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CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP
The MPS-488HP power supply delivers DC power and bal-
anced audio to Meyer Sound loudspeakers that require a
48 V DC external power supply. The MPS-488HP is a multi-
channel, switched-mode, regulated power supply that occu-
pies one space in a standard 19-inch rack. The MPS-488HP
can power up to eight MM-10XP subwoofers.
NOTE: The MPS-488HP power supply is avail-
able in two models: the MPS-488HPp, which is
equipped with Phoenix 5-pin male output connec-
tors, and the MPS-488HPe, which is equipped with
EN3 5-pin female output connectors.
THE MPS-488HP FRONT PANEL
The MPS-488HP front panel includes a power switch and
LEDs for monitoring each loudspeaker channel.
AC Power
The MPS-488HP 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 channel output has voltage and whether the
connected loudspeakers are receiving DC power and audio.
Voltage LEDs (1–8)
The blue Voltage LEDs indicate whether voltage is present
for each channel output. These LEDs should be lit when the
MPS-488HP is powered on. The MPS-488HP’s intelligent
circuit protection shields connected loudspeakers from
surges and shorts. The blue Voltage LEDs flash on and off
when a surge or short is encountered. If a channel’s Voltage
LED flashes on and off, you should power down the
MPS-488HP and inspect the cabling for that channel.
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 glows
brighter. If an LED is not lit, check that the channel’s Voltage
LED is lit and verify the cable connection to the loudspeaker.
MPS-488HPp with Eight MM-10XPs
MPS-488HPp Power Supply Front Panel
MPS-488HP Channel LEDs