15" 3-Way 1000 Watt Powered Loudspeaker


QSC KW Series Powered Loudspeakers

Building on the success of the K Series, the KW153 represents the next evolutionary step in wood enclosure loudspeakers. QSC system engineers have created the KW153 to feature all the groundbreaking electronic attributes of the popular K Series while at the same time designing a product that is both smaller and significantly lighter than previous wood enclosure models.

High Output
Like the K Series models, the KW153 model features a QSC designed, 1000 Watt (2x 500) Class D power module. And continuing in the K Series tradition, every model is fitted with the identical high-output 1.75" HF device (full-range models) and woofers of the same high quality design, regardless of speaker size.

Defined Coverage Area
Directivity Matched Transition (DMT™) provides for matched LF and HF coverage across the entire listening area of the KW153, eliminating unnatural "dead" or "hot" frequency zones.

Extensive signal processing is employed throughout, providing levels of sonic clarity and total output that defy all expectations for a product in this category:

  • Intrinsic Correction™, first featured in QSC's 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 amaximally flat bandpass 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 QSC's GX Series amplifiers protects both the amplifier module and your performance from unnatural and destructive clipping.

The KW153 features a four-position mic / line gain switch that allows for connection of a wide variety of devices. Combo XLR and 1/4" TRS inputs accept both mic and line level input while a set of RCA phono inputs 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.

Remote Gain
Remote gain control capability is offered via a potentiometer (not included) connected to the on-board Phoenix-Style connector. In an installed application, multiple KW Series speakers can be "daisy-chained" for total gain control from a single remote pot. Auto-standby mode is engaged after 5 minutes of inactivity.

Premium-Grade Materials
The KW153 is designed to withstand the rigors of professional use. Advanced construction processes, premium-grade Baltic birch cabinetry, ergonomic, cast aluminum handles and a highly protective steel grille provide for ease of transport and long term durability. Integrated M10 suspension points allow for flown applications with a KW M10 Kit (sold separately).

QSC KW153 Features:

  • 15” woofer; 6.5” midrange woofer; 1.75” diaphragm compression driver
  • 75° Nominal coverage angle
  • Maximum SPL: 134 dB peak
  • 1000-watt Class D power modules in all models (2 × 500 W continuous)
  • 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 featuring DEEP™ and Intrinsic Correction™ enhances system performance
  • DMT™ (Directivity Matched Transition) ensures uniform coverage across the entire sound field
  • Rugged, texture-painted birch enclosures
  • Four-position Mic/Line gain
  • Tour-grade 16 gauge steel grilles
  • Comfortable ergonomic handles
  • 35 mm standard (non-tilt) pole socket
  • M10 rigging points for suspended installation

QSC KW153 Specifications:

  • Configuration: 15" 3-way trapezoidal
  • Transducers:
    • Low-frequency: 15" cone transducer
    • Mid-frequency: 6.5" mid-range cone transducer
    • High-frequency: 1.75" diaphragm compression driver
  • Frequency Response (-6 dB): 35 Hz - 18 kHz
  • Frequency Response (-10 dB): 33 Hz - 20 kHz
  • Nominal Coverage (-6 dB): 75° axisymmetric
  • Maximum SPL*: 134 dB Peak
    • *Note:  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.
  • Amplifier Specifications:
    • RMS Power Output**: 1000 Watts Class D (500 W LF, 500 W MF/HF) continuous
      • **Note:  Independent of limiters and driver protection circuits.
    • Peak Power Output: 2000 Watts Peak
    • Input Impedance:
      • Channel A XLR/1/4":
        • 0 dB: 38 kOhms balanced / 19 kOhms unbalanced
        • +12 dB: 10 kOhms balanced / 5 kOhms unbalanced
        • +24 dB: 2.66 kOhms balanced / 1.33 kOhms unbalanced
        • +36 dB: 660 Ohms balanced / 330 Ohms unbalanced
      • Channel B XLR/1/4": 38 kOhms balanced / 19 kOhms unbalanced
      • Channel B RCA: 10 kOhms
    • Controls:
      • Power
      • Gain A
      • Gain B
      • Channel A Input Gain (0dB/12dB/24dB/36dB)
      • 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 (24dB and 36dB settings)
    • Connectors:
      • Two (2) Balanced Female XLR / 1/4" Line/Mic Level Inputs
      • Two (2) Balanced Male XLR full-range line level outputs
      • Balanced Male XLR "Mix" Output
      • Stereo RCA Line Level Input
      • Remote gain control
      • Locking IEC Power Connector
    • Cooling: On demand, 50mm variable speed fan
    • Amplifier Protection: Thermal limiting, output overcurrent, over temperature 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 power):
      • 100 VAC, 2.3 A
      • 120 VAC, 2.01 A
      • 230 VAC, 1.13 A
  • Enclosure:
    • Material: 15mm painted birch plywood
    • Finish: Black textured paint
    • Grille: Black powder coated 16 gauge steel
    • Dimensions (HxWxD): 43.1" x 18.5" x 16.8" (1094 x 470 x 427mm)
    • Weight: 87 lbs (39.5 kg)
    • Available Accessories: KW153 cover, KW M10 kit (sold separately)
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