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Definitive Technology CS9040 Center Channel Speaker

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  • $ 349
  • Regular price $ 549

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The CS9040 full range, high performance center channel speaker brings incredible clarity to your home cinema. You’ll experience every moment—from vocals, to score, to special effects—with nuanced detail and thrilling impact.

Clarity and Impact
The CS9040 features high-performance BDSS mid/bass drivers, aluminum dome tweeters, and an integrated 8” passive bass radiator. With the CS9040, you’ll hear center channel audio with a level of full range clarity and impact that’s unlike anything you have ever experienced before.

Integrated 8“ Bass Radiator for full range sound
The center channel is critical for more than just vocal clarity, it is also the location of much of the sound effects audio in films. Where most competitive center channel offerings narrowly focus only on reproducing voice dialog, the CS9040 provides full range representation of your center channel audio. The CS9040 achieves this through the integration of an 8” bass radiator, which works in harmony with the CS9040’s BDSS woofers to effectively double their bass producing surface area. That translates to richer, more impactful sound—front and center where you expect it. In addition, the presence of a bass radiator in the center of your sound field supports more even bass distribution throughout the room.

Balanced Double Surround System™ for the best seat in the house
At the heart of the CS9040’s speaker array are two innovative 4.5” Balanced Double Surround System™ drivers, designed to always place you in the best seat in the house. BDSS improves driver excursion, allowing the CS9040’s mid/bass drivers to play lower and blend with its built-in subwoofer and bass radiator.

Aluminum Dome Tweeters for crystal clear highs
The CS9040’s Aluminum Dome Tweeters feature ultralight, rigid construction that enables them to play significantly higher frequencies than we can hear with incredibly fast and accurate transient response. This provides effortless, distortion-free performance within and beyond the audible range—perfect for the enjoyment of high resolution audio.


  • Anti-Resonant Construction for clean and powerful sound
  • Disappearing Design for focus on what matters
  • Best Seat in the House
  • Full Range Impact
  • Crystal Clear Highs


  • Total Frequency Response: 50 Hz → 40,000 Hz
  • Nominal Impedance: 8 ohms
  • Max Sensitivity (1 watt @ 1 meter): 89 dB
  • Front Array Driver Complement
    • (1) 1" (2.54 cm) d (Round) Aluminum Dome - Tweeter
    • (2) 4.5" (11.43 cm) d (Round) BDSS Bass - Mid/Woofer
    • (1) 8" (20.32 cm) d (Round) - Bass Radiator
  • Materials: Aluminum
  • Enclosure Type: Acoustically Tuned Vent
  • Dimensions
    • Height: 5.95" (15.11 cm)
    • Width: 20.75" (52.71 cm)
    • Depth: 12" (30.48 cm)
    • Weight: 20 lbs (9.07 kg)

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov



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