Auditronics 2600, Техническое руководство

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2600 / May 2001
M O N O M I C I N P U T M O D U L E
Mono Mic Input Module
(MM-2600)
Module Overview
MM-2600 modules are for microphone input signals (-50dBu nomi-
nal). Each module accepts two mono sources: A and B, switched at the top
of the module.
Phantom power is available at both input ports; it may be selectively
activated by a dipswitch SW1 pos 2 (the factory default is OFF). Recessed
front panel multi-turn trimpots (range 38dB) adjust the level of the A and
B inputs independently.
Example: with a microphone input of –60dBm @150
Ω
at the port, gain
trim can set levels from -22dBu to +16dBu (note maximum preamp gain is
+76dB).
An analog insert point (-10dBu unbalanced) is provided: it is post-trim
and may be internally bypassed, which is the factory default setting.
Output switches assign the selected source signal to any combination
of the console’s four outputs: two stereo outputs—PGM (program) and
AUD (audition); and two mono outputs—MONO and PRE.
Level is set by a long-throw fader.
The channel ON and OFF switches are at the bottom of the module.
In addition to being controlled remotely, these can also be programmed
(via dipswitch) to perform a variety of console control functions, includ-
ing activating control room and studio mutes, talkbacks, external tallies,
and timer restart.
All audio and control input and output signals are made via a multi-
pin DB-25 connector mounted on the top of each individual module and
located underneath the hinged meterbridge.
MIC GAIN TRIM
A
B
ASSIGN
OFF
D
I
P
S
W
N O
AUD
MONO
I/O
PGM
PRE
W# 027001A
SOURCE
A
B
LOCAL OFF
TIMER RST
MUTE 1
MUTE 2
TB
PHANTOM
INSERT
5
10
15
00
2 0
3 0
4O
50
0
2600 / Apr 2002