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The Mastiff line-KM312P is the largest passive 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.



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.


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: input/output levels, signal routing, offset delays for the subwoofer and Speakon output and overall system delay (up to 330 ms).




  • Power Handling 2000 W + 800 W + 280 W
  • Max power 4000 W
  • Impedance LF: 4 Ohm MF-HF: 8 + 8 Ohm
  • Frequency range (-10 dB) 62 Hz – 19 kHz
  • SPL 1W/1mt LF: 100dB MF: 97dB HF: 105dB
  • Maximum SPL 132dB (cont.) - 138dB (peak)


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


  • Type DSP Controlled and passive filter
  • Frequency 200 Hz - 1300 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

Power audio in/out

  • Connectors 2 x 4-pin speakon
  • Wiring 1+ 1- (Passive Crossover MF-HF) 2+ 2- (Woofer)

Physical overview

  • Dimensions 82.0 x 53.0 x 33.5 cm (47.95” x 20.47” x 8.26”) (1)
  • Weight 33.5 Kg (73.85 lb)
  • Notes for data:

    1. (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.