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Boston Acoustics G212-4

12" 4-ohm subwoofer

Item # 065G2124

Need help?
Contact our Virginia-based experts.
Discontinued item

Item # 065G2124

Need help?
Contact our Virginia-based experts.

About the Boston Acoustics G212-4

Highly efficient bass performance

Boston's mission: build a sub that will deliver loads of bass when connected to a moderately-powered amplifier. Efficient G2 subwoofers accomplish the mission, borrowing many design features from the top-of-the-line G5 Series subs, with the quality construction you expect from a Boston Acoustics speaker.

Advanced materials and construction

SureSet terminals

The G212-4 12" woofer features a thick foam surround that lets its cone move freely, for efficient output and warm-sounding bass. The SureSet™ terminals come equipped with two fuses to help protect the voice coil during momentary overdrive, and allow you to change the woofer out quickly in case a fuse is blown. RadialVent cooling improves power handling by using the cone's motion to pump hot air away from the sub's internal structure.

Works in sealed and ported enclosures

This subwoofer is optimized for use in small, sealed boxes — ideal if you want tight, accurate bass. Like a little more boom? No problem, it's suitable for larger ported boxes as well. Whatever your goal, Boston G2 subs are ready to take on the challenge.

Priced per speaker

Product highlights:

  • 12" 4-ohm subwoofer
  • copolymer woofer cone with foam surround
  • RadialVent cooling for increased power handling
  • power range: 75-300 watts RMS
  • frequency response: 20-350 Hz
  • sensitivity: 89.6 dB
  • mounting depth: 7-1/16"
  • sealed box volume: 1.00 cu. ft.
  • ported box volume: 2.00 cu. ft.
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # G212-4

What's in the box:

  • 12" Woofer
  • 8 M4 T-Nuts
  • 8 M4 lock washers
  • 8 M4 screws (length 1-1/2")
  • 8 M4 self-tapping screws (length 1-1/2")
  • Specifications sheet
  • Warranty sheet
  • Product Registration card

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More details on the Boston Acoustics G212-4

Pat M.

Product Research

Enclosure Recommendations


Chassis: The Boston Acoustics G2 series subwoofers are built upon a rigid stamped steel chassis. It features the patented RadialVent cooling technology which directs airflow around the 2-1/2-inch voice coil for increased power handling.

Materials: The G2124 woofer has a co-polymer woofer cone with a raised polypropylene dustcap and a large foam surround. The wrap-around gasket gives you a good seal whether you top-mount or bottom-mount the woofer.

SureSet: The speaker terminals are equipped with two 5-amp ATC fuses providing voice coil protection under transient conditions such as accidental momentary overdrive. Use of the standard automotive style fuses allows you to quickly service the woofer in case a fuse is blown during usage. Note: The fuses do not protect against voice-coil failure resulting from long term high power abuse.

Terminals: The woofer has rugged spring post terminals that accept up to 8-gauge bare wire or pin connectors.

Long Excursion: The woofer has a 2-inch peak-to-peak excursion for accurate deep bass output from a small sealed enclosure.

Enclosure Recommendations

Sealed Enclosure: The G2124 woofer is optimized for use in a small sealed enclosure with a 1.0 cu. ft. internal volume.

Ported Enclosure: The woofer can also be used in a 2.0 cu. ft. ported enclosure with a 4" diameter, 13" long port, and tuned to 34Hz.

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