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Sony XM-GS100 330W x 1 Subwoofer Amplifier

Unique woofer shape
Sony created their GS series subwoofers with performance in mind. The Sony XS-GS120LD 12" subwoofer features a unique five-sided cone that reduces standing waves that can diminish bass output. Sony use a mica-reinforced cellular glass fiber material to create an extremely light and rigid cone that's able to move faster and more accurately — you'll feel every low note. The dual 4-ohm voice coils give you a little extra flexibility in setting up your system now or adding another Sony sub down the road.

Built to last (and rock)
This sub will handle up to 400 watts RMS, and a rugged rubber surround helps this Sony handle big power for a long, long time. Despite its unique design, this sub fits into a standard round cutout, plus it's equally at home in a ported or sealed enclosure. And best of all, Sony backs up these workhorse subs with a cool 3-year warranty.

To drive this single subwoofer, we recommend a mono amplifier rated between 300 and 600 watts RMS at 2 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Product Highlights:

  • 12" subwoofer with dual 4-ohm voice coils
  • mica reinforced cellular glass fiber cone with five-sided design
  • rubber surround
  • grille not included
  • power range: 50-400 watts RMS (1500 watts peak power)
  • frequency response: 30-1000 Hz
  • sensitivity: 84 dB
  • mounting depth: 5-1/2"
  • sealed box volume: 0.77 cubic feet
  • ported box volume: 1.13 cubic feet
  • warranty: 3 years
  • Our 60-day money-back guarantee

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Sony XS-GS120LD Reviews

Hands-on research

What's in the box?

Download owner's manual

  • One 12" Dual 4-ohm voice coil woofer
  • 1 Strip of self-adhesive foam gasket
  • Ten 1-3/8" Self-tapping screws
  • Installation/Connections sheet with Thiele-Small parameters/ Enclosure recommendations/ Template (English/ French/ Spanish)
  • Warranty information

Product Research


P5 Cone Design: The five-sided XS-GS120LD uses an MRC cone (Mica Reinforced Cellular glass fiber composite) to reduce weight and increase rigidity, delivering deep bass response.

Rubber Surround: The Hash Marks on the rubber Stroke Stabilizer surround provide added stability.

Dual Voice Coils: For increased system flexibility, the woofer has two 4 ohm voice coils. When the voice coils are wired in parallel, the woofer presents a 2 ohm load. When the voice coils are wired in series, the woofer presents an 8 ohm load.

Binding Posts: The binding post wire terminals will accept pin connectors, spade lugs, single banana plugs, and bare wire up to 10 gauge. The binding posts are spaced too close together to accept dual banana plugs.

Enclosure Compatibility: This woofer can provide extended bass in sealed and ported enclosures:

  • Sealed Enclosure Volume: 0.77 cubic feet
  • Ported Enclosure Volume: 1.13 cubic feet using one 3" diameter x 11-3/4" long port

Specification Note: Sony's rated power spec for the XS-GS120LD is 400 watts (derived using IEC 60268-5 standards). They also list the CEA 2031 compliant RMS power as 520 watts. We've adopted the 380 watt rating simply because it's the more conservative figure.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.