S-218

Reflex Loaded Subwoofer

S-218

High power compact reflex subwoofer

Current
Incredible power density
Exceptional frequency and impulse response ensure fast, accurate low frequencies
2 x 18″ neodymium high-excursion LF drive units
The S-218 is a high-power subwoofer system, designed to fulfil the most demanding applications where scalability and single-enclosure use are as important as sonic performance. S-218 subwoofers are inherently scalable – they can be used as single units, or in large numbers for filling arena or stadium shows. The substantial enclosure houses a pair of reflex-loaded 4.5” voice coil, 18” (457mm) neodymium LF cone drive units. Like all EM Acoustics products, headroom is key. Peak-to-peak linear cone travel is 28mm, meaning large amounts of low frequency information can be produced by a surprisingly small and lightweight subwoofer enclosure.
  • Impact and weather resistant black, and textured white finishes as standard
  • RAL colour and weather protection options
  • Tour-grade castors included
  • Protective floor runners and matching stacking reccesses
  • Protective cover accessories available

The S-218 requires an active crossover to function correctly – although the choice of filter points is very wide, allowing the user to tailor the response to exactly what is required. Cardioid DSP program settings are also available to create arrays with significant rejection to the rear of the subwoofers.

The robust enclosure is constructed from premium 18mm (3/4”) multi-laminate Birch plywood – rebated, screwed and glued together. The enclosure is finished in black textured paint as standard, however RAL colour matching as well as weather protection options are available if required. Due to the extremely high cone travel available, enclosure rigidity was key in the design – as such the inside of the enclosure, including the enormous port in the centre – are rigidly braced in all dimensions. Runners are provided on the bottom of the enclosure and on one end to protect the paint finish when in use either lying down or stood on-end, and recesses on the top of the enclosure allow stable stacking of arrays. Eight flush bar handles are fitted as standard, and a tough perforated grille backed with acoustically-transparent black mesh protects the drive units from damage, which can be quickly removed for service purposes.  Input is provided from a single Neutrik NLT4 connector on the rear. For ease of movement the S-218 is supplied with tour-grade castors.

The S-218 requires active high/low pass filters and a single amplifier channel, and as such should be used with professional power amplifiers capable of delivering 3000-4500W RMS into a 2 ohm load. For optimal results, the DQ20 Advanced System Amplifier should be used.

Enclosure Type High power reflex subwoofer
Components 2 x 18″ (457mm) high excursion neodymium LF drive units
Dimensions (HxWxD), mm/(ins)  550 (21.7) x 1300 (51.2) x 850 (33.5)
Net/Shipping Weight 102/108kg (224.4/237.6lbs)
Frequency Response 28Hz – 150Hz ± 3dB
Maximum SPL 137dB continuous, 143dB peak
Loudspeakers per amplifier DQ6*: 1 per channel, DQ10*: 1 per channel, DQ20: 1 per channel
Power Handling 2000W RMS, 4000W program
Nominal Impedance 2 ohms

* Whilst the DQ6 and DQ10 will operate the S-218, they will not allow the subwoofer to reach its full potential and as such should only be used in low SPL environments.

 

 

 

 

 

 

Applications

Case Studies using this Product

Case Studies using this Product