DEVICE DESCRIPTIONS
PROMATRIX System User Handbook 1.1 5-11
5.1.6 MIC/LINE + 2 AUX Input Module (NRS 90216)
This 2-channel audio input module is meant for the
connection of external audio sources of any kind.
Channel A employs two switched AUX-inputs with 4
RCA-type connectors (2 x L / R) for CD players, tape
decks, tuners, DAT decks, etc. The MIC / LINE-input of
channel B is provided through an XLRF-type connector
allowing the connection of microphones, mixers and other
similar sources. The module can be inserted in slot 1 and
slot 2.
Input levels of both AUX-inputs can be separately
adjusted via internal potentiometers in a range between –
10 dBu to +12 dBu.
The MIC / LINE-input's sensitivity can also be adjusted
through an internal MIC / LINE switch (PAD) providing 30
dB attenuation. The GAIN-control on the appliance's rear
panel offers additional control within a range of 40 dB.
The MIC / LINE input is electronically balanced and can
be retrofitted with a transformer. Phantom power can be
switched via a jumper. If necessary, it is also possible to
incorporate a compressor / limiter into the audio path via
jumper setting.
The input channels can be switched separately to the
monitor bus and you can listen to the signal via
headphones or loudspeaker, either which is being
connected to the monitor output.
DPM - M LA
B
AUX
IN 1
AUX
IN 2
A
L R
GAIN
90 2 16
M IC/
L IN E
IN
figure 5.11 MIC/LINE + 2 AUX input module
Specifications:
description DPM-MLA MIC/LINE + 2 AUX input module, NRS 90216
connections 1 x XLRF-type / 4 x RCA-type connectors
input A 2 x AUX, unbalanced, internally summed
nominal input level -10 dBu ... +12 dBu / 250 mV ... 3 V
max. input level +12 dBu / 3 V
input impedance 10 kΩ
input B MIC/LINE, electronically balanced, transformers are optionally available
nominal input level MIC: -54 dBu ... -14 dBu / 1.5 mV ... 155 mV
LINE: -24 dBu ... +16 dBu / 50 mV ... 5 V
max. input level MIC: +5 dBu / 1.4 V
(im limiter operation) LINE: +30 dBu / 25 V
input impedance MIC: 3.6 kΩ
LINE: 10 kΩ
input balancing > -30 dB
phantom power 24V / 20 mA, switched via jumper
audio
frequency response 20 Hz ... 20 kHz, ± 0.5 dB
S/N ratio > 95 dB (A-weighted)
distortion < 0.01 %
A/D-conversion 18-bit linear, Sigma-Delta
power consumption 2.3 W
operational temperature range +5 °C ... +40 °C
dimensions W x H x D 37.5 x 81 x 252 mm
weight 160 g (173 g including NRS 90233)
extensions NRS 90233 input transformer for 1 MIC/LINE input, order-No. 121 682
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