Meyer Sound Stella - 4 Constellation, Operating Instructions Manual

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CHAPTER 2: CONNECTING THE STELLA-4
THE STELLA-4 CONNECTOR
The Stella-4 receives DC power and balanced audio from
the five-pin Phoenix connector on its back panel. The con-
nector’s five pins include two for DC power (negative and
positive) and three for balanced audio (shield, negative, and
positive). These pins are clearly labeled on the Stella-4 back
panel. The connector accepts conductors up to 12 AWG
(American Wire Gauge) or 2.5 mm
2 . To function properly, the
Stella-4 requires DC power in the range of 12–18 V DC.
A single composite cable (such as the Belden 1502R) wired
for both DC power and balanced audio can be used to con-
nect the Stella-4 to one of the Stella-188’s eight Channel
Outputs.
Each Stella-4 loudspeaker comes with one Phoenix cable
connector for making Stella-4 loudspeaker cables. For infor-
mation on Stella-4 cable requirements, see “Cable Lengths
and Cable Gauges for Stella-4s” on page 13.
CAUTION: When wiring Stella-4 cable connec-
tions, make sure each pin in the connector is
wired correctly to avoid damage to the loudspeaker
and polarity reversal, which can affect system perfor-
mance.
TIP: When connecting two Stella-4s to a single
Stella-188 Channel Output, you can daisy-chain
the cable of the first Stella-4 to the second Stella-4.
To do so, wire the cable connector plugged into the
first Stella-4 with both the cable connected to the
Stella-188 and the cable connected to the second
Stella-4.
Loudspeaker Wiring with Belden 1502R Cable
When wiring Stella-4 loudspeaker cables with Belden 1502R
cable, make sure to use the conventions in Table 1. The red
and black wires in the Belden 1502R cable have a thicker
gauge than the other three wires and should be used for DC
power. The blue, white, and shield wires are shielded
together and should be used for audio.
Both ends of the Stella-4 loudspeaker should be wired so
that the pins in the Stella-4 connector align with those in the
Stella-188 Channel Output connectors (see “Channel Out-
puts (1–8)” on page 12).
THE 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 loud-
speakers. The Stella-188 is a switched-mode regulated
power supply that occupies one space in a standard 19-inch
rack.
The Stella-188 Front Panel
The Stella-188 front panel includes a power switch and
LEDs for monitoring each of the eight loudspeaker channels,
as well as a fuse for each channel.
Stella-4 Connector
!
Belden 1502R Composite Cable
Table 1: Wiring for Stella-4 Loudspeaker Cables with Belden 1502R
Wire Gauge Gauge
Red DC power, positive (+) 18 AWG
Black DC power, negative (–) 18 AWG
Blue Balanced audio, positive (+) 22 AWG
White Balanced audio, negative (–) 22 AWG
Shield Balanced audio, shield 24 AWG
Stella-188 Power Supply Front Panel
Red: DC power (+)
Black: DC power (–)
White: audio (+)
Blue: audio (–)
Audio shield