Definitive Technology CS9040 Center Channel Speaker


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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.

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SKU: CS9040 Category: Tags: , , Brand:


High-Performance Center Channel Speaker with Integrated 8″ Bass Radiator

Best Seat in
the House
Balanced Double Surround System™
Full Range
Integrated 8” Bass Radiator
Crystal Clear
Aluminum Dome Tweeters


Full Range Performance

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 soundfield 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.

Because this technology is utilized across the entire BP9000 Series, when integrated with other BP9000 models, the CS9040 contributes to a more uniform midrange soundstage throughout your listening environment. That means anchored, centrally focused dialog; full range reproduction of scores and sound effects; and a seamless flow of panned audio from loudspeaker to loudspeaker.

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.


“This is an excellent, powerful center channel speaker that presents dialogue clearly and with a real presence. Beyond being clear, this center conveys sound that is pleasing and easy on the ears. You can’t go wrong with the CS series of speakers, bring it home and you will see. Highly recommended. ”

—Hilly, Verified Customer Review


Details Make The Difference
Designed for Performance
It’s not just the full range sound and detailed driver performance that make the CS9040 the workhorse of your home theater sound system. We’ve left no stone unturned in engineering optimal center channel experiences and the CS9040 features resonance-free cabinetry and a disappearing design that’s ideal for movie night.
Anti-Resonant Construction
for clean and powerful sound
Strategically-placed bracing creates maximum rigidity with a totally inert, resonance-free cabinet for improved imaging and accuracy.

Disappearing Design
for focus on what matters
The CS9040 is wrapped in an acoustically transparent black cloth grille that won’t affect the sound. And as soon as you dim the lights, they disappear into your room—so you can focus on the movie, not your speakers.

Beautiful Music, Too
Not Just for Home Cinema
All the advances that make the BP9000 series the ultimate home cinema speaker system apply to beautiful music reproduction as well. That’s why the CS9040 is also revered for its extraordinary musicality—it’s like sitting with the mix engineer when watching concerts or music videos, or when listening to multichannel audio from FLAC, Blu-ray or SACD sources.


“The BP9000 system really impresses, with a big and dynamic performance that creates a fantastic sense of aural envelopment. The five speakers blend together seamlessly, creating a detailed and highly articulate soundscape that renders the individual instrumentation with precision.”

BP9000 Series Review, AVForums