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CHAPTER 3: POWERING HMS LOUDSPEAKERS
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To power dual-channel HMS-15 loudspeakers, connect
each loudspeaker to a channel output pair (1–2, 3–4,
5–6, or 7–8) with two separate composite cables. The
MPS-488HP can power up to four dual-channel HMS-15
loudspeakers.
MPS-488HP
MPS-488HP with Four HMS-15 Loudspeakers
CAUTION:
When powering HMS-15 loudspeak-
ers, you must use two separate composite
cables connected to an MPS-488HP channel output
pair (1–2, 3–4, 5–6, or 7–8). Do not use a single cable
to deliver power to the HMS-15's two Input connec-
tors. Never, in any manner, combine the signals from
two MPS-488HP channel outputs, either at the power
supply (source) or the loudspeaker (destination).
CAUTION:
Make sure loudspeaker cables are
wired correctly. For details on assembling loud-
speaker cables, refer to Appendix B, "Assembling
Loudspeaker Cables."
TIP:
You can use separate cables for HMS loud-
speaker connections: a 2-conductor cable for
DC power and a 3-conductor cable for balanced
audio, both attached to a single Phoenix connector on
14
each cable end. This allows you to use a larger gauge
for the DC cable so you can achieve longer cable runs
(see "Long Cable Runs with Separate Cable for DC
Power and Audio" on page 11).
5. Power on the MPS-488HP and monitor the LEDs on the
front panel to verify connections. For information on the
MPS-488HP LEDs, refer to the MPS-488HP Operating
Instructions (PN 05.205.005.01).
6. Monitor the HMS loudspeaker LEDs to verify they are
receiving power.
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For single-channel HMS loudspeakers (HMS-5, HMS-10,
and HMS-12), make sure the On/Status LED turns solid
green after powering on the loudspeakers.
For dual-channel HMS-15 loudspeakers, make sure the
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two Input LEDs and On/Status LED turn solid green after
powering on the loudspeakers.
7. Enable output from the audio sources (from the mixer or
processor) connected to the MPS-488HP.
CONFIGURING THE MPS-488HP IN COMPASS
RMS
IntelligentDC loudspeakers can connect to RMS networks via
the MPS-488HP external supply (when equipped with the
factory-installed RMS option). Up to eight single-channel
HMS loudspeakers (HMS-5, HMS-10, and HMS-12) or up to
four dual-channel HMS-15 loudspeakers can be connected
to the MPS-488HP with their voltage and DC current moni-
tored in Compass RMS™.
NOTE:
In order for the MPS-488HP to report the
correct voltage and current draw for the
HMS-15 to RMS, the HMS-15 must be connected to
an odd-even output pair (1–2, 3–4, 5–6, or 7–8) using
two separate composite cables.
To configure the MPS-488HP in Compass RMS:
1. Make sure the MPS-488HP power supply is powered on
and connected to the RMS network.
2. In Compass, click the RMServer > Network tab.
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