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GTuned high performance subwoofer enclosure


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Boston Acoustics SPG555.

Looking for a drop-in subwoofer solution? Look no further than the GTuned™ high performance subwoofer enclosures. Every enclosure has been designed to optimize our subwoofers and deliver maximum performance—regardless of listening tastes or budget.

  • PowerVent™ tuning for optimum efficiency, impact and extension
  • High quality 3/4" MDF enclosure with glued and dado ends with 1-1/2” (3/4” x 2) baffle for provides increased structural rigidity
  • Black and Gray two-tone automotive grade carpet
  • Integrated vent offers ample surface area to avoid port noise while providing additional structural rigidity to the enclosure
  • Heavy-duty nickel plated input terminals accept up to 10 AWG wire
  • 1000 Watts RMS / 2000 Watts Max power handling
  • 2Ω impedance, perfectly matched to the GTA-1000m amplifiers

Boston SPG555 Subwoofer
Revolutionary! No word better describes the patent-pending Boston Acoustics SPG555 reference subwoofer! It uses a powerful neodymium structure that reduces it's weight to approximately half of other designs. Add in features such as our unique RVC & SPS replaceable systems, compact size, minimal weight construction, powerful yet accurate output, and you have a reference subwoofer unlike any other. In other words, what you have come to expect from all Boston Acoustics car audio products regardless of price.

SPG555 Features:

  • 555 cm2 of surface area
  • 3-3/4-inches of peak-to-peak excursion
  • 3-1/2 voice-coil
  • Radialvent® cooling, for increased power handling
  • Only 26 Lbs! Thanks to Neodymium lightweight design

Terminal Plate
The GTuned SPG555PS features heavy-duty nickel plated input terminals that accept up to 10 AWG wire.

GTuned Port
The SPG555PS uses an integrated port that offers ample surface area to avoid port noise while providing additional structural rigidity to the enclosure. Relying on a longstanding Boston technique, the GTuned SPG555PS enclosure features PowerVent™ tuning, delivering a perfect blend of extension, impact and efficiency.


Power Handling
1000W RMS
Enclosure Type
Q-Tune™ Setting
34Hz @ 1.0
Tuning Frequency
Top Depth
Bottom Depth

Customer Reviews

Reviewer: TJ

Absolutly amazing set up, the sub in this pre-fab box hit so low and hard it knocks the breath out of you. There is also no end to the power, this sub will take what ever you feed it. And it out pounds my dual 12's i used to have w/ the same amp! A++++

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