User Manual
10
TD-001536-01-A
Cooling
The KS Series Subwoofers are powered loudspeakers containing an internal power amplifier that produces heat. Allow a
minimum of 50cm (20in) clearance around the cabinet for convection cooling. Keep anything that might restrict airflow
away from the rear of the enclosure (i.e draperies, walls, etc.)
CAUTION!: Do not install enclosures with their rear panels exposed to direct sunlight. Direct sunlight will
heat the amplifier module and reduce its ability to produce full output. Install sunshades if needed. Maximum
ambient temperature for full performance to specification is 50° C (122° F). Do not install enclosures where
exposed to rain or other water sources. The enclosure is not weatherproof. Outdoor installations must provide
protection from the elements.
AC Mains
Refer to Figure 8
AC Mains Disconnection
Push in on the bottom of the power switch to turn the amplifier off. Unplug the AC cable
from the power source. To remove the AC mains cord from the amplifier, grasp the IEC
connector’s plastic body, press the yellow latch release button and pull. Do not pull the
plug out using the cord.
Powering up Your KS Series Subwoofers
Connect the AC power cord to the IEC socket on the back of the amplifier. Make sure the
plug is fully inserted into the IEC socket on the power amplifier module.
NOTE: Make sure that the AC power switch is in the OFF position before connecting AC power cord to the
AC source.
Connect the AC Power cord to the facility’s AC outlet.
The V-LOCK power cord has a special latching feature to prevent the power cord from being unintentionally removed.
The IEC plug and socket are both blue in color so the power cord can be identified as a KS Series subwoofer cord. If the
QSC-supplied cord is lost or damaged, a standard 18-gauge IEC power cord may be used. However, the latching system
works only with a V-LOCK power cord. Available from QSC.
The KS212C subwoofers are equipped with a universal power supply that can use input AC power voltages ranging from
100–240VAC at 50 – 60 Hz.
WARNING!: Use only the power cable that is correct for your location.
Power Switch
Push in on the top of the rocker switch to apply AC mains power to the amplifier. When power is applied to the amplifier,
the blue POWER indicator LED illuminates.
Rear LED POWER Indicator
The blue LED POWER indicator on the rear panel will illuminate when the AC Power is applied. The rear LED POWER
indicator will extinguish when the AC Power has been removed.
If the rear LED POWER indicator does not illuminate within the first 3 minutes after power is applied, verify the AC mains
line cord is properly attached to the subwoofer and plugged into the AC outlet. Verify the outlet is functioning properly.
NOTE: If the AC mains cord is usable and the AC mains outlet is operating properly, but the unit fails to
operate, the subwoofer may require servicing. Contact QSC’s Technical Services department.
— Figure 8 —