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Definitive Technology® BP9000 Series 8" Bipolar Tower Speakers-Black

Model #: BP9040-PAIR
Definitive Technology
At a Glance
The BP9040 tower speaker is your answer for remarkable, immersive, room-filling sound so you can experience every detail of pure home theater. Forward Focused Bipolar Array expands your room’s entire soundstage. Aluminum dome tweeters, high-performance drivers, integrated powered subwoofer and Intelligent Bass Control let you hear and feel every note as the artist intends. Dolby Atmos / DTS:X compatibility let you explore true multi-dimensional sound. Timeless, minimalist design. This is what obsession sounds like.
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Protection Plans

2 Year SquareTrade Warranty


x 1

4 Year SquareTrade Warranty


x 1

Get to know this product.

Aluminum Dome Tweeters

Crystal clear highs bring the most demanding audio to life. Our tweeters play higher in frequency than what is heard by the human ear, creating an authentic reproduction of sound as the artist intends in the studio or concert hall.

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.

Cast Aluminum Base with Spikes and Floor Glides

The wide footprint increases overall stability of the tower speaker, while the addition of spikes or floor glides help keep your speakers firmly in place whether on carpet or other solid floor surfaces like hardwood or cement.

LED Backlit Definitive Technology Logo

To highlight the integrated powered subwoofer and show that your speaker is receiving a signal, we’ve added an LED logo at its bottom front panel. Turn it on or off at your leisure and also note that it will automatically turn off/standby after 20 minutes of no active signal.

Useful Documents


Total Pieces1


Included Accessories(1) Removable Base; (4) Carpet Spikes; (4) Hard Floor Glides
Optional Accessories(1) A90 - High-Performance Height Speaker Module for Dolby Atmos/DTS:X - Sold Separate


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

Shipping Cartons

Carton 143.78" (111.2 cm) h x 13.15" (33.4 cm) w x 18.42" (46.79 cm) d - 56 lbs (25.4 kg)

Floor Standing Speaker

Quantity Included1
AvailabilityUS; Internationally
Height Without Base39" (99.06 cm)
Width Without Base6" (15.24 cm)
Depth Without Base13" (33.02 cm)
Weight36 lbs (16.33 kg)
Height With Base40.25" (102.24 cm)
Width With base13" (33.02 cm)
Depth With Base11" (27.94 cm)
Base MaterialAircraft Grade Aluminum
Leveling MachanismYes
Front Array Driver Enclosure TypeAcoustically Tuned Vent
Front Array Driver Complement(1) 1" (2.54 cm) d (Round) Aluminum Dome - Tweeter; (2) 4.5" (11.43 cm) d (Round) - Midrange; (2) 8" (20.32 cm) d (Round) - Bass Radiator; (1) 8" (20.32 cm) d (Round) - Subwoofer
Rear Array Driver ComplementAcoustically Tuned Vent
Top Array Driver Complement(1) 1" (2.54 cm) d (Round) Aluminum Dome - Tweeter; (1) 4.5" (11.43 cm) d (Round) - Midrange

Audio Quality

Total Frequency Response22 Hz ? 40,000 Hz
Nominal Impedance8 ohms
Max Sensitivity (1 Watt @ 1 Meter)92 dB

Internal Amplifier

Amplifier ClassClass D

Misc. Specs

Product Weight (lbs.)36.0000
Impedance8 ohms
Number of Speakers2
Depth (in.)13
Height (in.)38.25
Width (in.)6
WarningProposition 65 Warning for California Residents