Monday, November 26, 2018

Beyer M55 types


An excellent sounding omnidirectional moving coil microphone.


There are many variations according to period of manufacture.


This is a very rough guide.


Older types are chrome with grey cable and dual impedance. Typically the low Z pin measures 180Ω, hi Z around 40-80? KΩ. For some strange reason some may be inverting, so phase attention is required unless one may like to use the noise canceling effect of 2 omnis out of phase, see Lou Bouroughs microphone book.


Newer types are black. Impedance usualy 470Ω.


There are also chrome ones with black cable. Dual mpedance but low Z was measured 470Ω.


A chrome one was found which is 500Ω.


They all sound excellent with no bass heaviness and nice unhyped treble. Great midrange. No s problems. No pop problems. No handling noise.


They sound great connected to Sony TC-D5 Pro, to Uher 4200 report, to a Pleiades V4 front end battery powered electron type amplifier.










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