Originally Posted by Michael_Joly
capsule diaphragms are tensioned and brought up to resonance specification then baked in an oven and re-tested.
It is very interesting information. Usually, the diaphragm is baked BEFORE bringing to the resonance--the process called "cold relaxation". I have no idea why do they do it after tensioning, but maybe the fact the diaphragm resonant frequency is lower than usual Neumann style capsules, might be an answer.
Out of a few dozens of Oktavas 219 and 319, which came through my bench just for last half a year for modifications and capsule re-tuning, I can say that despite the fact Russian components can have as much as up to 50% tolerance (esp. capacitors), the diaphragm tuning is pretty uniform and they do a good job on that.
Overall, the capsule as it is was definitely designed to work with resonators to compensate for early roll-off—the reason why many folks actually prefer the sound of original mic, with resonators intact. However, unlike many other microphones, this capsule's particular design gives a lot of room for modifications and ability for fine-tuning and room to allow refining its tonal balance and overcoming its original "dark" qualities, to suit variety of applications.
As far as electronic parts concerned, their sonic quality is particularly bad. In fact, if one replaces the Russian components for ANY more or less quality parts, it already by itself is a big improvement on the way of turning this mic into a quality piece.
Overall, there is a great potential in those microphones. Without cheesy comparison with other expensive mics here is a raw track just on its own merit—the Oktava 319 specifically voiced and fine-tuned for this specific singer. Universal Audio pre (set to flat response, and compressor bypassed), Apogee Rosetta, into ProTools session. No EQ or any processing: http://home.comcast.net/~markfuksman...tavaModded.wav
Best, Mark Fouxman