Are there any problems associated with using a Quad ESL-57 upside down? - diyAudio
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Old 30th April 2015, 11:02 PM   #1
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Default Are there any problems associated with using a Quad ESL-57 upside down?

As question . . .

With stacked ESL-57s, the lower speaker is upside down, the upper one is the right way up; would this cause any problems with the one that is upside down?

I ask this not because I plan to stack ESL-57s but because I am considering suspending two of them.
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Old 1st May 2015, 12:08 AM   #2
Dr Jim is offline Dr Jim  United States
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Other than all the blood rushing to your head might tend to congest the upper-midrange?

Oh, you mean the speakers....

Since the Quad 57's drivers are vertically oriented, inversion shouldn't produce gross problems in their radiation pattern, but I'd be concerned about the effects of the rain of dead bugs, zombie dust bunnies, and coating flakes that could result from suddenly inverting a 50 year old electrostatic.

I'd also make <very> sure that both transformers were physically restrained by a mounting more secure than a brittle, aging circuit board - remember, "Stuff happens, but pooh-pooh occurs..."


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Old 1st May 2015, 12:10 AM   #3
6L6 is offline 6L6  United States
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No problems at all. Google 'Stacked Quad 57"

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Old 1st May 2015, 01:36 PM   #4
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Looks like a HQD System 30 years ago
Hartley Woofer
Quad Mid
Decca Ribbon
Driven with ML 2 And Source Goldmund Studio with T3F Arm, ML Preamp an some x-over
Poor Mans Wilson WAMM
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