Boston Acoustics

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Reference Standard Subwoofer

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Boston Acoustics SPG555.


  • 555 cm2 of surface area
  • 3¾ inches of peak-to-peak excursion
  • 3½ voice-coil
  • Radialvent® cooling technology
  • Only 26 Lbs! Thanks to Neodymium Lightweight design
  • RVC™ (Removable Voice Coil) allows coil to be exchanged without removing the woofer from the enclosure
  • SPS™ (Soft Part System) removable assembly enables field repair of the cone/surround/spider assembly
  • Can be field-stripped and custom painted, powder-coated, or plated
  • Work in multiple enclosures, both sealed and ported
  • Integral sealing gaskets simplify both standard and inverted mounting
  • Available in 4-ohm and 2-ohm versions

    View Woofer Size Chart


Nominal Impedance
4-ohm/ 2-ohm
Rated RMS Power Handling
1000 watts
Nominal Sd
Mounting Cutout Diameter SPG555 Cutout Template Mounting Depth
8-1/4" (210mm)
Linear Excursion
3-3/4 inches
Recommended Enclosure
1.0ft³ (28.3L) volume sealed

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