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CHAPTER 4: POWERING LOUDSPEAKERS WITH THE MDM-832
NOTE:
For information on cable requirements
for your loudspeaker, refer to its operating
instructions. For information on cables available from
Meyer Sound, see Appendix A, "Composite Cable."
To connect loudspeakers to the MDM-832:
1. Switch both breakers on the MDM-832 front panel to the
OFF position.
2. Disconnect the MDM-832 from the AC mains wall recep-
tacle.
3. Connect audio sources (from a mixer or processor) to the
MDM-832 Audio Inputs with balanced XLR cables.
4. Use the MDM-832 Link switches to route audio inputs to
the desired audio outputs (see "Link Switches" on
page 13).
5. Connect the MDM-832 AC Outputs to loudspeaker AC
Inputs with powerCON 20 cables.
NOTE:
To provide AC power, balanced audio,
and RMS to loudspeakers using a single com-
posite cable, see Appendix A, "Composite Cable."
6. Connect the MDM-832 audio outputs to loudspeakers.
■
If the MDM-832 is outfitted with XLR 3-pin male outputs,
use balanced cables. Optionally, use RMS cables to con-
nect the MDM-832 front-panel RMS loudspeaker con-
nectors to loudspeaker RMS modules.
■
If the MDM-832 is outfitted with XLR 5-pin male outputs,
use composite cables wired for both balanced audio and
RMS and terminated with the XLR 5-pin connectors.
CAUTION:
Each set of four MDM-832 outputs
is capable of powering groups of loudspeakers
that have a sum total maximum long-term continuous
current draw equal to or below the rating of the corre-
sponding breaker. Load ratings are indicated adja-
cent to the breaker switches on the front panel. For
more information, see Appendix C, "MDM-832 Spec-
ifications".
7. Connect the MDM-832 to the AC mains wall receptacle.
8. If an RMS network is available, connect the MDM-832's
rear-panel RMS network connectors to the RMServer.
For more information, see "RMS Network" on page 17.
9. Switch both breakers on the MDM-832 front panel to the
ON position. Monitor the front-panel LEDs to verify that
voltage is present. For more information, see "Voltage
LEDs (1–2)" on page 11.
10. Check loudspeaker LEDs to verify whether the loud-
speakers are powered and ready to reproduce audio.
11. Enable output from the audio sources (from the mixer or
processor) connected to the MDM-832.
In addition to connecting each loudspeaker directly to the
MDM-832, a loop configuration can be established by using
the loop outputs of connected loudspeakers to provide AC
power, balanced audio, and RMS to additional loudspeak-
ers. For examples of this type of configuration, see "Cable
Configurations" on page 16.
NOTE:
Using the MDM-832 linked outputs or
loudspeaker loop outputs to drive additional
loudspeakers affects their input impedance. For more
information, see "Input Impedance for Linked Chan-
nel Inputs" on page 14.
CAUTION:
The powerCON 32 input connector
and powerCON 20 output connectors should
not be engaged or disengaged while under load or
live.
15
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