are kept the original width and the red etc. lines are made thicker, they would stand out more easily.
Would it be sufficient just to make the driver and passive radiator lines thicker as suggested by Dr Kolbrek, and as is already done for band pass systems?
Tooltip-type information is already provided.
The example below shows the comment displayed when the mouse pointer is moved over the pink line representing a passive radiator diaphragm.
The driver file data format was changed with the release of Product Number 5620-240707 to make it consistent with the standard record file format. The change was undocumented at the time because it made no difference to the operation of Hornresp either way.
It is unfortunate that BOXPLAN can no longer import Hornresp driver data but I would prefer to leave the formatting as it currently is.
Hi all, I am in the process of selecting a driver suitable for a transmission line. I plan to build an enclosure based on Ekta-TL by Troels with necessary mods to accommodate the selected driver.
And I just can't figure it out what makes a driver suitable for a transmission line.
I simulated a couple of drivers and they mostly just do not perform the way I would expect. I want a good bass extension, good sensitivity, and short TL, yeah.
At first I selected SB Acoustics SB20PFCR30-8. And I got F6dB=38Hz F3dB=46Hz Sensitivity=91.4dB. Which is crap.
Then I read a report by Perry Marshall that says a good driver should have: large Qts, large Mms and large BL.
So I simulated Wavecor WF223BD02 which has it all, or so I thought, large Qts, large Mms and large BL. And I got F6dB=32Hz F3dB=39Hz Sensitivity=89.6dB. Not bad, but still way below the expectations from such a great driver.
So I simulated the driver that Troels put originally in the Ekta-TL enclosure, the ScanSpeak 18WU/4741T00, which is just the opposite of Wavecor- small Qts, small Mms, small BL. Theoretically should not work at all. Yet I got F6db=30Hz F3dB=35Hz Sensitivity=91dB. Which is excellent.
All speakers were sumulated in the same TL enclosure. But I do not understand why Scanspeak performs that well.
Why does this Scanspeak perform that well?
What parameters should I be looking at when selecting a driver suitable for a TL?
Why the the optimum TL length is not l/4 ?
And I just can't figure it out what makes a driver suitable for a transmission line.
I simulated a couple of drivers and they mostly just do not perform the way I would expect. I want a good bass extension, good sensitivity, and short TL, yeah.
At first I selected SB Acoustics SB20PFCR30-8. And I got F6dB=38Hz F3dB=46Hz Sensitivity=91.4dB. Which is crap.
Then I read a report by Perry Marshall that says a good driver should have: large Qts, large Mms and large BL.
So I simulated Wavecor WF223BD02 which has it all, or so I thought, large Qts, large Mms and large BL. And I got F6dB=32Hz F3dB=39Hz Sensitivity=89.6dB. Not bad, but still way below the expectations from such a great driver.
So I simulated the driver that Troels put originally in the Ekta-TL enclosure, the ScanSpeak 18WU/4741T00, which is just the opposite of Wavecor- small Qts, small Mms, small BL. Theoretically should not work at all. Yet I got F6db=30Hz F3dB=35Hz Sensitivity=91dB. Which is excellent.
All speakers were sumulated in the same TL enclosure. But I do not understand why Scanspeak performs that well.
Why does this Scanspeak perform that well?
What parameters should I be looking at when selecting a driver suitable for a TL?
Why the the optimum TL length is not l/4 ?