Beyerdynamic MA 212 User Manual

Different desktop microphone units and microphones
ZA 2

Transparent cover for the operating 
controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . Order # 453.005

ZE 100

Retrofit item for earth-fault control . . . . . . . . . . . . . . Order # 453.781

Frequency response . . . . . . . . . . . . . 55 - 18,000 Hz
Distortion (THD) . . . . . . . . . . . . . . . . 

≤ 0.08%

Signal to noise ratio . . . . . . . . . . . . . -75 dB

Microphone inputs
Characteristics . . . . . . . . . . . . . . . . . . electronically balanced
Input impedance. . . . . . . . . . . . . . . . 600 

Ω

Pre-amplification . . . . . . . . . . . . . . . 1 - 100 mV, adjustable
Phantom power . . . . . . . . . . . . . . . . 0 - 24 V, adjustable for Mic 1 and 2, 
Connection . . . . . . . . . . . . . . . . . . . . 3-pin XLR
Priority control . . . . . . . . . . . . . . . . . Ducking function on Mic 1 and 2, 

0 - -40 dB attenuation, adjustable
first priority for Mic 1 and 
second priority for Mic 2 
over the other inputs

• The source itself has a hum

• The input wiring passes near AC mains 

wiring

• Defect in the unbalanced wiring

• Determine  if the source is defective 

or wired incorrectly and correct

• Reroute the input wiring

• Balanced connection to the input 

source

Hum in the output

• The source itself has a hum

• The input wiring passes near AC mains 

wiring or wiring to lighting dimmers

• There is pickup of RFI (radio frequency 

interferences) from TV transmissions. This
kind of interference sounds like power 
line related buzz, but tends to change in 
character every few seconds due to 
changes in the video image.

• Determine if the source is defective 

or wired incorrectly and correct

• Reroute the input wiring

• Try different cabling or grounding 

techniques. Try to solve the problem 
by using the 0.1 µF capacitor connected
to bypass the shield. Try different 
routing of input and power cables.

• The source output is set too high and the 

gain control of the amplifier is turned way
down to compensate.

• The source itself is distorted.

• Reduce the source output level and 

increase the setting of the gain 
control of the amplifier.

• Try a different source and/or have the

source repaired.

Distortion in the
output

Buzz in the output