CHAPTER 2: POWER REQUIREMENTS
12
The maximum number of loudspeakers that can be looped
from the Loop Output connector is determined by the volt-
age of the power source, the circuit breaker rating, and the
rating of the AC power cable connected to the first UPQ-1P.
Each UPQ-1P loudspeaker ships with one AC looping con-
nector for making AC looping cables. Assembled AC loop-
ing cables are available from Meyer Sound.
CAUTION: Do not exceed the current capabil-
ity of the 20-amp Input Connector for the
UPQ-1P. When looping loudspeakers, consider the
total current draw for all loudspeakers on the circuit,
including the first loudspeaker.
POWER CONNECTOR WIRING
The UPQ-1P loudspeaker requires a grounded outlet. To
operate safely and effectively, it is extremely important that
the entire system be properly grounded.
When wiring international or special-purpose power con-
nectors:
Connect the blue wire to the black terminal, or the termi-
nal marked with an N.
Connect the brown wire to the red terminal, or the termi-
nal marked with an L.
Connect the yellow and green wire to the green (or green
and yellow) terminal, or the terminal marked with an E.
CAUTION: When creating AC power cables
and distribution systems, it is important to pre-
serve AC line polarity and connect the earth ground
on both ends of the cable. The UPQ-1P loudspeaker
requires a grounded connection. Always use a
grounded outlet and plug. It is extremely important
that the system be properly grounded in order to
operate safely and properly. Do not ground-lift the AC
cable.
UPQ-1P VOLTAGE REQUIREMENTS
The UPQ-1P loudspeaker operates safely and continuously
when the AC voltage stays within 90–264 V AC at 50 or
60 Hz. The UPQ-1P allows any combination of voltage to
GND (neutral-line-ground or line-line-ground).
If the voltage drops below 90 V (brownout), the UPQ-1P
loudspeaker uses stored power to continue operating tem-
porarily; the loudspeaker will shut down if the voltage does
not rise above the low boundary before the stored power is
used.
If the voltage rises above 264 V, the power supply can be
damaged.
CAUTION: The power source for the UPQ-1P
loudspeaker should always operate within the
required voltage range, at least a few volts from the
upper and lower ranges. This will ensure that AC volt-
age variations from the service entry — or peak volt-
age drops due to cable runs — will not cause the
loudspeaker’s amplifiers to cycle on and off or cause
damage to the power supply.
Powering Up the UPQ-1P
When AC power is applied to the UPQ-1P loudspeaker, its
Intelligent AC™ power supply automatically selects the cor-
rect operating voltage, allowing the loudspeaker to be used
internationally without manually setting voltage switches. In
addition, Intelligent AC also suppresses high-voltage tran-
sients up to several kilovolts, filters common mode and dif-
ferential mode radio frequencies (EMI), and sustains
operation temporarily during low-voltage periods.
When powering up the UPQ-1P 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. The green On/Temp LED on the user panel lights up,
indicating the loudspeaker is ready to output audio.
Number of UPQs that Can Be Looped with AC Power
Circuit Breaker/
Connector Rating
115 V AC 230 V AC 100 V AC
15 amps 2 looped
(3 total)
6 looped
(7 total)
2 looped
(3 total)
20 amps 4 looped
(5 total)
8 looped
(9 total)
3 looped
(4 total)
AC Cable Color Code
To Next Page
Loading...
Need help?
General
