Pin input jack wiring – Lectrosonics UM450 User Manual
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UM450
5-Pin Input Jack Wiring
The wiring diagrams included in this section represent
the basic wiring necessary for the most common types
of microphones and other audio inputs. Some micro
phones may require extra jumpers or a slight variation
on the diagrams shown.
It is virtually impossible to keep completely up to date
on changes that other manufacturers make to their
products, thus you may encounter a microphone that
differs from these instructions. If this occurs please call
our toll-free number listed under Service and Repair in
this manual or visit our w
sonics.com
Audio Input Jack
The Audio Input Jack for the UM450 is wired as shown
below:
PIN 1 Shield (ground) for positive biased electret lava
liere microphones. Shield (ground) for dynamic
microphones and line level inputs.
PIN 2 Bias voltage source for positive biased electret
lavaliere microphones.
PIN 3 Low impedance microphone level input for
dynamic microphones. Also accepts hand-held
electret microphones provided the microphone
has its own built-in battery.
PIN 4 Bias voltage selector for Pin 3. Pin 3 voltage (0, 2
or 4 volts) depends on Pin 4 connection.
Pin 4 tied to Pin 1: 0 V
Pin 4 Open:
Pin 4 to Pin 2:
2 V
4 V
PIN 5 High impedance, line level input for tape decks,
mixer outputs, musical instruments, etc.
LECTROSONICS, INC.
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