Definitive Technology® BP9000 Series 4.5" Black Center Channel Speaker

Model #: CS9040
Definitive Technology
At a Glance

Available in Store Only
$549.95Save $NaN

Get to know this product.

The CS9040 center channel speaker delivers immense clarity and focus to the vocal range, accurately reproducing even the most demanding audio content so you can experience every detail of pure home theater. Aluminum dome tweeters, high-performance drivers, and integrated bass radiator let you hear and feel every note as the artist intends. Timeless, minimalist design. This is what obsession sounds like.

  • High-performance center channel speaker: 50 Hz – 22 kHz
  • Powerful speaker array for remarkable, focused vocal clarity
  • Integrated 8” bass radiator
  • Iconic and visually powerful design features machined, aircraft-grade aluminum construction

BDSS – Balanced Double Surround System

Improves driver excursion which results in the selected driver producing bass output usually associated with a larger driver, while retaining the improved dispersion and midrange definition of a smaller driver.

Acoustically Transparent Grille

Enjoy the subtle elegance of the speaker design without having to remove a speaker grille to enjoy natural, uncolored sound.

Totally Inert, Resonance-Free Cabinet

Maximum rigidity with strategically placed bracing improves imaging while reducing resonance, further reinforcing our clean and powerful sound.



Sold AsEach
Total Pieces1
Height5.95" (15.11 cm)
Width20.75" (52.71 cm)
Depth12" (30.48 cm)
Weight20 lbs (9.07 kg)

Front Array Driver Complement

Tweeter(1) 1" (2.54 cm) d (Round) Aluminum Dome - Tweeter
Midrange(2) 4.5" (11.43 cm) d (Round) BDSS Bass - Mid/Woofer
Bass Radiator(1) 8" (20.32 cm) d (Round) - Bass Radiator

Audio Quality

Max Sensitivity (1 watt @ 1 meter)89 dB


Speaker Inputs(1) Pair of 5-Way Binding Posts - Gold Plated


Electronics Warranty3 Years
Cabinet Warranty5 Years
Drivers Warranty5 Years
Original Purchaser OnlyYes

Misc. Specs

Product Weight (lbs.)20
Color Finish NameBlack
Frequency Response50 Hz – 22 kHz
Enclosure TypeAcoustically Tuned Vent
Impedance8 ohms
Sensitivity89 dB
Speaker TypeCenter Channel Speakers
Depth (in.)12
Height (in.)5.95
Width (in.)20.75
WarningProposition 65 Warning for California Residents