Trapezoidal ESL Drivers

MrPin · 12th January 2006, 06:40 PM

I was wondering if anyone could confirm my theory that a Trapezoidal ESL Driver would be able to handle higher frequencies better then a rectangular driver and still be able to produce low ranges to about 350 Hz well while remaining under 8 inches in width.

MJ Dijkstra · 13th January 2006, 08:12 AM

No, horizontal dispersion of high frequencies will change along its length. The narrow upper parts will disperse more than the bottom. I don't think that you want this kind of dispersion.
Bass can be improved and that's the reason to build such structure.

MrPin · 13th January 2006, 05:23 PM

Yes, I can see how this might become an issue. My main reason for this is that I am trying to stay as small width wise as possible. I plan to handle the bass with a separate dynamic driver, so bass really isn’t an issue.

Bazukaz · 13th January 2006, 05:55 PM

Narrow and high drivers reproduce high frequencies better, if they are positioned in the level of ears. But bass reproduction is even worse then...

MrPin · 13th January 2006, 06:16 PM

Yes, thats why I was thinking that a trapazoid shaped driver would work for this. it would only be a small increase from the width of the top to the width of the base.

Bazukaz · 13th January 2006, 06:41 PM

I think that there will be not much difference between rectangular and trapezoid driver.
I have seen an interesting sketches of round bipolar enclosures to use with ESL... I don't know if it works well.

12th January 2006, 06:40 PM	#1
MrPin diyAudio Member Join Date: Nov 2005 Location: calgary	Trapezoidal ESL Drivers I was wondering if anyone could confirm my theory that a Trapezoidal ESL Driver would be able to handle higher frequencies better then a rectangular driver and still be able to produce low ranges to about 350 Hz well while remaining under 8 inches in width.

13th January 2006, 08:12 AM	#2
MJ Dijkstra diyAudio Member Join Date: Apr 2005 Location: Utrecht	No, horizontal dispersion of high frequencies will change along its length. The narrow upper parts will disperse more than the bottom. I don't think that you want this kind of dispersion. Bass can be improved and that's the reason to build such structure. __________________ drs M.J. Dijkstra

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13th January 2006, 05:23 PM	#3
MrPin diyAudio Member Join Date: Nov 2005 Location: calgary	Yes, I can see how this might become an issue. My main reason for this is that I am trying to stay as small width wise as possible. I plan to handle the bass with a separate dynamic driver, so bass really isn’t an issue.

13th January 2006, 05:55 PM	#4
Bazukaz diyAudio Member Join Date: Nov 2005	Narrow and high drivers reproduce high frequencies better, if they are positioned in the level of ears. But bass reproduction is even worse then...

13th January 2006, 06:16 PM	#5
MrPin diyAudio Member Join Date: Nov 2005 Location: calgary	Yes, thats why I was thinking that a trapazoid shaped driver would work for this. it would only be a small increase from the width of the top to the width of the base.

13th January 2006, 06:41 PM	#6
Bazukaz diyAudio Member Join Date: Nov 2005	I think that there will be not much difference between rectangular and trapezoid driver. I have seen an interesting sketches of round bipolar enclosures to use with ESL... I don't know if it works well.

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