Nope, this project was abandoned... honestly just got bored in setting up the algorithms and moved on to other things in life.

I'll try to make it to this one, haven't been in years and need to hear more headphones. Maybe bring my DIY electrostatic stuff again.

How's long term durability been for everyone with anti-static cleaner spray?   I've been listening to the same pair of my DIY headphones many hours just about every single day for the last 3.75 years, and nothing has gone wrong except they're now up to a 5-10 warm up period for the coating to...

  When the two stators are at the same potential, then there would be no field anywhere in the system if the diaphragm were removed. However, remember that the diaphragm is charged to a high positive potential (accidentally said negative in my previous post). If you have stators at 0V...

  A diaphragm with no tension is inherently unstable. Precisely inbetween the two stators, equal force pulls it in both directions since the distance to the two stators is the same making it quasi-stable in that position. Due to manufacturing tolerances, it will not be precisely in the middle...

  Food film generally doesn't work well, it's too stretchy and permanently deforms before it has sufficient tension for use in an electrostatic driver. So yes, I would say you didn't have enough tension and probably couldn't get enough tension with the material you used.

  This is all true, however the only thing affecting capacitance here is surface area of the film/stators, and the distance between the film and the stators. Coating material or thickness does not affect capacitance (of course you have to reach a certain amount of coating in order to actually...

I'll probably come if the weather is too bad for spring mountaineering. Maybe bring some of my electrostats.

I also have some SR-X mk3 with an imbalance. When they arrived one of the diaphragms was stuck to a stator (a failure mode I see in a lot of old electrostats). I took it apart and very carefully peeled it off causing only one spot of minuscule damage to the diaphragm, not a tear. The balance was...

  I have never experienced any evidence that higher bias affects the sound in any way. It simply increases the volume with a lower signal voltage on the stators.

  It is for all practical methods impossible to make the output of an amplifier become adjustable bias by adding an external box. This is because the output impedance is very high, so you cannot simply add an adjustment potentiometer.   It is easy to make your own adjustable bias supply...

  I used 0.5mm styrene sheet to hold diaphragms in my early days of electrostatic headphones, it is not strong enough. Perhaps if you were to use a really thick rim it could, I was using about 7mm as the widest. It works alright if you never disassemble anything (the pressure of the driver...

Humidity affects the coating material while in use, not while coating (at least as far as I've experienced and can conceive of). It also seems to accelerate the wear on DIY coatings. The pros have it figured out well enough that the coating isn't going to just go bad... at least not for most...

  Tube dampers make my Svetlana's ring a lot less, good enough that it doesn't interfere with listening (it did before, super loud ringing)

  A distinct sharp pop with electrostatic headphones is not a good sign at all, generally indicates either arcing or extreme diaphragm instabilities.   But a "woosh" or gentle slap is very normal and not at all a problem.

  Yes, the BHSE has true differential input into a topology that remains fully differential throughout. But, the single ended input is just as good according to most people. It immediately converts the single ended to differential at the input stage. If you hear a difference, it's probably in...

    That is not even remotely what I meant. I'm simply letting people know that stator PCB's do not make it an "easy kit". There could be a lot of misunderstanding.

Unless tensioning jigs, coating materials, adhesives, and known mylar is included in the kit, people need to realize that it takes a LOT of trial and error and experience to get diaphragms tensioned and coated in a way that will last a long time and stay stable at a desired bias voltage. It is...

  Well that could easily do it... pads set 90% of a headphones sound at least for electrostats

With regard to the power being "dirty" or "underpowered" at the end of a daisy chain, it is completely inconceivable that mains power was sufficiently distorted to cause an audible difference in a room with a 60-70db noise floor. If anything on the mains could cause distortion that competes with...

  I see no compelling reason to match any tubes in this amp. DC offsets can be trimmed out, and there is global feedback setting the overall gain. I have unmatched tubes in my Blue Hawaii currently because I don't have a full quad available. DC trim was only off by a few volts when I lost half...

May have missed it a while ago but what exactly is this MB tube people are discussing?

  How could a square wave rectified output possibly affect the sound through the bias voltage of electrostatic headphones? It's charging up a DC supply cap through a voltage multiplier, and then there is no-load placed on the capacitor (the diaphragm draws no current - if it did, electrostatic...

Been burning these tubes in basically 24/7 for 1.5 years on my DIYBH. I think I won't leave my amp on when I'm not home anymore! Music turned to crackles, shut it off. Replaced the wrong tube first (hence the lack of dampers). Since it's CCS fed and won't get damaged anyways, I turned it back on...

  Moon audio has them, http://www.moon-audio.com/stax-cable-mount-5-pin-din.html   If anyone knows the part number on this, I really really really want to know how to actually order them from a manufacturer! All the part numbers for both genders that were discussed some 3-5 years ago on...