EM Acoustics EMS-51 Ultra Compact Full Range Enclosure

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EM Acoustics
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Showtechnix is Proudly the exclusive distributor of the EM Acoustics Audio Systems in New Zealand…


Introducing EMS-51 Ultra Compact Full range Enclosure


Midas UK Review here


The EMS-51 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 i-8 or EMS-112 subwoofers to make a truly fullrange system.  The EMS-51 is completely passive, yet outperforms many bi-amplified or DSP-processed designs.

The enclosure contains an 5” (127mm) neodymium LF drive unit, linked via the internal passive crossover network to a 1.1” (28mm) diaphragm, HF soft dome drive unit which produces a 75° conical dispersion pattern.  Unusually for a loudspeaker of this size, it is an infinite baffle design which gives a smoother LF rolloff and a much more robust LF performance than would be expected from an enclosure of this size.  The robust enclosure is constructed from premium multi-laminate Birch plywood and is finished in impact resistant textured paint.  The front of the loudspeaker is protected by a rigid steel grille.  Various threaded fixings are provided in the enclosure for the included rigging hardware.  RAL colour matching and weather protection options are also available if required.

The EMS-51 requires a single amplifier channel, and should be used with professional power amplifiers capable of delivering 300-500W RMS into an 8-ohm load.  For best results, the EM Acoustics AQ-3 power amplifier should be used.

 Enclosure Type two-way passive, infinite baffle


Components1 x 5″ (127mm) LF drive unit1 x 1.1″ (28mm) HF soft dome drive unit

Dimensions (HxWxD), mm/(ins)250 (9.9) x 140 (5.5) x 175 (6.9)

Net/Shipping Weight4.5/5.3kg (9.9/11.7lbs)

Frequency Response80Hz – 20kHz /- 3dB

Nominal Dispersion75° conical (-6dB points)

Maximum SPL113dB continuous, 119dB

peakPower Handling200W RMS, 400W

peakNominal Impedance8 ohms

ApplicationsSpeech reinforcement, music playback, fills & delays



Technical Resources


Product Datasheet


User Manual


Additional information

Weight 5.3 kg
Dimensions 18 × 25 cm

White, Custom Colour, Black