S-218

Reflex Loaded Subwoofer

S-218

High power 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
S-218 - EM Acoustics
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.
  • Large format subwoofer where high SPL and extended frequency response required
  • Tour-grade castors included
  • Protective floor runners and matching stacking recesses
  • Protective transport accessories available
  • Impact and weather resistant black or white textured finish as standard
  • RAL colour and enhanced weather protection options

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 an impact and weather resistant black or white textured polyurethane finish as standard, though RAL colour matching and enhanced weather-protected outdoor options are available. 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 hex-punched stainless steel 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 external active high/low pass filters and a single amplifier channel to function correctly – as such it is recommended to be used with EM Acoustics’ range of Advanced System Amplifiers. It is however possible to use other DSP-enabled amplifiers, or conventional amplifiers with external DSP. Suitable DSP settings are provided on the EM Acoustics website. The amplifier should be capable of delivering 3500-4000W RMS into a 2-ohm load. For cardioid arrays, separate amplifier channels are required for the rear-firing subwoofer(s) due to the different processing needed.

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
(for full SPL output)*
DQ6: Not recommended, DQ10: Not recommended, DQ20: 1 per channel
Di06: Not recommended, Di10: Not recommended, Di20: Not recommended
Power Handling 2000W RMS, 4000W program
Nominal Impedance 2 ohms

* Higher numbers of loudspeakers per amplifier channel may be possible at reduced overall SPL.  Please consult the user manual for more details.

 

 

 

 

 

 

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S-218

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Product Datasheet

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User Manual

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2D Product & Accessory drawings in DWG format

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2D Product & Accessory drawings in PDF format

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Revit Family

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Architects Specifications

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Acoustic Simulation Data

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Download all

S-218

pdf

Product Datasheet

Size: 642.71 KB
Date modified: 25-01-2024
pdf

User Manual

Size: 8.34 MB
Date modified: 03-05-2024
zip

2D Product & Accessory drawings in DWG format

Size: 12.76 MB
Date modified: 25-04-2024
pdf

2D Product & Accessory drawings in PDF format

Size: 554.88 KB
Date modified: 25-04-2024
rfa

Revit Family

Size: 4.76 MB
Date modified: 11-04-2024
docx

Architects Specifications

Size: 876.88 KB
Date modified: 10-05-2022
zip

Acoustic Simulation Data

Size: 1.00 MB
Date modified: 10-04-2024