Connectors And Cables; Rear Panel Features - Ashly MX-406 Operating Manual

Operating Manual -MX-406 Stereo Microphone/Line Mixer
5. CONNECTORS AND CABLES
The MX-406 mixer is fitted with five types of audio
connectors: 3-pin XLR type male (mono output), 3-pin XLR
type female (mic inputs), 1/4" tip-ring-sleeve (TRS) phone
jack, 3 .5mm jack (stereo line in), and RCA jack . Certain 1/4"
jack connections may use an unbalanced mono plug, which
is also shown .
Two-conductor (twisted pair) shielded cable is
best for all XLR type connections . Belden No . 8412 or its
6
equivalent is an excellent cable due to its heavy construction .
This type of cable should be used for all portable applica-
tions . Snake cables containing multiple shielded pairs must
be handled very carefully because the leads tend to be fragile,
and a broken conductor is difficult to repair .
If low level and high level lines are run parallel for
long distances, crosstalk may occur . In fact, the crosstalk (sig-
nal leakage between cables) can cause an electronic feedback
loop, oscillation, and possibly damage to the equipment . To
minimize crosstalk, physically separate low level (microphone)
cables from speaker cables by the greatest feasible distance .
At any point where cables meet, run low level cables perpen-
dicular to high level or speaker cables . If low and high level
or speaker cables must be run parallel and in close proximity
to one another, they should be bundled separately . In a perma-
nent installation, avoid running speaker cables and mic cable
through the same conduit pipe .
6. REAR PANEL FEATURES
6.1 Microphone Input
The MX-406 microphone input is an active balanced
type with a nominal impedance of 1200 ohms . Its noise per-
formance is best with a 200 ohm microphone . The Mic input
connector is a standard 3-pin XLR female with the shield on
pin 1, the (+) in-phase connection on pin 2, and the (-) out-of-
phase connection on pin 3 .