Meyer STELLA-188, Operating Instructions Manual

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CHAPTER 2: CONNECTING STELLA LOUDSPEAKERS
10
STELLA-188 POWER SUPPLY
The Stella-188 was designed to deliver eight channels of
balanced audio and DC power to up to 16 Stella-4/Stella-4C
loudspeakers (or to up to eight Stella-8C loudspeakers). The
Stella-188 is a switched-mode, regulated power supply that
occupies one space in a standard 19-inch rack.
Stella-188 Front Panel
The Stella-188 front panel includes a power switch, LEDs for
monitoring each of the eight loudspeaker channels, and a
fuse for each channel.
AC Power
The Stella-188 is powered on and off with the AC Power
switch.
Voltage and Load Current LEDs (1–8)
The Voltage and Load Current LEDs are useful for verifying
whether each of the eight Channel Outputs have voltage
and whether their connected loudspeakers are receiving DC
power and audio.
Voltage LEDs (1–8)
The blue Voltage LEDs indicate whether voltage is present
for each of the eight loudspeaker channels. These LEDs
should be lit when the Stella-188 is powered on. If a channel
is not lit, its fuse may need to be replaced. If a group of four
Voltage LEDs is not lit (either 1–4 or 5–9), one of the
Stella-188's two internal power supplies may have failed.
Load Current LEDs (1–8)
The green Load Current LEDs indicate whether a loud-
speaker is connected to the channel and receiving power.
As a channel's audio signal increases, its LED becomes
brighter. If an LED is not lit, check that the channel's Voltage
LED is lit (the fuse is working) and verify the cable connec-
tion to the loudspeaker.
Fuse Slow Blow (1–8)
Each loudspeaker channel is protected by its own fuse. A
maximum of two Stella-4/Stella-4C loudspeakers (or one
Stella-8C loudspeaker) can be connected per channel; con-
necting more than that could cause the fuse to blow. When
replacing a fuse, make sure to use a 4-amp, 250-volt slow-
blow fuse (T4A-250V). These fuses are available from Meyer
Sound (PN 420.022).
Stella-188 Rear Panel
The Stella-188 rear panel includes an AC connector, an
Audio Input connector for receiving up to eight channels of
source audio, and eight Channel Output connectors that can
deliver DC power and balanced audio to up to 16 Stella-4/
Stella-4C loudspeakers (or to up to eight Stella-8C loud-
speakers).
AC Input
The Stella-188 has an international standard IEC-320 AC
inlet (line, neutral/line, earth). The inlet can accept different
power cord types for outlets used throughout the world.
Make sure to use the correct power cord for the AC power in
your area. The Stella-188 operates at an AC voltage range of
100–240 V at 50–60 Hz.
Stella-188 Power Supply Front Panel
Stella-188 Channel LEDs and Fuses
Stella-188 Power Supply Back Panel