EM Acoustics S-48 Compact Passive Subwoofer

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EM Acoustics
SKU: S-48 Categories: , , ,


EM Acoustics S-48 Compact Passive Subwoofer


The S-48 is the smallest subwoofer manufactured by EM Acoustics, and represents a unique approach to low frequency reproduction in a small footprint enclosure. The S-48 features high-excursion neodymium drive units for reduced weight whilst retaining surprising sonic performance from an enclosure of this size.

  • Exceptional low frequency extension for enclosure size
  • Compact enclosure dimensions for easy concealment when in use
  • 4 x 8″ neodymium LF drive units
  • Cinematic response from a very small enclosure
  • Low enclosure height allows positioning under seating or in ceiling voids
  • Impact and weather resistant black, and textured white finishes as standard
  • Multiple M10 flying points
  • RAL colour options


The S-48 was designed to provide a compact low frequency solution for a variety of applications – both installation and mobile. The unique design provides unprecedented sonic depth from an enclosure of this size. At home either as low frequency extension in cafés and bars or as an extra sonic effect in theatres and museums, the added low frequency that the S-48 can produce makes it suitable for many situations.

The compact enclosure contains four high power 8” (203mm) neodymium LF drive units, loaded as two compound isobaric pairs. This design gives a usable response down to 35Hz, without any artificial equalisation. The S-48 can therefore add ‘depth and warmth’ to any system, even where larger subwoofers would normally have been used.  The small footprint and low enclosure height allow the S-48 to be discreetly hidden away in locations which otherwise would not be possible to use.

The rugged enclosure is constructed from premium 15mm (5/8”) multi-laminate Birch plywood, rebated, screwed and glued together for maximum strength. Sixteen M10 threaded fixings are provided (four on each of the top, bottom and sides) to allow suspension of the enclosure if required. Connections are via two Neutrik® speakON™ NL4 connectors on a recessed rear panel for input and enclosure link. The enclosure is finished in a rugged black textured polyurethane finish as standard, however white textured paint and RAL colour matching options are available as well as a dedicated outdoor version with increased weather protection for permanent outdoor use. Two perforated steel grilles backed by acoustically transparent black fabric protect the drive units from damage and moisture. For service purposes, the grilles are easily removable, and the rear pair of drive units can be accessed via a removable door on the rear panel of the enclosure.

The S-48 requires active high/low pass filters and limiting, and a single amplifier channel capable of delivering 600-1200W RMS into a 4 ohm load. For optimal results, the DQ Series Advanced System Amplifiers should be used.


Additional information

Weight 26 kg
Dimensions 30.8 × 53 × 45 cm

Custom Colour, Black, White