Ashly MX-406 Manual de instruções - Página 6

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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

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 .