ESL enclosures

Has anybody ever seen an enclosed ESL?

I have never seen this subject tackled or discussed, i have never even heard of an enclosed ESL.

Has anyone ever seen an enclosed ESL? Anybody know why ESL's have no enclosure?

Ive dont alot of searching, but i have yet to find anything that addresses this topic.

I see that when using dynamic drivers, the point of the enclosure is to trap the rear radiating sound waves to prevent cancellation of the lower frequencys. Then there are loudspeakers with dynamic drivers like the AAlon Lotus Elite which only uses a baffle for the mids and highs, but no enclosure.

just about everything i have read will state the point that without the enclosure the non-directional frequencys cancel eachother out, thus resulting in the lack of bass.

Could placing an ESL in an enclosure extend the lower frequencys of the driver as in dynamic? Or does the resulting damping interfere with the ESL's preformance?

From the construction techniques used for ESL drivers, it should be difficult to ensure the box is air tight with the driver installed.

When it boils down to it, the actual driver motion of an ESL is no different than that of a dynamic driver. The membane vibrates forwards and backwards just as a dynamic drivers cone. Its just the process of causing the movement that really differs.

Any takers on this one?