K-Array KR400s High Tech Ultra-Light Powered Speaker System

K-Array KR400s High Tech Ultra-Light Powered Speaker System

K-Array KR400s High Tech Ultra-Light Powered Speaker System

B&H # KAKR400S MFR # KR400S
K-Array KR400s High Tech Ultra-Light Powered Speaker System

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Product Highlights

  • Sold as a Pair
  • 1500W Subwoofer + 720W Satellite
  • Incredible Performance-to-Size Ratio
  • KL21ma Powered Sub-Woofer
  • KR400s Ultra-Slim Line Array Speaker
  • Ultra Light Weight & Portable
  • Dedicated PC Control Software
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K-Array KR400S overview

  • 1Description

The K-Array KR400s High Tech Ultra-Light Powered Speaker System delivers the power and sound associated with much larger and heavier professional speakers systems. The system is fully powered and consists of the KL21ma powered subwoofer and KR400s ultra-slim satellite speaker. The light weight and small footprint is attributed to the neodymium drivers and lightweight electronics. The KR400s line-array speaker contains 24 x 3" neodymium transducers in a strong stainless steel chassis.

Its slim profile and minimal distance between the drivers result in clear intelligibility and excellent phase coherent coverage. The KL21ma powered sub-woofer is rated at 1500 watts (2500W Max), features a 21" long-excursion neodymium speaker and pole mount for the line-array speaker. Together the system delivers an impressive 3600 watts (max amplifier power) of clear, powerful audio for concerts, event audio, theater sound and other sound reinforcement applications.


Unique performance-to-size ratio
High power 132dB continuous, 138dB peak
Fitted with integral handles
Line array emission wavefront
Integrated mounting system
DSP on board with 16 dedicated presets
Remote PC control software (RS485)
Ultra fast set-up and dismantling system


Theatrical sound reinforcement
Concert halls, clubs, houses of worship
Portable and installed audio-visual systems
Cinema and special effects
In the Box
K-Array KR400s High Tech Ultra-Light Powered Speaker System
  • 2 x KR400 Satellite Speaker
  • 2 x KL21ma Subwoofer Speaker
  • 1 Year Warranty
  • Table of Contents
    • 1Description

    K-Array KR400S specs

    Maximum Power Handling Power handling 1500W(sub) + 2x 720W(sat) w(AES)
    Maximum amplifier power 2500W(sub) + 2x 1200W(sat) w(EIAJ)
    Impedance 4Ω(sub)+6Ω(sat)
    Frequency Response 30Hz - 19KHz +/- 3dB (preset relating)
    Max Input Sound Level (SPL) 132dB continuous - 138dB peak
    Crossover DSP controlled
    Frequency: 80Hz minimum (preset dependent)
    Drivers Low frequency: 21" Neodymium speakers with 3" voice coil
    High frequency: 2 x 12 x 3" Neodymium speakers with 1" voice coil
    Input Connections Connectors male + female parallel 3-pin balanced XLR
    Wiring Pin1 = ground - Pin2 = hot - Pin3 = cold
    Output Connections Connector 4-pin Female Speakon
    Wiring: Pin1+=CH1+ Pin1=CH1- Pin2+=Pointer + Pin2=Pointer
    Remote Input 2 x female 8 poles RJ45
    Power Input 2 x PowerCon IN/OUT
    Amplifiers Type: 1 modules class D - DSP controlled
    Subwoofer power: 1800 Watt
    Satellite power output: 1800 Watt
    Protection: Dynamic limiter, over current, over temp, short circuits
    AC Power Operating range: 85 - 270 Vac 50-60Hz (Autorange)
    P.nom: 900VAC
    Max Operating Range: 400VAC
    Min Operating Voltage: 70VAC
    Dimensions KL21ma: 21.85 x 21.85 x 30.59" (55.5 x 55.5 x 77.7cm)
    KR400: 3.56 x 39.57 x 4.53" (8.8 x 100.5 x 11.5cm)
    Weight KL21ma: 85.98 lbs (39kg)
    KR400: 19.84 lbs (9kg) x2
    Packaging Info
    Package Weight 321.0 lb
    Box Dimensions (LxWxH) 53.0 x 26.0 x 25.6"

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