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Focal Utopia Be® 13 WS

Shallow-mount 5" 4-ohm subwoofer

Item #: 09113WS

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Focal's top-of-the-line Utopia Be speakers exemplify Focal's dedication to musical perfection. The sound enthusiasts at Focal worked without constraints to develop what they consider to be the ultimate in speaker technology. Utopia Be subwoofers employ unique materials and unparalleled construction to add incomparable dynamics and natural sound to your system.

Focal's composite sandwich "W" cone features a layer of durable structural foam between two layers of precision-coated glass — the resulting membrane demonstrates exceptional agility, rigidity, and damping to produce realistic bass notes without distortion. A supple rubber surround maintains precise control over the cone, even during extreme excursion. A dense neodymium magnet, high-linearity voice coil, and zinc alloy basket give the sub rock-solid power and strength.

The compact Utopia Be 5" 13 WS subwoofer fits in places most other component subs can't, and you'll be impressed by its sound quality and bass impact. It handles up to 75 watts RMS and works best in small sealed enclosures. Utopia is defined as an "ideal place or state," and these hand-crafted Focal subs let you take your music to that level.

To drive this single subwoofer, we recommend a mono amplifier rated between 55 and 110 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Priced per speaker

Product Highlights:

  • 5" 4-ohm subwoofer
  • "W" structured foam and glass composite sandwich cone with rubber surround
  • zamak (zinc alloy) basket
  • neodymium magnet
  • power handling: 25-75 watts RMS (150 watts peak power)
  • frequency response: 36-1,500 Hz
  • sensitivity: 83.71 dB
  • top-mount depth: 2-5/8"
  • sealed box volume: 0.11-0.18 cubic feet
  • warranty: 1 year
  • 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.

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Hands-on research

What's in the box?

Download owner's manual

  • 5" Compact subwoofer
  • Trim ring
  • Cloth grille
  • 4 Mounting screws
  • 4 Speed-clips
  • User's Manual (Eng/Fre)
  • Warranty ID card
  • FOCAL decal

Product Research


Overview: The Focal Utopia Be (13WS) is a 5'" compact subwoofer with a rubber surround, high linearity voice coil (2-layer), neodymium magnet, and zamak (zinc alloy) basket.

"W" Composite Sandwich Cone Woofer: The Focal Utopia Be (13WS) 5" compact subwoofer features a "W" composite sandwich cone woofer. The rigidity offered by the glass layers delivers extreme linearity over a wide frequency range without and low frequency distortion. The structural foam central core's lightness allows optimal acceleration, without delay, while damping derived from the "W" material produces a neutral, coloration free sound.

Speaker Terminals: The Focal Utopia Be (13WS) 5" compact subwoofer features a pair of gold-plated set-screw terminals to attach your amplifier's speaker wire.

Trim Ring and Grille: The Focal Utopia Be (13WS) 5" compact subwoofer comes supplied with a mounting trim ring and black cloth grill

Sealed Box Enclosure: The Focal Utopia Be (13WS) 5" compact subwoofer has been optimized to work in a sealed box enclosure. This type of enclosure ensures sub-bass frequencies remain full and controlled. The recommended sealed box volume for the Focal Utopia Be (13WS) is 0.11 to 0.18 cubic feet.

Our Product Research Team

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