750-LFC OPERATING INSTRUCTIONS
16
You can use the following table as a guide to select cable
gauges and circuit breaker ratings for the system’s
operating voltage.
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.
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.
CAUTION: If the On/Status LED does not turn
solid green, or the 750-LFC loudspeaker does
not output audio after 10 seconds, remove AC
power immediately and verify that the voltage is within
the required range. If the problem persists, contact
Meyer Sound Technical Support.
750-LFC Current Draw
Current Draw115 V AC230 V AC100 V AC
Idle0.39 A rms0.38 A rms0.42 A rms
Maximum Long-Term
Continuous
5.3 A rms2.7 A rms6.2 A rms
Burst9.2 A rms4.4 A rms10.7 A rms
Maximum Instantaneous
Peak
15.3 A peak7.8 A peak18.0 A peak
To Next Page
Loading...
Need help?
General
