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High Output Active-Driven Subwoofer

The ES1.8 is a high-output, reflex horn-loaded, single 18" subwoofer designed as a part of the ES Series sound reinforcement system. It provides tight, up-front, low-frequency extension with authority, attack, and definition. Designed to be used in pairs or with up to two ES1.5, the ES1.8 can achieve high output levels consistently and safely. Alongside the ES1.0 and EPAK2500/R, ES1.8 offers a very firm foundation on which to build a powerful ES system.


  • Professional Baltic birch construction with a highly resistant polymer coating

  • 131dB sustained output, 134dB peak per unit, and 136dB/ 139dB peak when using 2 units

  • Horn reflex-loaded, 18" low-frequency driver with 4" (100 mm) inside/outside, epoxy baked, high-temperature voice coil assembly and carbon fiber reinforced cone assembly

  • Four proprietary side handles for simplified handling and carrying

  • Heavy-duty front grille to work with the innovative ES series magnetic carts

  • High-impact, low-friction feet are asymmetrically located on two sides allowing vertical or horizontal system set up, lock-in, and easy cabinet movement

  • Six industrial-grade internal corner braces with twelve M10 suspension points

  • M20 top hat for pole insertion

  • Weather proofing option and special paint finishes available on request


Specifically designed to be used in pairs to accompany the ES1.0 as a true full-range high output system for music playback and live performance

  • Large Bars and Nightclubs

  • Concert venues

  • Portable PA

  • Scalable into larger systems

System Acoustic Performance

Max SPL Long-term: 131dB (136dB - 2x ES1.8)

Max SPL Peak: 134dB (139dB - 2x ES1.8)

-3dB Response: 37Hz to 130Hz

-10dB Response: 33Hz to 130Hz

Impedance: 8Ω

Crossover Point: 70Hz to 130Hz

Low-Frequency Section

Acoustic Design: Horn reflex loaded

Low-Frequency Amplifier Requirement: 800W / ES1.8 from EPAK2500/R

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

Magnet Type: Ferrite

Diaphragm Material: Epoxy Reinforced Cellulose

Speaker Input

Speaker Input: AP4

Speaker Output

Speaker Output: AP4


Cabinet Material: Baltic birch

Handles: 4

Pole Mount: M20

Color: "Orange peeled" Matt Black or any RAL

Physical Dimensions

Height: 600 mm (23.62")

Width: 700 mm (27.55")

Depth: 750 mm (29.52")

Weight: 55,6 kg (121.2lbs)

Product code

  • KVV 987 004 - ES1.8

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