Block Diagram - QSC K8.2 User Manual

System Power Sequencing
Proper power turn on/turn off sequencing can help to prevent unexpected sounds from being produced by the system
(pops, clicks, thumps). Always follow the rule that speakers are "last on, first off".
Power On Sequence: Bring the output level control of the mixer (or other audio source) feeding your speakers to its
minimum position. Turn on all source devices (CD players, mixers, instruments), turn on subwoofer, then turn on the "top-
boxes" ( K8.2, K10.2 and K12.2). The level controls on your mixer may now be brought up.
Power Off Sequence: Turn off "top boxes," turn off subwoofer, then turn off all source devices.
If a K.2 Series speaker is being driven from the output of another K.2 Series unit, it should be turned on after the unit
feeding it signal, and turned off before the unit feeding it signal.

Block Diagram

Input A
Mic/Line In
EN
Mic/Line Thr u
Input B
HI-Z/Line In
Hi-Z/Line Thr u
Input C
Stereo In
Mix Out
TD-000523-00-01-C
Signal
Line
Mic
Pre
Mic
Mic
Signal
Line
Hi-Z
Hi-Z
Hi-Z
Signal
Sum
Sum
— Figure 11 —
10 (DRAFT 2017/05/02)
Mic / Line
Gain
Limit
Preset
Delay
Contours
Line / Hi-Z
Gain
Mono In
Gain
HF HF
Amp Amp
DSP
LF
Amp