ALso the woofer is off centered.
Making a centered woofer at the top would be trivial
CAD and then CnC could provide the exact panels, inclined trapezoid
There are some good ideas.
But be aware that I already have the daytons and that the hight should be about 30 inch.
But be aware that I already have the daytons and that the hight should be about 30 inch.
Within the context of moden TL design, Bailry’s triangualr line is a TL.
The problem with Bailey's is his first article where the title and the end product example are not the same thing.
Title: describes an aperiodic line with no outout at the terminus and. a completely flat impedance curve.
As built: A line that uses the fundamental quarter-wave eigenmode to enhance bass extention with a partially damped impednce curve.
And the proiblem is that there are very strong adherents that think "Title=As built:” and further that nothig else can be a TL.
Further: I have been watching this thread with interest: ifind your fiolding kinda strange. All the bends thou are good as high-filtering.
dave
The line ChrisABC posted is archaic and misses a lot of modern tricks.
Aclassic nRadford folding,
dave
Aclassic nRadford folding,
dave
The foldings might look strange. These are just attemts to fit 95 inch evenly tapered into the given dimensions. I would be glad to see other suggestions.
The mouth at the bottom enhances bass better than at half hight. But what is better soundwise?
The mouth at the bottom enhances bass better than at half hight. But what is better soundwise?
I hadn’t added anything before being pinged, since i hadn’t hadnalook atb whatb youare trying todo.
It looks like a stepped taper. What are the numbers?
You’d likeit to be 25 cm wide nd the total line is?
350cm² to 138cm², 248cm length. Zv seems to be atbthe end, what is Zd? Terminus area? That specifies an even taper but ll you lines seem to be stepped.
2.5m seems long.
dave
It looks like a stepped taper. What are the numbers?
You’d likeit to be 25 cm wide nd the total line is?
350cm² to 138cm², 248cm length. Zv seems to be atbthe end, what is Zd? Terminus area? That specifies an even taper but ll you lines seem to be stepped.
2.5m seems long.
dave
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Looks far toomlong andn insufficient cross-section (just a guess from experience)
Looked at the sims, it doesn’t seem to go that low, and the impedance is strange.
dave.
for inspiration (too tall)
Neil Blanchard
8" SB Acoustics SB23NRXS45-4
https://audiokarma.org/forums/index.php?media/albums/transmission-line-speaker-designs.1650/
Neil Blanchard
8" SB Acoustics SB23NRXS45-4
- Mechanical Q-factor, Qms 5.55
- Electrical Q-factor, Qes 0.32
- Total Q-factor, Qts 0.3
- Equivalent volume, Vas 87.5 liters
https://audiokarma.org/forums/index.php?media/albums/transmission-line-speaker-designs.1650/
You are the experienced guys.
You examined my last try which has indeed a very small starting cross section. So unfold as a long pipe this looks strange indeed.
The other tries start at 400cm which is not so much more.
If I remember correctly I read of a thumb rule where the starting cross section should be 1 to 2 times of sd and the mouth 0.5 to 0.7 of sd.
But that might be totally wrong.
I just tried to refold XRK's 2 way tml which is a proven design.
If I unfold it correctly this tapers evenly from 440 to 137 and is 247cm long.
It sure is easy to do a single fold tml as this is only math in hornresp or akabak. If a good calculated tml is not tocbe fold into my dimensions I have to look for some other design like BR.
When I am sitting on my couch my ears are at 30 inch high. So I stick to an enclosure hight of about 30 inches. Ther will be 4cm granite base under the box and the horns are 12cm high. Gives 35 inch for the horn center/tweeter.
The hight of the enclosure is my irrefutable restriction
You examined my last try which has indeed a very small starting cross section. So unfold as a long pipe this looks strange indeed.
The other tries start at 400cm which is not so much more.
If I remember correctly I read of a thumb rule where the starting cross section should be 1 to 2 times of sd and the mouth 0.5 to 0.7 of sd.
But that might be totally wrong.
I just tried to refold XRK's 2 way tml which is a proven design.
If I unfold it correctly this tapers evenly from 440 to 137 and is 247cm long.
It sure is easy to do a single fold tml as this is only math in hornresp or akabak. If a good calculated tml is not tocbe fold into my dimensions I have to look for some other design like BR.
When I am sitting on my couch my ears are at 30 inch high. So I stick to an enclosure hight of about 30 inches. Ther will be 4cm granite base under the box and the horns are 12cm high. Gives 35 inch for the horn center/tweeter.
The hight of the enclosure is my irrefutable restriction
Following with interest.
I'm too interested in a different folding of XRK Dayton's rs225 TL.
I've got different requirements than Spassgeneral though: mine is related to driver being higher possible on the front ( to reduce CTC spacing to next driver), and max box height of 90 cm and port located in front and close to ground.
I will try to simulate N.Blanchard's one with the driver i own (rs225/8) thanks to ChrisABC. 👍
I'm too interested in a different folding of XRK Dayton's rs225 TL.
I've got different requirements than Spassgeneral though: mine is related to driver being higher possible on the front ( to reduce CTC spacing to next driver), and max box height of 90 cm and port located in front and close to ground.
I will try to simulate N.Blanchard's one with the driver i own (rs225/8) thanks to ChrisABC. 👍
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