Overview
Specifications
Downloads
Thunder-KSCARDIO412P

THUNDER KSCARDIO412P by KGEAR expands the Thunder family with a high-performance cardioid subwoofer designed for professional live sound and fixed installations. Equipped with four 12” neodymium woofers, it delivers massive low-frequency impact with a maximum SPL of 138 dB and power handling up to 2500 W. Its advanced cardioid design significantly reduces rear sound radiation, ensuring clean and controlled bass.

In Mono-Amp mode it achieves 12 dB of rear attenuation, while Bi-Amp mode increases rejection up to 20 dB. Stable in horizontal, vertical, or side-by-side configurations, it requires no complex processing. A robust birch plywood enclosure and flexible SpeakOn connectivity complete this powerful low-frequency solution.

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Specifications

General

  • Type:  

    Passive cardioid subwoofer

  • Transducers:  

    4x 12'' ferrite magnet woofer
    (3x front, 1x rear)

  • Frequency Response:  

    35 Hz - 150 Hz (-6 dB)

     (1)

  • Crossover:  

    Mono-Amp mode: internal crossover and filters enabled, managed by a dedicated preset.

    Bi-Amp mode: internal crossover/filters bypassed by switch; processing managed via external DSP (dedicated preset required), Low Pass @ 150 Hz. CH1 = Front / CH2 = Rear.

     (2)

  • Max SPL:  

    138 dB (peak)

     (3)

  • Coverage:  

    Cardioid pattern / rear attenuation 

    Mono-Amp mode: rear attenuation -12 dB (typ.).

    Bi-Amp mode: rear attenuation up to -20 dB (max.)

     (4)

  • Rated Power:  

    Mono-amp: 2500W
    Bi-amp: 2100W + 700W Bi amp (CH1 = Front / CH2 = Rear)

  • Connectors:  

    2xSpeakOn NL4 1+1-/ 2+2-
    (signal); 1+1-/ 2+2- (link)
     

  • Nominal Impedance:  

    Mono-Amp: 4 Ω

    Bi-Amp: 4 Ω + 16 Ω (CH1 = Front / CH2 = Rear)

Handling and Finishes

  • Dimensions (W x H x D):  

    370x 1104x 785 mm
    (13,38x 31,49x 8,46 in)

     (5)

  • Weight:  

    62,4 kg (137,58 lbs)

  • Material:  

    Polyurea coated birch plywood

  • Colors:  

    Black

Regulations

  • IP Rating:  

    IP54

  • (1) With dedicated preset.
  • (2) preset dependant
  • (3) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 8 m then scaled at 1 m.
  • (4) Mono-Amp mode: rear attenuation -12 dB (typ.). Bi-Amp mode: rear attenuation up to -20 dB (max.)
  • (5) Vibration-dumping feet 0,15mm (0,16in)

  • Passive loudspeakers requires dedicated preset loaded on board of K-array amplifiers.

  • New materials and design are introduced into existing products without previous notice.

Downloads

KSCARDIO412P DATASHEET

Preliminary V.0.1

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