Making Audio Connections; System Power - QSC KLA series User Manual

Balanced Inputs: Connect to the plug as shown.
— Figure 30 —
Output
Both the KLA12 and KLA181 have discrete, direct LINE OUT male XLR connectors
LINE OUT is exactly equivalent to the signal on the LINE IN.
The level of the signal on the LINE OUT XLR is not affected by the ATTEN setting for that loudspeaker.

Making Audio Connections

Refer to Figure 26 and Figure 29.
The loop-thru cables supplied in the package are designed for use in a single array.
1. Connect the audio source (male XLR plug) to the LINE IN female XLR connector
2. If you are using the audio loop-thru connections, connect the female end of an XLR Audio Loop-thru
Cable (supplied) to the LINE OUT connector
chain.
3. Connect the male end of the XLR Audio Loop-thru Cable to the LINE IN
loudspeaker amplifier in the loop-thru chain.
4. Continue this process until all the audio connections for the loudspeakers in the array are made.

System Power

For safety reasons, it is important to follow the proper power connection and disconnection sequence as addressed in this section.
Proper power on/off sequencing can help to prevent unexpected sounds from being produced by the system (pops, clicks, thumps). These sounds are
unpleasant and can take away from the overall professionalism of the presentation. Always follow the rule that loudspeakers are "last on, first off".
ROTE!: The KLA12 employs a universal power supply, capable of operating the system with input AC power voltages ranging from
100 – 240 VAC at 50 – 60 Hz. Use only the power cable that is correct for your location.
Connect Loop-thru Power Cables
The KLA Series features a loop-thru power connector system. Using four powerCON® Loop-thru cables, and one
AC powerCON® Power Cord, you can power up to a maximum of five KLA loudspeakers on a single 15 amp/120 V
(8 amp/240 V) electrical circuit. The loop-thru connectors are color coded (blue = AC IN / grey = AC OUT) and keyed
differently to make sure the connections are correct.
AARNRNG!: The amplifier POWER switches do not remove AC mains power from the loop-thru
cables. If the AC mains is connected to one KLA12, electrical power is present on all connected
loop-thru cables.
Refer to Figure 30.
1. Make sure that all AC POWER switches
2. Make sure that the AC mains power cord is not connected. AC mains is the last power connection in the sequence.
1 = shield (ground)
3 = minus (-)
2 = plus (+)
(Figure 26, 4) on the first amplifier in the loop-thru
(1)
are off.
17
Unbalanced Inputs: Connect to the plug as shown.
— Figure 31 —
(Figure 26, 4), wired in parallel with the LINE IN. The signal on the
(1) on the amplifier.
( Figure 26, 1) of the next
1 = shield (ground)
3 = jumper to pin 1
2 = plus (+)
LINE IN
LINE OUT
— Figure 32 —
4 (Blue)
3 (Grey)
1
— Figure 33 —