Meyer Sound MPS-488HP - Manual (Page 12)

CHAPTER 2: MPS-488HP FRONT AND REAR PANELS
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To avoid distortion when linking Channel Inputs, make sure
the source device can drive the total load impedance of the
linked loudspeakers. The source device must be capable of
delivering a minimum of 16 dBV (6.3 V rms into 600 ohms) to
yield the maximum peak SPL over the operating bandwidth
of the loudspeaker.
NOTE: Most source devices are capable of
driving loads no smaller than 10 times their
output impedance. To drive eight loudspeakers
linked from a single Channel Input, the source device
should have an output impedance of approximately
100 ohms or less.
Channel Outputs
The MPS-488HP’s eight Channel Outputs deliver DC power
(48 V DC) and balanced audio to up to eight loudspeakers.
The channel outputs are available as either Phoenix 5-pin
male connectors (on the MPS-488HPp model) or EN3 5-pin
male connectors (on the MPS-488HPe model).
NOTE: For information on cable requirements
for your loudspeaker, refer to its operating
instructions. For information on cables and cable
accessories available from Meyer Sound, see
Appendix A, “MPS-488HP Accessories.” For infor-
mation on cable assembly, see Appendix B, “Phoenix
and EN3 Cable Assembly.”
TIP: A single composite cable (such as Belden
1502 or equivalent) wired for both DC power
and balanced audio can be used to connect loud-
speakers to Channel Outputs.
CAUTION: When wiring cable connections for
MPS-488HP Channel Outputs, it is extremely
important that each pin in the connector be wired cor-
rectly. Make sure the 48 V DC from the MPS-488HP is
wired directly (and only) to the 48 V DC pins on the
loudspeaker connector, and that the polarity is
observed (negative to negative, positive to positive) to
avoid damage to the loudspeaker. In addition, make
sure that audio pins are wired correctly; polarity rever-
sals for audio signals affect system performance.
MPS-488HPp Channel Outputs
The MPS-488HPp Channel Outputs are Phoenix 5-pin male
connectors with three pins for balanced audio (positive, neg-
ative, and shield) and two pins for DC Power (positive and
negative). The pins are clearly labeled on the MPS-488HPp
rear panel.
Each MPS-488HPp comes with eight Phoenix 5-pin female
cable connectors for assembling loudspeaker cables.
MPS-488HPe Channel Outputs
The MPS-488HPe Channel Outputs are EN3 5-pin female
connectors with three pins for balanced audio (positive,
negative, and shield) and two pins for DC Power (positive
and negative). The pins are clearly labeled on the
MPS-488HPe rear panel.
Each MPS-488HPe comes with eight EN3 5-pin male cable
connectors for assembling loudspeaker cables.
MPS-488HPp Channel Outputs
MPS-488HPe Channel Outputs
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