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Old 18th March 2008, 04:06 PM   #1
Tenson is offline Tenson  United Kingdom
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Join Date: Feb 2006
Location: Kent
Default Esl 57


Anyone know where I can find an off-axis response plot of the ESL 57? Someone has asked me to make a pair of tweeters to match them and I can only find what I want for the ESL63!

Thanks for any help!
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Old 19th March 2008, 04:06 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK

Reasonable horizontally and poor vertically from what I recall seeing.

Matching would be difficult, possibly pointless ?

In other words a tweeter running over the last octave could be set
at a levell that fills in but not fully compensates vertically whilst
being lower level on

conjecture though...

FWIW IMO a Neo3PDR used dipole (without the rear chamber)
might be a good option, response is very overdamped / low Q
open backed and it would only need a simple c/o.


Click the image to open in full size.

Make sure the treble can be driven and the treble panels have not lost sensitivity
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Old 19th March 2008, 05:20 PM   #3
pedroskova's Avatar
Join Date: Dec 2002
Location: C'ville VA, USA
I seem to remember people using Decca ribbons, but it may have been with stacked panels.
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Old 19th March 2008, 05:38 PM   #4
Tenson is offline Tenson  United Kingdom
diyAudio Member
Join Date: Feb 2006
Location: Kent

I already have plans for what to do in terms of making it, I just need off-axis plots. I did find some but they are poorly scanned and hard to read. Will do though.
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