QSC KS112 User Manual

15
TD-001536-01-B
System Power Sequencing
Proper power sequencing at turn on and turn off can help prevent audible thumps, clicks, and other noises in the system.
Always follow the rule that loudspeakers are last on and first off.
Turn-On Sequence:
1. Turn down the main faders (or other output level control) of the mixer (or other audio source) to minimum.
2. Turn on all the source devices and processors (CD players, mixers, instruments, etc.).
3. Turn on the KS Series subwoofers.
4. Turn on the top loudspeakers.
5. Bring up the faders or level controls on the mixer.
Turn-Off Sequence:
1. Turn off the top loudspeakers.
2. Turn off the KS Series subwoofers
3. Turn off all audio source devices and processors.
Block Diagram
Line Thru
Line In
Gain
Line Thru
Line In

Signal
Summing
Delay
Preset
Contours
DSP
LF
Amp
Limit
A
B
– Figure 17 –

QSC KS112 Specifications

General

Subwoofer type	Active subwoofer
Amplifier class	D
Subwoofer sensitivity	128 dB
Subwoofer driver diameter	305 mm
Subwoofer frequency range	38 - 121 Hz
Subwoofer driver diameter (imperial)	12 \
Product color	Black
LED indicators	Yes
Line inputs (RCA)	2
Certification	CE, WEEE, UL, China RoHS, RoHS II, FCC Class B
Sustainability certificates	RoHS
Package type	Box
Package weight	35000 g
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	50 - 60 Hz

Weight and Dimensions

Subwoofer depth	616 mm
Subwoofer width	394 mm
Subwoofer height	622 mm
Subwoofer weight	28400 g