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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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IMPORTANT SAFETY PRECAUTIONS AND EXPLANATION OF SYMBOLS WARNING! CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE AMPLIFIER COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsu- lated “dangerous” voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of shock to humans. The exclam
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Warranty (USA only; other countries, see your dealer or distributor) 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 – provided the unit is returned to our factory or one of our authorized serv
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7 Features K8 4 1. ABS enclosure 6 1 2. Steel grille 3. Front power LED 4. Cast aluminum handles 7 7 2 5. Power module 6. M10 installation points 5 7. M5 yoke attachment points 3 6 9 8. Tilt-Direct™ dual angle pole socket 7 9 8 9. Slip-resistant feet 7 4 K10 1 6 1. ABS enclosure 2. Steel grille 3. Front power LED 7 4 4 7 2 4. Cast aluminum handles 5. Power module 5 6. M10 installation points 7. M5 yoke attachment points 3 6 9 9 8. Tilt-Direct™ dual angle pole socket 9. Slip-resistant feet 8 7 4
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7 4 K12 1. ABS enclosure 1 6 2. Steel grille 3. Front power LED 7 4 4 4. Cast aluminum handles 7 2 9 5. Power module 5 6. M10 installation points 7. M5 yoke attachment points 3 6 9 9 8. Tilt-Direct™ dual angle pole socket 8 9. Slip-resistant feet 7 7 6 KSub 1 4 1. Birch plywood enclosure 2. Front power LED 3. Acoustic port 7 3 4. Cast aluminum handles 5. Power module 5 6. M20 threaded pole receptacle 2 7. 3" heavy duty casters 4 8. Slip-resistant feet 8 7 5
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Applications The K Series has been primarily designed for portable audio reinforce- ment. This includes a variety of uses in reinforcement for entertainers and presenters. The K8, K10 and K12 are all designed to perform well on their own in full-range audio. They can be used singly, in stereo pairs or in distributed or delayed systems. They perform extraordinarily well as both main reinforcement systems and as floor monitors (K10 and K12 only). (Figure 1) The K8, K10, and K12 are all equip
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Installation Before placing, installing, rigging, or suspending any speaker product, inspect all hardware, suspension, cabinets, transducers, brack- ets and associated equipment for damage. Any missing, corroded, deformed, or non-load rated component could significantly reduce the strength of the installation or placement. Any such condition severely reduces the safety of the installation and should be immediately cor- rected. Use only hardware which is rated for the loading conditions of the i
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Integrated Suspension Points (suspended installations) The K8, K10 and K12 enclosures each feature three load-rated M10 installation points. As shipped from the factory, each pick point has a rubber plug installed to retain the sleek look of the enclosure. These installation points are designed for use with the eyebolts included in the available accessory kit, model number K SERIES M10 KIT. The installation points may also be used with any forged shoulder eyebolt with an M10 thread, provided t
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AC Mains Connect AC power to the IEC socket on the back of the amplifier by locating the IEC connector-end of the AC power cord and inserting it fully into the IEC inlet on the power amplifier module. NOTE: Turn off the AC power switch before connecting AC power. 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 K Series loudspeaker cord. If
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Input Connections K8, K10, K12 Channel A MIC/Line Input Combination XLR-M and 1/4" Phone Jack Channel B Line Input Combination XLR-M Channel A MIC Level and 1/4" Phone Jack Yellow LED Indicator Channel A MIC/Line Channel B Line Input Level Switch Phono (RCA) Jacks Channel A Green Channel B Green Signal Present LED Signal Present LED Channel B Gain Channel A Gain The K8, K10 and K12 are designed to accept MIC Level and Line Level inputs with several different connectors. There are thre
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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. 1 = Shield (ground) 3 = Minus (-) Ground 2 = Plus (+) Non-inverting Input Input Connections KSub Channel B Line Input Combination XLR-M and 1/4" Phone Jack Channel A Line Input Comb
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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. The level of the output signal is not affected by the gain setting for that channel. Additionally, signal delivered on the RCA (phono) jacks is not pres
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DSP Features The K Series features advanced DSP (digital signal processing) circuitry that performs many functions. Some functions are set at the design/production level and are not user accessible. These functions include crossovers, time alignment, limiting and protection, thermal management and a number of proprietary features. QSC has designed exclusive DSP functions that greatly enhance the capabilities and performance of the K Series systems. Proprietary DSP Functions Excursion Limiting:
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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. Most importantly, speakers reproducing the same signal or signals that are adjacent in frequency must have the same polarity to get the maximum
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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 between +5V (provided on 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. Many K Series systems can be controlled from a single poten- tiometer by connecting
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Applications Input Hookup Output Hookup 16
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Output Hookup OR 17
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Common Standalone Small System (Mono) Common Stereo System LEFT RIGHT 18
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Dimensions K8 K10 Top Top 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 K12 KSub Top Top 14" 14" 356 mm 356 mm 14" 28.1" 356 mm 714 mm 23.7" 603 mm 26" 665 mm Front Side Front Side 19
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Specifications K8 K10 K12 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 – 18 kHz 60 Hz – 18 kHz 52 Hz – 18 kHz 48 Hz – 134 Hz Frequency Range (-10 dB) 61 Hz – 20 kHz 56 Hz – 20 kHz 48 Hz
