Ribbon ESLs?

Spasticteapot · 1st March 2007, 09:18 PM

Would an ESL still work if it were made as a "ribbon", with a single strip of membrane attached only at the ends between two stators?

bigwill · 1st March 2007, 09:20 PM

I was also considering this for dispersion reasons. I think it would work well. I think you'd need a small baffle either side, as well as some kind of membrane support every so often along the panel.

stokessd · 1st March 2007, 11:52 PM

No it will not work, unless it's very short. The charge on the diaphragm is pulling the diaphragm to one of the stators. the only force to prevent the diaphragm from getting glued to the stator is the diaphragm tension. If it's only held by the top and bottom, and it has any tension, then it will roll up side to side.

A ribbon with no signal has no destabilizing force, but an ESL does. That's why the diaphragms are highly tensioned and held on all sides.

For stability the supports should be less than 100 or so stator spacings.

Sheldon

1st March 2007, 09:18 PM	#1
Spasticteapot diyAudio Member Join Date: Jan 2006 Location: Wisconsin....what did you expect?	Ribbon ESLs? Would an ESL still work if it were made as a "ribbon", with a single strip of membrane attached only at the ends between two stators?

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1st March 2007, 09:20 PM	#2
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	I was also considering this for dispersion reasons. I think it would work well. I think you'd need a small baffle either side, as well as some kind of membrane support every so often along the panel.

1st March 2007, 11:52 PM	#3
stokessd diyAudio Member Join Date: Nov 2002 Location: Fort Wayne, IN	No it will not work, unless it's very short. The charge on the diaphragm is pulling the diaphragm to one of the stators. the only force to prevent the diaphragm from getting glued to the stator is the diaphragm tension. If it's only held by the top and bottom, and it has any tension, then it will roll up side to side. A ribbon with no signal has no destabilizing force, but an ESL does. That's why the diaphragms are highly tensioned and held on all sides. For stability the supports should be less than 100 or so stator spacings. Sheldon

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