Intelligent Ac Power Supply - Meyer Sound 750-LFC Series Operating Instructions Manual

750-LFC OPERATING INSTRUCTIONS
You can use the following table as a guide to select cable
gauges and circuit breaker ratings for the system's
operating voltage.
750-LFC Current Draw
Current Draw
Idle
Maximum Long-Term
Continuous
Burst
Maximum Instantaneous
Peak
The minimum electrical service amperage required by a
loudspeaker system is the sum of the maximum long-term
continuous current for all loudspeakers. An additional
30 percent above the minimum amperage is recommended
to prevent peak voltage drops at the service entry.
NOTE: For best performance, the AC cable
voltage drop should not exceed 10 V
(10 percent at 115 V and 5 percent at 230 V).
Make sure that even with AC voltage drops, the voltage
always remains within the loudspeaker's operating
range.

INTELLIGENT AC POWER SUPPLY

The 750-LFC loudspeaker's Intelligent AC power supply
automatically:
Selects the correct operating voltage, allowing for
•
international use without manually setting voltage
switches
Eliminates high inrush currents with soft-start power up
•
Suppresses high-voltage transients up to several kilovolts
•
Filters common mode and differential mode radio
•
frequencies (EMI)
Sustains operation temporarily during low-voltage periods
•
Powering on the 750-LFC Loudspeaker
When powering on the 750-LFC loudspeaker, the following
startup events take place over several seconds.
1. Audio output is muted.
2. Voltage is detected and the power supply mode is auto-
matically adjusted as necessary.
3. The power supply ramps up.
16
115 V AC 230 V AC
0.39 A rms 0.38 A rms 0.42 A rms
5.3 A rms 2.7 A rms
9.2 A rms 4.4 A rms 10.7 A rms
15.3 A peak 7.8 A peak 18.0 A peak
4. On the user panel, the On/Status LED flashes multiple
colors successively.
5. The On/Status LED turns solid green, indicating the
loudspeaker is ready to output audio.
100 V AC
CAUTION:
!
solid green, or the 750-LFC loudspeaker does
not output audio after 10 seconds, remove AC
6.2 A rms
power immediately and verify that the voltage is within
the required range. If the problem persists, contact
Meyer Sound Technical Support.
If the On/Status LED does not turn