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Question about stacked Quad ESL-57

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Which way would you prefer to wire the stacked Quad ESL-57? Parallel or series?

What are pros and cons of each approach?

Follow Ups:

Thanks all!! (nt) - pushpulltriode 14:01:25 01/21/24 (0)
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RE: Question about stacked Quad ESL-57 - 6bq5 12:33:57 01/18/24 (0)
If you do a search in this forum, you will find a number of prior conversations regarding this question.

I strongly recommend series.
There is a 1 Ohm dip in the Treble response that would become 0.5 Ohm in a Parallel configuration. Not many amps will be happy with this...
Happy Listening
I had a set many decades ago... - jeffreybehr 11:48:06 01/16/24 (0)
...and altho at 80YO my memory is not reliable, I'm pretty sure I wired them in parallel.. That's a rather-low-impedance load, but I don't remember having trouble driving them.. Used an Amber 70 IIRC; couldn't afford the better, lower-power poweramps(s).. I recall that the Bedini 25 (?) was popular for that, especially because its power output was low enough NOT to overdrive the 57s into arcing.

Good luck; hardly seems worth the trouble TO ME, but I've surely done crazier things in my 65 years of audiofoolhood.

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