Ac Power; Main Channels 1 And 2 - Meyer Sound LD-1A Operating Instructions Manual

AC Power

AC Inlet and Voltage Select Switch
The LD-1A uses an international standard IEC 320
Mains AC inlet. This convenient rear panel receptacle
accepts many power cord types for mains outlets used
throughout the world. The LD-1A must have the correct
power cord for the AC power in the area in which it will
be used.
The LD-1A operates in two AC voltage ranges: 90 – 125 V
and 180 – 250 V, at 50 or 60 Hz. The voltage select switch
on the rear panel must be set to the proper voltage before
applying AC power. Connecting the LD-1A to a 225 V
AC source with the voltage select switch in the 90 – 125
V position could blow the fuse. Unplug the power cord
before changing the voltage select switch!
CAUTION:
Set voltage before
applying power.
AC Voltage Ranges
~
180-250V
~
90-125V
CAUTION:
RISK OF FIRE REPLACE WITH
T250mA - 250V FUSE
~
90-125/180-250 V
50-60 Hz 25W MAX
The audio outputs are muted internally during normal
power on and off, and in case of sudden loss of AC power
or unstable line voltage. This precaution prevents noise
transmission, and possible damage, to interconnected
devices.
Donít use a ground-lifting adapter or cut the AC ground pin.
To avoid electrical shock and damage to the unit, use the
power cord specified by Meyer Sound or an equivalent
that satisfies the requirements of the local safety testing
agency. Do not operate the unit if the power cables are
frayed or broken.
AC Fuse
Always disconnect the power cord before changing the
fuse. To replace the fuse, insert a flat-blade screwdriver
in the fuse cap and gently turn counterclockwise; the
fuse springs from its socket. Replace only with a 5 x 20 mm,
T 250 mA, 250 V, time-lag fuse that conforms to identical
safety agency standards. If the fuse blows again, contact
Meyer Sound for repair information.
Voltage select
switch
IEC 320
male power inlet

Main Channels 1 and 2

Channels 1 and 2 are equipped to control a full-range
main system. Each channel has a Signal/Mute-Clip LED
indicator, mute switch, gain control, Mid-Hi, DS-2, and
Sub output controls, and a male XLR Loop connector.
CH 1
Signal Mute-Clip
Mute
DS-2
Master
0
-3
+3
-6
Mute
-9
DS-2
0
+6
-12
-3
-6
-9
-12
DS-2
Lo Cut
& Sub
Crossover
Array
Sub
EQ
Mute
Mute
Sub
Mid-Hi 0
0
-3
-3
+3
-6
-6
-9
-9
+6
-12
-12
The Master gain control sets the channel's overall level.
The Mute switch mutes the entire channel. The bicolored
Signal/Mute-Clip LED indicates input signal presence
and level with a variable intensity green color, and clipping
or mute with red. The Loop connector is used to send the
input signal to an auxiliary channel or to another device.
The Mid-Hi, DS-2 (mid-bass), and Sub outputs each have
a level control and mute switch. The level control modifies
the level set by the channel's Master gain control; the
mute switch affects the Mid-Hi, DS-2, or Sub output only.
For example, the Mid-Hi output could be muted without
affecting the Loop, Sub, or DS-2 outputs. Additional
functions specific to each output are described in the
following sections.
CH 2
Signal Mute-Clip
Mute
φ
Master
0
-3
+3
-6
-9
DS-2
+6
-12
-3
+3
-6
-9
+6
-12
Lo Cut
φ
Array
EQ
Mute
Sub
Mid-Hi
0
-3
+3 -3
+3
-6
-6
-9
-9
+6
+6
-12
-12
φ
DS-2
Mute
0
+3
+6
DS-2
& Sub
Crossover
φ
Sub
Mute
0
+3
+6
5