Compact two-way passive loudspeaker


Compact two-way passive reflex-loaded loudspeaker

Asymmetrical multi-angled cabinet for FOH or stage monitor use

Signature EM Acoustics passive crossover for unprecedented frequency and phase response

8" LF drive unit, 1" exit neodymium HF compression driver

The EMS-81X is a compact two-way multipurpose loudspeaker intended for a variety of applications – either as a stand-alone product, or else with the incorporation of EMS-112 or other EMS Series subwoofers to make a truly fullrange system. The EMS-81X is completely passive, yet outperforms many bi-amplified or DSP-processed designs.

  • Rotatable 90° x 60° dispersion pattern
  • Premium 15mm multi-laminate birch plywood enclosure
  • Black or white textured paint finish
  • Optional weather protection or RAL custom colours
  • Multiple threaded rigging points compatible with OmniMount and Powerdrive brackets, pole mount socket
  • Hex punched steel grille backed with acoustically transparent black fabric

The enclosure contains an 8” (203mm) LF drive unit, linked via the internal passive crossover network to a 1.7” (44mm) diaphragm, 1” (25mm) exit HF compression drive unit. The HF drive unit is coupled to a constant-directivity waveguide, which produces a 90° x 60° dispersion pattern which can be easily rotated if required. The multi-angle enclosure along with the rotatable HF waveguide allows use in both horizontal and vertical orientations, as well as use as a compact stage monitor. The robust enclosure is constructed from premium multi-laminate Birch plywood and is finished in impact resistant textured paint. Two NL4 connections are provided on the rear for input and enclosure link. The front of the loudspeaker is protected by a rigid steel grille backed with acoustically transparent fabric. A flush handle, 35mm polemount socket and various threaded fixings are provided in the enclosure for optional rigging hardware. RAL colour matching and weather protection options are also available if required.

The EMS-81X requires a single amplifier channel, and should be used with professional power amplifiers capable of delivering 400-500W RMS into an 8-ohm load. For optimum results, the EM Acoustics DQ Series Advanced System Amplifiers, or the AQ Series power amplifiers in conjunction with the DSC48 system controller (for loudspeaker protection) should be used.

Enclosure TypeTwo-way passive, reflex loaded
Components1 x 8" (203mm) neodymium LF drive unit
1 x 1" (25mm) exit neodymium HF drive unit
Dimensions (HxWxD), mm/(ins)

462 (18.2) x 262 (10.3) x 261 (10.3)

Net/Shipping Weight13/14kg (28.6/30.8lbs)
Frequency Response75Hz - 20kHz ± 3dB
Nominal Dispersion90° x 60°, rotatable (-6dB points)
Maximum SPL120dB continuous, 126dB peak
Power Handling250W RMS, 500W program
Nominal Impedance8 ohms

DFB-81X dual enclosure flying plate set

FC-81Xh horizontal flying cradle

FC-81Xv vertical flying cradle

Case Studies


Lofty Status at Upmarket Clapham Venue

Doing demonstrations to clients is something we love – when all is said and done, they want to be buying a product that is not only going to do the job, but they like the sound of as well.

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