Beyerdynamic MA 206 - Handbuch (Seite 37)

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37
4. Connections
4.1 Microphone inputs
On the rear there are three XLR-connections (14). The microphone connection
is balanced (pin 2+3 AF, pin 1 shield). For each input the input gain (1 - 100 mV) can
be adjusted on the rear. The input volume is adjusted on the front using the volume
control (1). The microphone inputs 1 and 2 can be switched to priority (refer to
chapter “4.1.1 Priority switching”).
Caution:
All balanced microphone inputs have an adjustable phantom power from
0 to +24 V. If you connect devices with unbalanced outputs switch off the
phantom power or add a coupling capacitor. If condenser microphones and
devices with unbalanced outputs are used simultaneously we recommend
to switch off the phantom power according to the used input.
4.1.1 Priority switching
The priority of the privileged microphone inputs is voice-controlled (ducking
function). The unit is delivered with this function being deactivated.
If the ducking function is desired, the bridge resistors on the printed circuit board
have to be soldered (refer to chapter “9. Top view of the printed circuit board”). The
programme fades out when someone is speaking into the microphone connected to
one of the privileged microphone inputs. The ducking function is also activated,
when the input control is turned down (if a microphone is connected, the switch of
the microphone must be switched to the “Off” position). Possible microphones are
a handheld mic or a desktop microphone unit.
Microphone 1 has priority over microphone 2. Both microphones fade out
microphone 3 and the auxiliary input. The fade-out can be adjusted from 0 to
-40 dB on the printed circuit board (refer to chapter “9. Top view of the printed
circuit board”).
4.2 Auxiliary inputs
On the rear of the mixer amplifier there are two adjustable separate RCA
(phono) connections for input and one RCA (phono) connection for the record
output. The connections are unbalanced and suitable for stereo carriers (L + R are
internally switched together via an impedance matrix). The master signal from all
inputs is available at the record output; independent of the equalisation (bass and
treble) (3) and the master volume control (4).