Final-Audio New Series electrostatics

@madtrader I'm not really sure it would be responsible of me to share the two tracks that caused arcing in my M35s.  I have no idea if there is something specific about that music/recording that might damage other speakers.  It is possible there is clipping or square waves or something specific to the music.  Anyhow, the first time it happened I was entertaining an audiophile who wanted to hear orchestral music at "realistic" levels which for him meant well over 90 dBc, much louder than I normally listen.  The second track I was playing with peaks in the high 80s I would guess, again loud but not something that I felt was inappropriate for the music.  Remember live symphonic or jazz performances frequently have peaks over 100 dB.

This track has unusually deep and reverberant bass guitar and it caused buzzing in one of the panels and it was probably playing in the mid 80s dBC.  I imagine dBA would be at least 10 decibels less and when music is this bass heavy it often needs to be played at a louder SPL to sound correct to our ears.  I suspect any speaker that had a low frequency resonance might vibrate to this track.  https://open.qobuz.com/track/2574377

This second track is one of my standard reference tracks and I never heard an issue with it until I tested some cables a friend lent me that have a much more pronounced bass response and I heard buzzing in the left panel in the first 20 seconds of the song on the plucked cello (?).  I don't hear that on my second system or earbuds so I assume it is the panel but I would be curious how you hear it.  That is with peaks around 83 dBC slow.  https://open.qobuz.com/track/11235714

I am a big fan of the M35's bass response which is much better than the Magnepan 20.7s.  However I do use subwoofers that I think are well integrated.  But when I played this track I felt the bass was a little too prominent so I muted the subs and I was surprised to find the very low nearly subsonic bass didn't just diminish, it simply didn't exist anymore.  It points out the limits of even well designed electrostatics and I suspect quite a lot of conventional designs as well.  My guess is that unless you have subs or speakers that go down into the mid 20 Hz region you won't even know that there is information there.  https://open.qobuz.com/track/127028098  And that track doesn't cause any problems I hear with my M35s. 

As I said, I have had my M35s for 7 months and played more than 1000 hours of music and I have only heard issues with those 4 tracks.

@pinwa  I was at an audiophile society gathering a few months ago and we were listening to different genre of music favorites through a great system consisting of Luxman monobloc’s and Quad I believe 2729 speakers.  The music presented was some of the best I had heard it.  One member suggested a specific bass track be played and when the host played it at a moderately loud volume, there was a loud, scary "flapping" kind of resonance coming from the speakers !  We were all surprised and it was fortunate that the host muted it immediately.  Luckily, there appeared to be no damage to the speakers, but the host was particularly unnerved about it.  Apparently, there is a low frequency resonant point on those speakers that the specific cut of music hit.  The host said he had never heard that on anything he’s played, and he’s had these speakers for a few years.  I have the Final Model 12+’s and am still in the 350 hour break in process, but I haven’t experienced that with my M12+’s even playing Bela Fleck’s "Flight of the Cosmic Hippo" fairly loudly.  I’m surprised at the bass output of these M12+’s and so far, am very pleased with the sound.  I hope I don’t run into any arcing when playing loudly !  

Hi All...  Just thought I'd post a picture of my M12+'s in my listening space...  I special ordered them with the clear panels and really like them that way.  

How do we get to the photos?   

Thanks @pinwa , for the tracks.

I also appreciate seeing other owners out there (although mine haven't arrived yet). I wondered how the market penetration has been. I've seen almost no coverage of Final's speakers aside from mentions or slightly more than mentions in show coverage. I did run into one of the professional reviewers at CanJam Dallas last year. We were standing in line waiting a turn at the Warwick Acoustics (electrostat headphone brand) isolation box/booth. This guy said he'd heard them at one of the shows and wanted to get a pair in to review, just hadn't gotten that worked out yet. Hopefully that arrangement does and that there are more.