KS Series ® User Manual KS212C – 3600 watt Active Cardioid Subwoofer KS112 – 2000 watt Active Subwoofer KS112 KS212C TD-001536-01-A *TD-001536-01*
EXPLANATION OF SYMBOLS The term “WARNING!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death. The term “CAUTION!” indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in damage to the equipment that may not be covered under the warranty. The term “IMPORTANT!” indicates instructions or information that are vital to the successful completion of the procedure.
15. Adhere to all applicable, local codes. 16. To prevent electrical shock, the power cord shall be connected to a mains socket outlet with a protective earthing connection. 17. Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installation. 18. Do not use any aerosol spray, cleaner, disinfectant or fumigant on, near or into the apparatus. Clean only with a dry cloth. 19. Do not unplug the unit by pulling on the cord, use the plug. 20.
RoHS Statements These products are in compliance with European Directive 2011/65/EU – Restriction of Hazardous Substances (RoHS). These products are in compliance with “China RoHS” directives per GB/T26572.
KS212C / KS112 Features 1 Top 1 2 Bottom Horizontal Top 7 7 3 4 8 9 5 6 Front Horizontal Bottom Rear 3 11 10 — Figure 1 — 1. Rubber-feet stacking-alignment cups 7. Cast aluminum handles 2. Four low-noise, heavy-duty casters 8. M20 threaded socket for 35 mm speaker pole 3. Amplifier protection rails – protects the amplifier when the unit is rolled off, for example, a curb. 9. 18 mm birch plywood for KS212C 15 mm birch plywood for KS112 4. M20 threaded socket for 35 mm speaker pole 10.
About the KS212C Cardioid Subwoofer The term Cardioid refers to the heart-shaped coverage pattern of an audio device. A cardioid microphone is designed to be most sensitive at the front (on-axis), and least sensitive at the rear (180 degrees off-axis). A Cardioid Subwoofer operates exactly the same way, and is loudest at the front and quietest at the rear.
KS212C Applications and Installation WARNING!: Before placing, installing or mounting any speaker product, inspect all hardware, cabinets, transducers, brackets 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 corrected.
KS112 Applications and Installation Stacking the KS112 You can stack KS112 subwoofers in a horizontal orientation by matching the four rubber feet on the bottom of the top unit to the four cups on the top of the bottom unit. Refer to Figure 5. WARNING!: The KS112 Subwoofer is not designed to be suspended. Do not suspend the KS112 Subwoofer. Before placing, installing or mounting any speaker product, inspect all hardware, cabinets, transducers, brackets and associated equipment for damage.
Pole-mounting Loudspeakers Over the KS212C and KS112 NOTE: The KS212C is shown in Figure 6 and Figure 7. The features described in these two figures are the same for the KS112. Refer to the Stability Requirements charts below for individual requirements. The KS Series Subwoofers are equipped with two 35 mm M20 pole sockets, one on the top, and one on the side for pole-mounting a loudspeaker over the unit. Figure 6 shows a KS Series Subwoofer in a vertical orientation with a K.
Cooling The KS Series Subwoofers are powered loudspeakers containing an internal power amplifier that produces heat. Allow a minimum of 50 cm (20 in) 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.
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: 1. Bring the output level control of the mixer (or other audio source) feeding your loudspeaker speaker loudspeaker system to its minimum position. 2. Turn on all source devices (CD players, mixers, instruments). 3. Turn on the KS Series subwoofers, 4.
Inputs and Outputs 1 2 The KS Series Subwoofer amplifier has two separate female combination XLR / 1/4” Phone Jack inputs, and two corresponding pre‑gain pass-through male XLR outputs. PUSH PUSH Refer to Figure 10 1. SIG LED – When illuminated (green), it indicates a signal is present for Input A and/or B. If this LED is not illuminated, the input signal is missing or too low to detect. 3 2. IN A/B – Combination XLR – 1/4” Phone Jack connector. Balanced XLR and 1/4” input.
KS Series Subwoofer’s Menu The KS Series Subwoofers feature a multi-function digital display for control and selection of various subwoofer functions including scenes, crossover, and delay. Display Introduction 1 1. Home Screen – Displays the equipment model and the main functionality headings. Light background with black text indicates the item is selected. 2. Exit, or go back button – press to return to the previous screen or menu level. 3.
Menu Listing CROSSOVER Select the CROSSOVER setting 80 Hz – applies a 80 Hz low-pass filter. 80 Hz is optimized for the K.2 Series and future loudspeakers 100 Hz – applies a 100 Hz low-pass filter. 100 Hz is optimized for the legacy K, KLA, and KW loudspeakers CROSSOVERS 80 Hz 100 Hz CROSSOVERS Both of the crossover frequencies are time-aligned with the K.2 Series when the K.2 loudspeaker is pole-mounted over the KS Series and the front edges of the KS Series and K.2 Series loudspeakers are parallel.
Depth 24.25 in 616 mm Height 24.5 in 622 mm KS112 Dimensions PUSH Width 15.3 in 389 mm Height 24.5 in 622 mm Height 24.5 in 622 mm Depth 24.25 in 616 mm PUSH Width 15.3 in 389 mm Width 15.
Height 24.5 in 622 mm Depth 33.5 in 851 mm KS212C Dimensions Width 15.5 in 394 mm Height 24.5 in 622 mm Height 24.5 in 622 mm Depth 33.5 in 851 mm Width 15.5 in 394 mm Width 15.
Specifications KS212C KS112 Configuration Dual 6th-Order Bandpass Cardioid Subwoofer 6th-Order Bandpass Subwoofer LF Transducer 2 x 12-inch (305 mm), Cone 12-inch (305 mm), Cone Frequency Response (-6 dB) 44 - 104 Hz 41 - 108 Hz Frequency Range (-10 dB) 39 - 118 Hz 38 - 121 Hz Nominal Coverage Angle 180˚ Cardioid (15 dB rear rejection @ 70 Hz) N/A Maximum SPL 132 dB @ 1 m (peak) 128 dB @ 1 m (peak) Amplifier Class D 2 x 1800 W (peak) Class D 2000 W (peak) Cooling Low-noise, Variable
Mailing Address: QSC Technical Services QSC, LLC 1675 MacArthur Blvd. 1675 MacArthur Boulevard Costa Mesa, CA 92626 U.S. Costa Mesa, CA 92626-1468 U.S. Tel: 800.772.2834 (U.S. only) Main Number: +1.714.754.6175 Tel: +1.714.957.7150 World Wide Web: www.qsc.com FAX: +1.714.754.6173 Sales & Marketing: service@qsc.com Voice: +1.714.957.7100 or toll free (U.S. only) 800.854.4079 FAX: +1.714.754.6174 E-mail: info@qsc.
