QSC QA-K10 Speakers

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Summary

The QSC K Series is quite simply The New Standard in lightweight powered loudspeaker systems. Under the direction of Pat Quilter, QSC’s team of amplifier engineers have created a new standard in Class D power modules unparalleled in the industry. Next, breaking from the traditional loudspeaker paradigm, all full-range models (K8, K10, K12) are fitted with the identical 1.75″ HF device for unparalleled performance, regardless of speaker size. Extensive DSP processing is employed throughout, providing levels of sonic clarity and total output that defy the system’s size and weight. Premium-grade materials, advanced construction processes and multiple mounting and suspension options allow for a wide range of live and installed applications.

Inputs, Outputs, Mixing and EQ

Combo XLR and 1/4″ TRS inputs accept both Mic and Line Level input while a set of RCA phono inputs (except KSub) allow additional connectivity to portable MP3 players, CD players and line-level mixers. Up to three audio sources can be mixed internally and summed to a balanced output for “daisy-chaining” of multiple units. Separate direct outputs are also provided on each channel for additional output flexibility.

On-board switches provide preset EQ settings. The HF setting (full-range models) can be set to VOCAL BOOST for additional presence in the critical mid-frequency area or FLAT for accurate reproduction of the incoming signal. The LF switch can be set to NORM, DEEP™ for additional bass extension, or EXT SUB (full range models) for use with an external subwoofer. The rear panel LED switch can be set to POWER, illuminating the front-mounted LED when the unit is powered on, OFF for applications where it is not desirable to illuminate the front LED, or LIMIT which indicates to the system operator that the clip limiter circuit has been engaged during operation.

Extensive DSP

DMT™ (Directivity Matched Transition) provides for matched LF and HF coverage across the entire listening area, eliminating unnatural “dead” or “hot” frequency zones.

Intrinsic Correction™, first featured in our high-end line-array products maps 65-75 spatially-averaged measurements to IIR and FIR filters that actively adjust time, frequency and amplitude response to a maximally flat band pass target. The result is a speaker that behaves equally well across the entire sound field.

DEEP™ and excursion limiting allow for extended low-frequency response by actively managing low-frequency transients without degradation of the underlying signal or adjacent frequencies.

GuardRail™ protection, first introduced on our GX Series amplifiers protects both the amplifier module and your performance from unnatural and destructive clipping.

Light and Rugged

K Series full-range models are housed in rugged yet light ABS enclosures with a professional appearance that is at home in any application. ABS is a far more robust material than conventional speaker plastics and offers an additional measure of sonic clarity due to its internal rigidity. Ergonomic aluminum handles and a highly protective steel grille complete the package for ease of transport and long term durability.

Features

K10 features include:

  • 10” Woofer; 1.75” diaphragm compression driver
  • 90° Nominal coverage angle
  • Maximum SPL 129 dB peak
  • 1000-watt continuous Class D power modules in all models
  • Onboard mixer with two combo XLR and ¼” inputs, and stereo RCA inputs, (three audio input sources); two direct channel outputs and single summed balanced output
  • Extensive DSP enhances system performance
  • DMT™ (Directivity Matched Transition) provides for matched LF and HF coverage across the entire listening area, eliminating unnatural “dead” or “hot” frequency zones.
  • Intrinsic Correction™, first featured in our high-end line-array products maps 65–75 spatially-averaged measurements to IIR and FIR filters that actively adjust time, frequency and amplitude response to a maximally flat band pass target. The result is a speaker that behaves equally well across the entire sound field.
  • DEEP™ and excursion limiting allow for extended low-frequency response by actively managing low-frequency transients without degradation of the underlying signal or adjacent frequencies.
  • GuardRail™ protection protects both the amplifier module and your performance from unnatural and destructive clipping.
  • Attractive and professional appearance
  • Rugged ABS enclosures
  • Functions as a monitor wedge
  • 16-gauge powder coated steel grille
  • Comfortable ergonomic handles
  • 35 mm pole sockets with Tilt-Direct™
  • M10 rigging points
  • Eyebolt and yoke mount accessories available

