QSC K8 User Manual
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QSC K8 User Manual

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K Series

User Manual

K8 – 105° 1000 W active 8" (200 mm) 2-way loudspeaker system
K10 – 90° 1000 W active 10" (250 mm) 2-way loudspeaker system
K12 – 75° 1000 W active 12" (300 mm) 2-way loudspeaker system
KSub – Dual 12" (300 mm) 1000 W active 4th-order bandpass subwoofer system
TD-000280-00-A1
*TD-000280-00-A*

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Summary of Contents for QSC K8

  • Page 1: User Manual

    K Series User Manual K8 – 105° 1000 W active 8" (200 mm) 2-way loudspeaker system K10 – 90° 1000 W active 10" (250 mm) 2-way loudspeaker system K12 – 75° 1000 W active 12" (300 mm) 2-way loudspeaker system KSub –...

  • Page 2: Important Safety Precautions And Explanation Of Symbols

    Use only attachments/accessories specified by QSC Audio Products, LLC. Use only with hardware, brackets, and components sold with the apparatus or by QSC Audio Products, LLC. Unplug the apparatus during lightning storms or when unused for long periods of time.

  • Page 3: Fcc Statement

    QSC Audio Products 3 Year Limited Warranty QSC Audio Products, LLC (“QSC”) guarantees its products to be free from defective material and/or workmanship for a period of three (3) years from the date of sale and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installa- tion and use –...
  • Page 4 Features ABS enclosure Steel grille Front power LED Cast aluminum handles Power module M10 installation points M5 yoke attachment points Tilt-Direct™ dual angle pole socket Slip-resistant feet ABS enclosure Steel grille Front power LED Cast aluminum handles Power module M10 installation points M5 yoke attachment points Tilt-Direct™...
  • Page 5 ABS enclosure Steel grille Front power LED Cast aluminum handles Power module M10 installation points M5 yoke attachment points Tilt-Direct™ dual angle pole socket Slip-resistant feet KSub Birch plywood enclosure Front power LED Acoustic port Cast aluminum handles Power module M20 threaded pole receptacle 3"...
  • Page 6 (Figure 3) For extra low-frequency extension and enhancement, the KSub is per- fectly matched to the rest of the K Series. The K8, K10 and K12 all have a selectable high-pass filter for use with the subwoofer. The KSub includes a fixed low-pass filter so it will accept full-range input.

  • Page 7: Installation

    Recommended Deployment The K8 was designed to sit on the floor, stage, subwoofer enclosure, be suspended, or be pole mounted on a 35 mm diameter loudspeaker sup- port pole. When pole-mounted to the KSub, pole length must not exceed 31 inch (787 mm).
  • Page 8 Ensure all pick-point fasteners are installed and correctly tightened in order to maintain enclosure’s rated strength. Use either QSC’s M10 forged shoulder eye bolts contained in K SERIES M10 KIT or an M10 forged shoulder eyebolt with a thread length no more than 0.8 inch (20 mm).

  • Page 9: Power Switch

    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, K10, K12). The level controls on your mixer may now be brought up.
  • Page 10 Channel A Gain The K8, K10 and K12 are designed to accept MIC Level and Line Level inputs with several different connectors. There are three input connection points on the input panel. Channel A will accept MIC or Line Level inputs by connecting a male XLR cable or a male 1/4"...

  • Page 11: Unbalanced Inputs

    Balanced Inputs: Connect to the plug as shown. 1 = Shield (ground) 3 = Minus (-) Ground 2 = Plus (+) Inverting Input Non-inverting Input Unbalanced Inputs: Connect to the plug as shown. If a 3 conductor (TRS) plug is used to connect an unbalanced source, Pin 3 and pin 1 must be connected with a jumper as shown.

  • Page 12: Output Connections

    Output Connections K8, K10, K12 Channel A Line Level Direct Output Channel B Line Level Direct Output Channel A Channel B Gain Knob Gain Knob Post-Gain Line Output Both Channel A and Channel B have discreet direct outputs on female XLR connectors. The signal on this output is exactly equivalent to the signal from the corresponding input.

  • Page 13: Dsp Features

    High-frequency EQ On the K8, K10 and K12 there are two high-frequency settings. From the factory, the switch is set to “FLAT.” This means that the loudspeaker system is producing a flat response through the vocal band. This is the standard set- (Figure 9) ting for most applications.

  • Page 14: Subwoofer Polarity

    Subwoofer Polarity Polarity (sometimes improperly referred to as phase) refers to the voltage of an input signal and whether it is a positive or negative voltage at any given time. In most cases a positive voltage causes a woofer cone to move forward with respect to the cabinet orientation, and a negative voltage then moves the woofer cone backward.
  • Page 15 Remote Gain Attenuator A 3 pin “Euro” connector has been provided to adjust the volume of the K Series loudspeaker or put the system into standby. (Figure 13) By varying the voltage on the pin) and ground ( pin), the volume can be linearly controlled. The voltage on the pin can be created by using a potentiometer or provided from an external source.
  • Page 16 Applications Input Hookup Output Hookup...
  • Page 17 Output Hookup...
  • Page 18 Common Standalone Small System (Mono) Common Stereo System LEFT RIGHT...
  • Page 19 Dimensions 11" 12.6" 10.6" 11.8" 280 mm 320 mm 269 mm 300 mm 17.7" 20.4" 450 mm 519 mm Front Side Front Side KSub 14" 14" 356 mm 356 mm 14" 28.1" 356 mm 714 mm 23.7" 603 mm 26" 665 mm Front Side...

  • Page 20: Specifications

    Specifications KSub Configuration Trapezoidal 2-way Multipurpose 2-way Multipurpose 2-way 4th Order Bandpass Transducers Low-frequency 8" cone transducer 10" cone transducer 12" cone transducer 2 x 12" cone transducers High-frequency 1.75" diaphragm compression driver 1.75" diaphragm compression driver 1.75" diaphragm compression driver Frequency Response (-6 dB) 66 Hz –...

  • Page 21: Mailing Address

    © 2009 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries. Tilt-Direct, Intrinsic Correction, DEEP and GuardRail are all trademarks of QSC Audio Products, LLC. All other trademarks are the property of their respective owners. Patents may apply or be pending.

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