box around ESL - Page 2

a.wayne · 27th August 2009, 03:52 PM

Quote:

Originally Posted by arend-jan

I get the impression that you don't completely understand what I'm saying.

But let me turn the question around.
What do expect to gain by putting an ESL in a box?

Increased Dynamic output due to low frequency attenuation .....

fivestring · 28th August 2009, 12:23 PM

ESL in a box:

http://www.janszenloudspeaker.com/

oshifis · 28th August 2009, 01:11 PM

Planar speakers are dipole sources, generating velocity waves. Boxed speakers are omnidirectional sources, generating pressure waves. I think theoretically it is possible to span a diphragm in front of a closed box, but since the effective mass of the diaphragm is very low, you would need a huge box so that it does not restrict low frequency cutoff. In any case, you will lose "openness", the greatest benefit of dipole speakers.

a.wayne · 28th August 2009, 04:39 PM

Remember if enclosing you do not need the same size panel , you will be able to use a panel that is some 50 % smaller , Hence a smaller box than would be necessary if you had envision enclosing a large dipole...

justice strike · 31st August 2009, 09:48 AM

so enclosing a ESL would have advantages.

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28th August 2009, 12:23 PM	#12
fivestring diyAudio Member Join Date: Apr 2008 Location: Brezno (Abyss)	ESL in a box: http://www.janszenloudspeaker.com/

28th August 2009, 01:11 PM	#13
oshifis diyAudio Member Join Date: Mar 2004 Location: Budapest, Hungary	Planar speakers are dipole sources, generating velocity waves. Boxed speakers are omnidirectional sources, generating pressure waves. I think theoretically it is possible to span a diphragm in front of a closed box, but since the effective mass of the diaphragm is very low, you would need a huge box so that it does not restrict low frequency cutoff. In any case, you will lose "openness", the greatest benefit of dipole speakers.

28th August 2009, 04:39 PM	#14
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Remember if enclosing you do not need the same size panel , you will be able to use a panel that is some 50 % smaller , Hence a smaller box than would be necessary if you had envision enclosing a large dipole...

31st August 2009, 09:48 AM	#15
justice strike diyAudio Member Join Date: Aug 2009	so enclosing a ESL would have advantages.

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