Technical Specification

Technical Specification

Specifications K8 K10 K12

Configuration Trapezoidal 2-way Multipurpose 2-way Multipurpose 2-way

Transducers

Low-frequency

High-frequency

8″ cone transducer

1.75″ diaphragm compression driver

10″ cone transducer

1.75″ diaphragm compression driver

12″ cone transducer

1.75″ diaphragm compression driver

Frequency Response (-6 dB) 66 Hz to 18 kHz 60 Hz to 18 kHz 52 Hz to 18 kHz

Frequency Range (-10 dB) 61 Hz to 20 kHz 56 Hz to 20 kHz 48 Hz to 20 kHz

Nominal Coverage (-6 dB) 105° conical 90° conical 75° conical

Maximum SPL1 127 dB peak 129 dB peak 131 dB peak

Amplifiers

Power Output2 1000 W continuous Class D

(500 W LF, 500 W HF)

2000 W peak 1000 W continuous Class D

(500 W LF, 500 W HF)

2000 W peak 1000 W continuous Class D

(500 W LF, 500 W HF)

2000 W peak

Input Impedance XLR / ¼”: 40 kΩ balanced / 20 kΩ unbalanced

XLR / ¼” MIC mode: 2260Ω balanced

RCA: 10 kΩ

Controls Power, Gain A, Gain B, Mic/Line, LF Mode (Ext Sub/Norm/DEEP™), HF Mode (Flat/Vocal Boost), Front LED (On/Off/Limit)

Indicators Power, Signal A, Signal B, Standby, Limit, Mic

Connectors Balanced female XLR/¼” line/mic level input, Balanced female XLR/¼” line level input, Dual Balanced male XLR full range line level out , Balanced male XLR “mix” out, Stereo RCA line level input, Remote gain control, Locking IEC power connector

Cooling On demand, 50 mm variable speed fan

Amplifier Protection Thermal limiting, output overcurrent, overtemperature muting, GuardRail™

Transducer Protection Thermal limiting, excursion limiting

AC Power Input Universal power supply 100–240 VAC, 50 to 60 Hz

AC Power Consumption

(1/8 of full power) 100 VAC, 2.3 A

120 VAC, 2.01 A

230 VAC, 1.13 A

Enclosure

Material Impact resistant ABS

Finish Black paint

Grille Rugged powder-coated steel

Dimensions (HWD) 17.7″ × 11″ × 10.6″

450 mm × 280 mm × 269 mm 20.4″ × 12.6″ × 11.8″

519 mm × 320 mm × 300 mm 23.7″ × 14″ × 14″

603 mm × 356 mm × 356 mm

Weight (Net) 27 lb / 12.2 kg 32 lb / 14.5 kg 41 lb / 18.6 kg

Available Accessories K8 tote, K8 yoke, M10 Kit-C K10 tote, K10 yoke, M10 Kit-C K12 tote, K12 yoke, M10 Kit-C

K Series

Specifications KSub

Configuration 4th-order bandpass

Transducers

Low-frequency

2 × 12″ cone transducers

Frequency Response (-6 dB) 48 Hz to 134 Hz

Frequency Range (-10 dB) 44 Hz to 148 Hz

Maximum SPL1 130 dB peak

Amplifiers

Power Output2 1000 W continuous Class D (2 × 500 W)

2000 W peak

Input Impedance XLR / ¼”: 40 kΩ balanced / 20 kΩ unbalanced

Controls Power, Gain, LF Mode (Normal/DEEP™), Polarity (Normal/Reverse), Front LED (On/Off/Limit)

Indicators Power, Signal, Standby, Limit

Connectors Dual balanced female XLR/¼” line level input, Dual Balanced male XLR full range line level out, Remote gain control, Locking IEC power connector

Cooling On demand, 50 mm variable speed fan

Amplifier Protection Thermal limiting, output overcurrent, overtemperature muting, GuardRail™

Transducer Protection Thermal limiting, excursion limiting

AC Power Input Universal power supply 100–240 VAC, 50 to 60 Hz

AC Power Consumption

(1/8 of full power) 100 VAC, 2.3 A

120 VAC, 2.01 A

230 VAC, 1.13 A

Enclosure

Material Painted birch plywood

Finish Black textured paint

Dimensions (HWD) 26″ × 14″ × 28.1″ (including casters)

665 mm × 356 mm × 714 mm

Weight (Net) 74 lb / 33.6 kg

Available accessories KSub cover

1 For comparison purposes and in accordance with common industry practice, maximum peak SPL specifications are theoretical calculations based upon transducer sensitivity and peak available amplifier power.

2 Independent of limiters and driver protection circuits.

All specifications are subject to change without notice.

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