Hi sbank
the Quad 57 manual can be downloaded from here.
https://www.manualslib.com/manual/407327/Quad-Esl-57.html?page=2#manual
The 57 is unique and is a different speaker from the 63 both in the way it sounds and the way it is constructed. As far as construction, the way it was explained to me by Kent at Electrostatic Solutions years ago, and also a local fellow here in Canada that repairs ESL's
The 57 is durable and tolerant of humidity changes - dry to humid conditions. The '63 with its different build, is not, and if subjected to continued high humidity will break down. Actually come apart.
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So that part of the 57 manual says.
It goes on to say.
Now in actual listening where it counts; I have always listened since the late 70's when I was in my teens, to 2 channel in near field with cone speakers well out from the front wall. I have owned 7 ? different Planars/ESL's , still own 3 ESL's and all have benefited from being well out in the room if possible.
Cheers Chris
the Quad 57 manual can be downloaded from here.
https://www.manualslib.com/manual/407327/Quad-Esl-57.html?page=2#manual
The 57 is unique and is a different speaker from the 63 both in the way it sounds and the way it is constructed. As far as construction, the way it was explained to me by Kent at Electrostatic Solutions years ago, and also a local fellow here in Canada that repairs ESL's
The 57 is durable and tolerant of humidity changes - dry to humid conditions. The '63 with its different build, is not, and if subjected to continued high humidity will break down. Actually come apart.
**************************
So that part of the 57 manual says.
The radiation of the sound waves from both the front and back of the speaker should be restricted as little as possible.
It goes on to say.
If the speaker needs to be close to a wall it should be angled so that reflections are not returned trapped. For example one end of the speaker could almost touch wall provided the other end was say two feet away.The above assumes a wider room imo, where the speakers are angled in quite a bit at the listener. I Interpret this paragraph as - you can make it work - if you do this, but , for it to work good and really good means, putting them out there - don't be shy - 8^) away from the front wall. This is how I interpret "the back wave being restricted as little as possible "
Now in actual listening where it counts; I have always listened since the late 70's when I was in my teens, to 2 channel in near field with cone speakers well out from the front wall. I have owned 7 ? different Planars/ESL's , still own 3 ESL's and all have benefited from being well out in the room if possible.
Cheers Chris