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Alpine SPC-690C 6"x9" C-Series 300W 2-way Coaxial Speaker

Regular price $199.00
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The C-Series polypropylene woofer cone is extremely rigid and lightweight, this enables superior cone velocity for accurate sound and extended bass response. Furthermore, the Speaker Type_Component Speakers are designed with an integrated waveguide to ensure uniform sound dispersion for a clean response and optimised sound imaging.

Butyl Rubber Surround

The C-Series are equipped with butyl rubber surround to achieve a greater cone movement and x-max capabilities The results, high power output, sound accuracy and linearity, as well as superior bass response extension. This material is long-lasting and robust too so that your sound never degrades over the life of the speaker.

Compact Crossover / Silk Tweeter

These speakers are easy to install due to the compact snap-fit silk dome tweeter, swivel mount, and flush install bracket. The crossover network is small and can be separated to allow use in factory wiring.

Included 6” Fit Adapters and Grilles

Speaker grilles are available for several of the S-Series speakers and are sold separately.


  • Square Voice Coil with Kapton Bobbin
  • PP Woofer Cone
  • Integrated Wave Guide
  • Butyl Rubber Surround
  • Swivel Dome Tweeter
  • External Crossover
  • Grilles Included


Power Handling

  • Peak Power: 300 Watts
  • RMS Power: 75 Watts

Dimensions Woofer

  • Frame 165 mm
  • Mounting Depth: 60.2 mm
  • Mounting Height: 7.6 mm
  • Magnet: 80.0 mm


  • Frequency Range: 65 Hz – 18 kHz
  • Impedance: 4 Ohms
  • Sensitivity: 91 dB/W