Additional Features - QSC KLA series User Manual

Additional Features

Front LED Switch
The blue power LED, on the front of the loudspeakers, may be set to any of three modes
by the FRONT LED switch (Figure 33)
PWR – This is the factory setting which means the LED illuminates when the POWER
switch is in the ON position and the unit is not in STANDBY.
OFF – The front LED does not illuminate in the OFF position. This setting is recommended
in applications where the light from the front LED may be visually objectionable.
LIMIT – The front LED tracks the LIMIT LED on the amplifier panel. When the KLA Series
is limiting (one or more of the limiters is engaging to protect some part of the system)
the front LED glows brighter in response to the limiting function. This allows you to be
aware of the limiter status without needing to see the rear of the unit. For more information refer to the
in limiting and when the unit is not in STANDBY, the front LED is dimly illuminated.
REMOTE GAIN Control
AARNRNG!: Do not put more than +5V or less than ground on the
occur. Do not connect the
A 3 pin Euro-style connector (Figure 34)
put the system into standby.
By varying the voltage on the
linearly controlled. The voltage on the
source. Many KLA Series systems can be controlled from a single potentiometer or external source by connecting the
KLA Series loudspeakers together.
Set the Attenuation controls of the loudspeakers at their desired levels. When you adjust the remote control, the system attenuation level is changed,
not the relative level of the individual loudspeakers.
ROTE!: The potentiometer can be from 1k ohms up to 50k ohms total resistance, with a linear taper.
A relay or manual connection can be made between the
located on the amplifier panel.
pin directly to the +5V pin.
is provided to remotely adjust the volume of the KLA Series loudspeaker or
pin between +5V (provided on +5V pin) and ground (
pin can be created by using a potentiometer or provided from an external
pin and the
"Red LIMIT LED" on page
pin or else damage may
pin), the volume can be
to put the KLA Series system into standby mode after 5 minutes.
21
— Figure 36 —
19. When not
— Figure 37 —
pins and pins of multiple