Meyer Sound HMS-10TM - Manual (Page 11)

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CHAPTER 3: POWERING HMS-10 LOUDSPEAKERS
CONNECTING HMS-10 LOUDSPEAKERS TO
THE MPS-488HP EXTERNAL POWER SUPPLY
HMS-10 loudspeakers require a Meyer Sound 48 V DC
external power supply, such as the MPS-488HP. The single-
space 19-inch rack unit receives eight channels of balanced
audio from its XLR female Channel Inputs and routes the
audio, along with 48 V of DC power, to its eight Channel
Outputs. The Channel Outputs, which are available as
Phoenix 5-pin male connectors, deliver DC power to up to
eight HMS-10 loudspeakers at cable lengths up to 150 feet
with just 1 dB of loss in peak SPL using 18 AWG wire. The
use of composite multiconductor cables (such as Belden
1502 or equivalent) allows a single cable to carry both DC
power and balanced audio to the HMS-10. Longer cable
runs are possible for moderate applications that don't drive
the loudspeakers to maximum output, or for installations
using heavier wire gauges.
TIP: For complete information on using the
MPS-488HP external power supply, refer to the
MPS-488HP Operating Instructions.
To connect HMS-10 loudspeakers to the MPS-488HP:
1. Power off the MPS-488HP.
2. Connect audio sources (from a mixer or processor) to the
MPS-488HP Channel Inputs. Use balanced XLR cables.
3. Use the MPS-488HP Link switches to route Channel
Inputs to the desired Channel Outputs. For information
on the MPS-488HP Link switches, refer to the
MPS-488HP Operating Instructions.
4. Connect the HMS-10 loudspeakers to the MPS-488HP
Channel Outputs. Use a composite cable (such as
Belden 1502 or equivalent) outfitted with Phoenix con-
nectors and wired for both DC power and balanced
audio.
CAUTION: Make sure HMS-10 loudspeaker
cables are wired correctly. For details on
assembling loudspeaker cables, see Appendix B,
“HMS-10 Cable Assembly.”
TIP: You can use two separate cables for
HMS-10 loudspeaker connections: a 2-conduc-
tor cable for DC power and a 3-conductor cable for
balanced audio, both attached to a single Phoenix
connector on each cable end. This allows you to use
a larger gauge for the DC cable so you can achieve
longer cable runs (see “Cable Lengths and Cable
Gauges for HMS-10 Loudspeakers” on page 9).
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.
6. Enable output from the audio sources (from the mixer or
processor) connected to the MPS-488HP.
!
MPS-488HP with Eight HMS-10 Loudspeakers
MPS-488HP