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

Customer Reviews

Reviewer: Steven O

Got this 13 inch 2 ohm sub for my truck and it poundss. its a really good clear loud sub. Anyone that has been in my truck gets out with a headache. Thinking about putting one more in there. Thanks BA

Reviewer: Jake

Has to be one of the best speakers i've ever come across. Everything on the speaker is replaceable or repairable at a descent cost. As far as the bass goes, i have an 06 jetta. I've been through systems trying to push them to where you can actually hear it outside the car. With the SPG-555, i have no problem whatsoever. I am running an audiopipe 1500 class d 1 ohm stable amp, works perfectly with the 2 ohm coils in the SPG-555. My next project is to have a double box built with two of these bad boys in it, and then have to radiators installed in the back, same amp. It would be awesome if Boston had boxes already built for it tho.

Reviewer: DeanS

I put this in my truck using a BA 2300 amp. Wicked combination. This thing thumps a helluva lot. You could never go wrong with Boston Acoustics for speakers.

Reviewer: Josh

I have 2 of the 2ohm subs in my regular cab ram in a sealed enclosure with about half power and they are awesome subs. The clarity is great and they have bass for days. Hit 142.6 at a local shop while tuning them the second day they were in, pretty happy with them. I would buy more if they would fit. :)

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