KIA 218S dual 18-inch high-power subwoofer

KIA 218S

The Alpha Acoustics® KIA 218S is a high-power dual 18″ passive subwoofer designed to complement the KIA 410. Delivering 3000 W RMS (12000 W peak) and deep bass extension down to 35 Hz, it’s built for concerts, festivals, and large venues. Deploy three or more cabinets for cardioid mode to tame unwanted rear low-frequency spill and tighten overall coverage.

  • High SPL with deep extension to 35 Hz
  • Dual 18″ high-output LF drivers
  • 3000 W RMS / 12000 W peak handling
  • Cardioid-capable with 3+ units
  • Touring-ready birch plywood cabinet

Specialties of Speaker

  • Transducer

    2 × 18″ LF

  • Power (RMS)

    3000 W (12000 W Peak)

  • Maximum SPL

    Up to 143 dB

KIA 218S detail image
  • Design

    Passive ported

  • Frequency Response

    35 Hz – 200 Hz

  • Finish

    Black, Custom RAL colors

Specifications

Electroacoustic

  • Transducer2 × 18″ LF
  • Frequency Response35 Hz – 200 Hz
  • Sensitivity102 dB
  • Maximum SPL143 dB
  • Power (RMS/Peak)3000 W / 12000 W
  • Impedance4 Ω
  • Connectors2 × NL4 SpeakON

Design

  • TypePassive subwoofer (ported)
  • EnclosureMulti-layer birch plywood
  • ProtectionBall-proof reinforced grille
  • FinishBlack, Custom RAL colors

Physical

  • Dimensions (W×D×H)1195 × 745 × 550 mm
  • Weight80 kg

Downloads

Documents

Suggested Amplifiers

DAMP 2.2800HD

DAMP 2.2800HD

2 × 2800 W touring amplifier with DSP

  • In-built DSP & FIR
  • 4Ω, 8Ω
  • Class-D with PFC
  • 96 kHz / 24-bit AD/DA
  • +18 dBu max input level
  • 19", 1U design
VIEW DETAILS

Feel the Impact with KIA 218S

Pair it with KIA 410 for a full-range system that moves crowds. Stack it, fly multiple units in cardioid, and unleash clean, controlled low end for the biggest stages.

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Alpha Acoustics Speaker