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Definitive Technology BP9040 High Power Bipolar Tower Speaker with Integrated 8" Subwoofer

Model: IECA-A UPC: 747192126452 Item: 166602

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104 E Vine St. Hatfield, PA 19440
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(866) 961-7781
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754 Route 309 (Bethlehem Pike) Montgomeryville, PA 18936
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(215) 368-8343
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38 Greenfield Avenue, Ardmore, PA 19003
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BP9040 High-Performance Tower Speaker with Integrated 8” Powered Subwoofer

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.

Shop the entire BP9000 series line and see how we've crafted our own custom speaker packages with the BP9040 here.

    • High-performance Bipolar tower speaker: 29 Hz – 22 kHz
    • Powerful, Forward-Focused Bipolar speaker array for wide and immersive sound dispersion
    • Integrated 8” powered subwoofer and dual bass radiators
    • Intelligent Bass Control offers enhanced bass while maintaining overall tonal balance
    • Dolby Atmos and DTS:X compatible with A90 speaker accessory (sold separately)
    • Iconic and visually powerful design features machined, aircraft-grade aluminum construction
    • Totally inert, resonance-free cabinet structure
    • (2) 1”aluminum dome tweeters for crystal clear highs
    • (3) 4.5"mid-range drivers with patented Balanced Double Surround System (BDSS)technology
    • (1) 8” woofer and (2) 8” bass radiators

    Patented Forward-Focused Bipolar Array (FFBP)

    Forward Focused Bipolar Array offers the ultimate balance between room-filling sound and a precise center image, while giving you total placement flexibility.

    Integrated 8” Powered Subwoofer and Dual Bass Radiators

    The best loudspeaker is one that reproduces balance between the highest highs down to ground-shaking lows as accurately as possible. Definitive's integrated powered subwoofer matched with its respective bass radiator offer deeper, more impactful bass from the tower speaker without the need to add a separate subwoofer.

    Intelligent Bass Control

    Intelligent Bass Control™ is Definitive's latest advancement that gives you the ability to modulate deep bass up or down in level while simultaneously maintaining mid-range tonal balance.

    Dolby Atmos Certified & DTS:X Compatible

    It’s so simple!  An integrated hidden connector port in the BP9040 fits the A90 elevation speaker module seamlessly (sold separately). Remove the magnetically-sealed and acoustically treated aluminum top panel from the floorstanding speaker and align and place the A90 speaker module to enjoy the immersive, multi-dimensional sound of Dolby Atmos! A Dolby Atmos/DTS:X enabled receiver and Dolby Atmos/DTS:X encoded source material is required.

    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 the 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.

    Minimalist Design, Timeless Appeal

    Powerful minimalist aesthetic with precision-machined components creates a sophisticated look to complement the most distinguished home theater. The sharp lines of the BP9000 Series also echo its precise sonic signature.

    LED Backlit Definitive Technology Logo

    To highlight the integrated powered subwoofer and show that your speaker is receiving a signal, Definitive has 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.


    BP9040 Specifications


    • Tweeter (# per system) Improved 1" annealed aluminum dome (2)
    • Mid-bass (# per system) 4.5" BDSS 2nd gen. (3)
    • ATMOS Tweeter N/A
    • ATMOS Driver N/A
    • Active Woofer (# per system) 8" (1)
    • Bass radiator (# per system) 8" (2)
    • Driver/Tweeter Array Sealed Fibonacci “golden ratio” enclosures


    • DSP Intelligent Bass Control Yes
    • Nominal power (1% THD, 5 sec.) 300w
    • Operating Class Class D w/DSP
    • Controls Level
    • Inputs Low level, speaker level
    • Binding Posts 5-Way Gold Plated
    • Front LED Logo Yes


    • Tweeter High Pass 2nd Order
    • Tweeter Crossover Frequency 2.5kHz
    • Driver High Pass Electrical 2nd Order
    • Driver High Pass Acoustic suspension 1st Order
    • Driver Crossover Frequency 145Hz
    • Subwoofer Low Pass 3rd Order
    • Mylar Capacitors Yes
    • Air Core inductors Yes


    • Monocoque Construction Yes
    • Low Diffraction MDF Enclosure Yes
    • Wall Thickness 3/4in with 1in top and bottom
    • Built In ATMOS Ready Dock Yes
    • Aerofram die cast aluminum stabilizer base with top adjustable spikes/padded feet Yes
    • Anodized Aluminum Top Cap Yes
    • Die-Cast aluminum end caps N/A


    • Recommended Amplification (wpc) 20-300w
    • Impedance Compatible with 8 ohm outputs
    • Frequency Response 22Hz-40kHz
    • Sensitivity 92dB

    Built in Elevation Module             

    • Not Included Use with A90 Module


    • Height (inches) 39
    • Width (inches) 6
    • Depth (inches) 13
    • Base Footprint (inches) 11x13