ATC SCM20ASL Owner's Handbook Manual page 13

P o w e r o n / o f f
This button powers the loudspeaker on or off. When
the switch is in the inward position the loudspeaker
is powered on. When the switch is in the outward
position the loudspeaker is powered off.
Due to the nature of the electronics in ATC active
loudspeakers it is quite normal for a sound to be heard from
the speaker when the power is applied or disconnected.
The noise heard will not damage the speaker and is quite
normal. Although ATC uses the highest-grade components,
a different noise may be heard from each speaker due
to slight tolerance variations in the amplifier components.
B a s s S h e l f
This control allows for a variable bass boost/cut from
-2dB to +3dB in 1dB steps. This subtracts/adds
more warmth and energy in the low frequency region.
When used to boost it is at the expense of:
Accurate transient reproduction
Reduced headroom
Increased distortion
Note: This adjustment should be used for fine tuning.
Please try to achieve the best possible in-room
bass response by first adjusting loudspeaker and listening
position and room acoustic treatment if possible.
If the SCM20ASL LE are partnered with one or more
C4 Sub Mk2 LE , ensure the control is set to 0dB.
22
I n p u t S e n s i t i v i t y
Switchable from 1V (+2dBu) to 2V (+8dBu) via the rear
panel switch. For an additional continuous -6dB
adjustment, the Input Sensitivity can also be adjusted by
accessing the Trim pot through the panel. For source
(driving) equipment with potentiometer based analogue
level control, choose an Input Sensitivity that results
in the desired average sound pressure level with the
source level control at approximately 50%. For source
(driving) equipment with a digital level control,
choose an Input Sensitivity that results in the desired
average sound pressure level with the level control
at approximately 80%.
F a u l t
Indicates a temporary or permanent amplifier fault.
The Fault LED will illuminate if there is a DC fault on the
amplifier or if the thermal limit of the heatsink is reached.
In the rare case that the Fault LED illuminates, the
loudspeaker should be switched off. Ensure the amplifier
heatsink has adequate ventilation and after 45 minutes
switch it back on. If the Fault LED remains illuminated
the amplifier is registering a fault which should be
investigated by an approved technician. Please contact
your ATC dealer or distributor, details can be found at
www.atc.audio. If the Fault LED is no longer illuminated,
the amplifier had shut down safely due to reaching
high temperatures. Please reduce the system listening
level or improve amplifier ventilation and continue
to use the loudspeaker.
SCM20ASL LE
13
9 16 "
250
13
9 16 "
250
WEIGHT – 27KGS/59.5LBS | DIMENSIONS – SEE DIAGRAM