I have had 6 speakers in the lsst 5 years. Recently I bought Martin Logan latest 11-A Loudspeaker With a active 24bit crossover, dual powered woofers per cabinet premium parts And upgraded throughout . I have done mods for years
The only thing I could find was just upgrade 3 capacitors to premium Mundorf,
And clarity caps, stock sounded very good ,after mods better still. 91 db efficient for a Electrostat panel is very respectable.
My seating means 4 ft distance needed for others L to R and the so called sweet spot As with Any speaker is in the Middle. Having 1/3rd of the panel curved gives a much wider window then a flat panel. The speed of the panel is 2nd to none .
$10k retail is not cheap but I got them for under $8k in cherry cabinet. and with Bass drivers firing front and rear per speaker 550watts per side 2 ICE amps per cabinet with Bass room correction taking the room out of the equation with midbass,as well as low bass adjustments in room Bass to around 26hz in my room is very respectable, and SPL levels over 110db possible which is severe ear damage level which I will never play at .
The realism and involvement is far better then Anything they have made previously .Designed still in the U.S,and hand built in Canada. I had up to $16k to spend
And I could not be happier with my decision. One thing they won't do though is sugar coat a poor recording. You will hear even more so any distortion artifacts ,that being said a average or great recording puts you pretty close to the event.