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 au-
dio 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 unbal-
anced mono plug, which is also shown.
3.5mm Stereo Phone Plug
used for Stereo Line In
Tip (L), Ring (R)
Tip (+)
Ring (-)
Sleeve (Gnd)
Tip (+)
Sleeve (Gnd)
XLR pins are
numbered
on the
connector
insert.
2 = (+)
3 = (-)
1 = (gnd)
Audio Connector Types
6
(Gnd)
(+)
RCA Plug
Stereo Phone Plug
used for balanced
Mono Phone Plug
used for unbalanced
XLR Male
XLR Female
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 construc-
tion. This type of cable should be used for all portable
applications. 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 (signal leakage between cables) can cause an
electronic feedback loop, oscillation, and possibly dam-
age 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 perpendicular to
high level or speaker cables. If low and high level or
speaker cables must be run parallel and in close proxim-
ity to one another, they should be bundled separately. In
a permanent 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 bal-
anced type with a nominal impedance of 1200 ohms. Its
noise performance 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.