15
CHAPTER 3: POWERING UP-4XP LOUDSPEAKERS

CONNECTING UP-4XP LOUDSPEAKERS TO

THE MPS-488HP EXTERNAL POWER SUPPLY

UP-4XP loudspeakers require a Meyer Sound 48 V DC
external power supply, such 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 either
Phoenix 5-pin male connectors or SwitchCraft EN3 5-pin
female connectors, can deliver DC power to up to eight
UP-4XP loudspeakers. Cable lengths up to 150 feet for DC
power are possible when using 18-AWG wire, with just 1 dB
of loss in peak SPL. Longer cable runs are possible for mod-
erate applications that don't drive the loudspeakers to maxi-
mum output, or for installations with heavier wire gauges.
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 UP-4XPs.
TIP: For complete information on using the
MPS-488HP external power supply, refer to the
MPS-488HP Operating Instructions.
To connect UP-4XP 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 UP-4XP loudspeakers to the MPS-488HP
Channel Outputs. Use composite cables (such as
Belden 1502 or equivalent) wired for both DC power and
balanced audio and outfitted with the appropriate con-
nectors.
■When connecting UP-4XP loudspeakers equipped with
Phoenix connectors to the MPS-488HPp power supply,
use Phoenix 5-pin male to Phoenix 5-pin female cables.
TIP: You can use two separate cables for
UP-4XP 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 UP-4XP Loudspeakers” on page 13).
MPS-488HPp with Eight UP-4XP Loudspeakers
MPS-488HPp