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The Mastiff-KM312 is the largest self-powered monitor in the Mastiff line. Powering at a max of 4000 W, this aggressive speaker features three 12” woofers and produces a maximum SPL output at 136 dB (peak).

More information about the Mastiff line


Color Customizable

We have the ability to customize your project by color matching your system to any RAL code to help you to better integrate the speakers into a wide variety of venues.



Selectable Coverage

The directivity of many K-array solutions can be modified in order to optimize the coverage by an adjustable horn with variable orientation.


Spot/Flood Dragon
Onboard Touch Screen

An integrated touch screen provides intuitive control over the main DSP functions, from signal routing to level and delay settings.


Dante Compatible

With the dedicated K-dante accessory, this solution can be integrated into a Dante network making it interoperable with other devices.


Full-Range Frequency Response

With a very extended frequency range the loudspeaker covers the entire audible spectrum without the need for a subwoofer ideal for when there are space constraints.


Self-Powered Capabilities

Our self-powered solutions prevent distortion from cumbersome and fragile passive crossovers and power loss due to long running cables, and offer plenty of advantages ranging from the compactness of the solution to the ease of integration with new and existing sound systems.




  • Power Handling 2000 W + 800 W + 280 W
  • Max power 4000 W (1)
  • Impedance 8 + 8 Ohm
  • Frequency range (-10 dB) 62 Hz – 19 kHz (2)
  • SPL 1W/1mt LF:100 dB HF:105 dB (3)
  • Maximum SPL 132 dB (cont.) - 138 dB (peak) (4)


  • Horizontal 100°-30° (depending on horn orientation)
  • Vertical 30°-100° (depending on horn orientation)


  • Type DSP Controlled
  • Frequency 200 Hz - 1650 Hz


  • Low-mid frequency 2 x 12” neodymium magnet woofer with 2.5” voice coil
  • Mid frequency 12” neodymium magnet woofer with 3” voice coil
  • High frequency neodymium magnet compression driver with 2” voice coil

Audio input

  • Analog connectors 2 male + 2 female 3-pin balanced XLR
  • Digital Connectors 1 male + 1 female 3-pin XLR

Remote control input

  • Connectors 1 male + 1 female XLR parallel / 1 USB B Jack serial converter

Power input

  • Connectors 2 x PowerCon IN/OUT


  • Type 2 class D modules - DSP controlled
  • Power 4 x 1000W @ 8 Ohm
  • Protection Dynamic limiter, over current, over temp., short circuits

AC power

  • Nominal power requirements 100 – 240 Vac ±10% 50-60Hz
  • Operating range 85 – 265 Vac (auto-range)

Physical overview

  • Dimensions 82.0 x 53.0 x 33.5 (47.95” x 20.47” x 13.18”) (6)
  • Weight 37.5 Kg (82.67 lb)
  • Notes for data:

    1. Maximum RMS applicable power for a musical signal. The reference signal is the one proposed by EIAJ standard
    2. With dedicated preset
    3. Measured @4 mt then scaled @1 mt
    4. Measured with musical signal
    5. EIAJ Test Standard, 1KHz, 1%THD
    6. (W x H x D)

    New materials and design are introduced into existing products without previous notice. Present systems may differ in some respects from those presented in this catalog.

Customers Applications

Mastiff-KM312 can be successfully used in a range of different settings and events.

Discover all the projects where Mastiff-KM312 products have been used