Compact compound isobaric subwoofer


Compound isobaric VLF subwoofer

Exceptional low frequency performance for its enclosure size

Compact dimensions for easy venue concealment

Four high power 8" neodymium LF drive units

The i-8 is the smallest subwoofer manufactured by EM Acoustics, and represents a unique approach to low frequency reproduction in a small footprint enclosure. Updated for 2013, the i-8 now features neodymium drive units with higher excursion for improved reliability and reduced weight.

  • Useable low frequency response down to 35Hz
  • Low enclosure height allows under-seating positioning
  • Premium 15mm multi-laminate birch plywood enclosure
  • Black or white textured paint finish
  • Optional weather protection or RAL custom colours
  • Multiple threaded rigging and mounting points
  • Hex punched steel grille with acoustically transparent black foam backing

The i-8 was designed to provide a compact low frequency solution for a variety of applications. The unique design provides unprecedented sonic depth from an enclosure of this size. At home either as low frequency extension in cafes and bars or as an extra sonic effect in theatres and museums, the added low frequency that the i-8 can produce makes it suitable for many situations.

The enclosure contains four high power 8″ (203mm) neodymium LF drive units, loaded as two compound isobaric pairs. This design gives a useable response down to 35Hz, without any artificial equalisation. The i-8 can therefore add ‘depth and warmth’ to any system, even where larger subwoofers would normally have been used. The enclosure is constructed from premium multi-laminate Birch plywood, and is finished in impact resistant paint.

The enclosure is finished in black or white as standard, however RAL colour matching and weather protection options are available. Sixteen M10 threaded fittings around the enclosure allow suspension when in use. Two perforated steel mesh grilles covered with acoustically transparent black foam protect the drive units from damage and moisture.

The i-8 requires active high/low pass filters and a single amplifier channel capable of delivering 600-1200W RMS into a 4 ohm load. For optimum results, the EM Acoustics DQ10 or DQ20 Advanced System Amplifiers, or the AQ-10 or AD-9 power amplifier in conjunction with the DSC48 system controller (for loudspeaker protection) should be used.

Enclosure TypeCompound isobaric subwoofer
Components4 x 8" (203mm) neodymium LF drive units
Dimensions (HxWxD), mm/(ins)308 (12.1) x 530 (20.9) x 450 (17.7)
Net/Shipping Weight22/24kg (48.4/52.8lbs)
Frequency Response35Hz - 150Hz ± 3dB
Maximum SPL122dB continuous, 128dB peak
Power Handling600W RMS, 1200W program
Nominal Impedance4 ohms

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