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VHD Subwoofer Enclosure

The VHD4.18 is a quad 18" subwoofer system comprising of four individual loudspeaker cabinets. The objective is to make the system easy to transport and set up. When assembled, the VHD4.18 system becomes a high-efficiency neodymium subwoofer system with immense output. The system was designed with very high sensitivity in mind; it provides 110 dB at 1W/1m and a tremendous output of 149dB when running at full power. Each cabinet incorporates a large port area that becomes an optimized horn aperture when all four cabinets are stacked together. The quad 18" subwoofer system delivers an extreme output and controlled low-frequency resolution.


  • Professional, Baltic birch construction with a highly resistant polymer coating

  • Very High Definition low, frequency reproduction

  • 146dB sustained output / 149dB peak (using 4 units of VHD4.18)

  • Large chamber horn reflex acoustic design

  • Single 18" low-frequency driver with 4" (100 mm) inside/outside, epoxy-baked high-temperature voice coil assembly, and neodymium magnetic structure.

  • Proprietary side handles (6) for simplified handling and carrying

  • High impact low friction feet, allowing lock-in to other VHD cabinets and easy cabinet movement

  • Front locking aluminum VHD wheel boards with wraparound hardwood bumpers

  • Weatherproofing option and special paint finishes available on request


Specifically designed to accompany the VHD2.0 and VHD1.0 as a true full range high output system for live performance and music

  • Hire and Production

  • Concert venues

  • Large Theatres

  • Scalable into multiple large systems

  • Fixed installation

System Acoustic Performance

Max SPL Long-term: 146dB (4 x VHD4.18)

Max SPL Peak: 149dB (4 x VHD4.18)

-3dB Response: 36Hz to 100Hz

-10dB Response: 31Hz to 100Hz

Impedance: 8Ω

Crossover Point: 70Hz to 130Hz

Low-Frequency Section

Acoustic Design: Horn reflex loaded

Low-Frequency Amplifier Requirement: 800W /1 x VHD4.18 (VHD3200 amp.)

Woofer Size / Voice Coil Diameter / Design: 18" / 4" / Inside Outside

Magnet Type: Neodymium

Diaphragm Material: Epoxy Reinforced Cellulose

Speaker Input

Speaker Input: AP4 male

Speaker Output

Speaker Output: AP4 female


Cabinet Material: Baltic birch

Handles: 6

Color: Black (wear-resistant polymer coating)

Physical Dimensions

Height: 600 mm (23.62")

Width: 700 mm (27.55")

Depth: 750 mm (29.52")

Weight: 52 kg (114.4lbs)

Product code

  • KVV 987 079 - VHD4.18

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