Chapter 2: Power Requirements; The Ac Connectors; Power Connector Wiring - Meyer Sound UPJunior UltraCompact VariO Operating Instructions Manual

CHAPTER 2: POWER REQUIREMENTS

Self-powered and compact, the UPJunior loudspeaker com-
bines advanced loudspeaker technology with equally
advanced power capabilities. Understanding power distri-
bution, voltage and current requirements, as well as electri-
cal safety issues, is critical to the safe operation of the
UPJunior.

THE AC CONNECTORS

The user panel on the back of the UPJunior includes the fol-
lowing AC connectors:
UPJunior AC Input (left) and AC Loop Output (right) Connectors
The AC Input Connector (Blue)
The blue AC Input connector supplies power to the UPJun-
ior. The connector is rated at 20 amps and uses a
PowerCon3 AC mains locking connector that prevents acci-
dental disconnections. A 10-foot AC power cable, rated at
15 amps, is included with each UPJunior. If you replace the
included AC power cable, make sure to use a cable with the
appropriate power plug (on the other end) for the area in
which you will operate the UPJunior.
The AC Input connector also supplies power to any addi-
tional loudspeakers connected to the UPJunior's gray Loop
Output connector. Each UPJunior requires approximately
3 A rms maximum at 115 V AC for proper operation.
CAUTION: When using the included AC power
!
cable, do not loop more than four additional
UPJuniors from the AC Loop Output connector at
115 V (five total for the circuit), and not more than
eight at 230 V (nine total for the circuit).
The AC Loop Output Connector (Gray)
The gray AC Loop Output connector allows multiple UPJun-
iors to be looped and powered from a single power source.
Connect the AC Loop Output of the first UPJunior to the AC
Input of the second UPJunior, and so forth. The AC Loop
Output uses a PowerCon3 AC mains locking connector that
prevents accidental disconnections.
The maximum number of UPJuniors 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 UPJun-
ior.
Number of UPJuniors that Can Be Looped with AC Power
Circuit Breaker/ 115 V AC
Connector Rating
15 amps 4 looped
(5 total)
20 amps 6 looped
(7 total)
Each UPJunior 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 UPJunior's 20-amp Input Connector.
When looping loudspeakers, consider the total cur-
rent draw for all loudspeakers on the circuit, including
the first loudspeaker.

POWER CONNECTOR WIRING

The UPJunior requires a grounded outlet. To operate safely
and effectively, it is extremely important that the entire sys-
tem be properly grounded.
AC Cable Color Code
230 V AC 100 V AC
8 looped 4 looped
(9 total) (5 total)
11 looped 6 looped
(12 total) (7 total)
9