The Focal Slatefiber C 165 SF is a 6.5 inch (165mm) 2-way coaxial speaker pair rated at 80W RMS, part of Focal's second-generation Slatefiber range. It features a French-made Slatefiber cone and an aluminium/magnesium inverted dome tweeter.

Key specifications

• Type: 2-way coaxial speakers
• Size: 6 1/2" (165mm)
• Power handling: 80W RMS, 160W maximum
• Sensitivity: 91dB
• Frequency response: 60Hz - 21kHz
• Impedance: 4 ohms
• Depth: 2.75" (70mm)
• Grilles: included

Focal C 165 SF

165mm 2-way coaxial speakers.

The Slatefiber C 165 SF delivers clear, powerful, and balanced sound reproduction. Its Slatefiber cone, made in France at Focal's workshops, combined with the aluminium/magnesium inverted dome tweeter, ensures detailed, uniform sound for every drive.

• Exclusive Slatefiber technology — cone made in France in Focal's workshops
• High power handling for long-lasting performance, even at high volume
• Optimised efficiency to limit amplification requirements
• Solid design and rigorously selected materials for long-term reliability
• Grilles included

The second-generation Slatefiber range is designed and developed by Focal engineers to combine precision, responsiveness and robustness. The range spans passive kits to subwoofers, offering sound coherence across all models and straightforward installation across a wide range of vehicles. If you're looking for a component alternative at the same size, Focal also offer the Focal 165 AS Access Series 2-way 6.5" component speakers.

Slatefiber Technology

Made from recycled carbon fibres, the Slatefiber cone offers ideal rigidity and damping, delivering rich, precise, and stable sound — even at high power — with Focal's signature character.

Al/Mg Tweeter: Precision and Brilliance

The aluminium/magnesium inverted dome tweeter provides clarity, finesse, and wide dispersion. Multiple mounting options — surface, factory location, or angled support — allow seamless integration.

Durability & Premium Design

The C 165 SF features an aluminium rotor design chassis, robust butyl surround, and premium materials throughout. It's built to last and straightforward to install across a wide range of vehicles.

• Nominal power: 80W RMS
  
• Maximum power: 160W
  
• Sensitivity: 91dB
  
• Nom. impedance: 4Ω
  
• Cone: Slatefiber
  
• Surround: Butyl
  
• VC diameter: 25mm / 1"
• Depth: 2.75" (70mm)
  
• Former: Kapton
  
• Layers: 2
  
• Wire: Copper
  
• Net weight: 1050g / 2.31lbs
  
• Frequency response: 60Hz-21kHz

• Focal Slatefiber C 165 SF
• Screws
• Mounting Brackets
• Grilles