Specifications
6
Operating Manual -MX-406 Stereo Microphone/Line Mixer
5.CONNECTORSANDCABLES
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
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.REARPANELFEATURES
6.1MicrophoneInput
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.