Monday, April 17, 2017

Beyer M 55



It sounds so natural and full and silky smooth.


So this is possibly a microphone that gives flat frequency responce from source, vocal chords, etc to listener's brain.


And this whether it be a voice at 1in from the moving coil diaphragm or the tolling of a bell hundreds of meters away. It sounds the same in real time whether one listens through the headphones or taking them off and listening to reality. No bass, treble exaggeration, just silk midrange and smooth full sound at all the brain perceived frequency domain.


Thank you Trashblitz for your helpful excellent review.


And gearslutz for the helpful discussion and spec sheets.


Congratulations to the designer of the world class microphone.


Setup, signal path:


Quiet Easter ambience - Beyer M55 - Canford inline stepup input transformer with 413mH primary inductance - Pleiades V4 with 3V measured anode potential (coupling Capacitor from Canford transformer to EF183 grid is 220nF, Resistor from anode to grid 3M9, cathode connected to ground (-), anode connected to g2 to g3, anode Resistor ie load resistor is 10K, output coupling Capacitor 1uF, Vbattery=3.4V, Vheater=3.4V supplied from the same battery) - mic input of Realistic 32-1101A disco mixer - Sennheiser HD 580 - listener's mind



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