Definitive Technology SR9040 Bipolar Surround Speaker

Dynamic Bipolar Surround Speaker for Total Sonic Immersion

The SR9040 bipolar surround speaker is your answer for dynamic, immersive, room-filling sound for your home theatre. Thoughtfully engineered to envelop you in thrilling, detailed, high-definition audio.

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Dynamic Bipolar Surround Speaker for Total Sonic Immersion

The SR9040 bipolar surround speaker is your answer for dynamic, immersive, room-filling sound for your home theatre. Thoughtfully engineered to envelop you in thrilling, detailed, high-definition audio.

This product has been discontinued. Shop all Definitive Technology Speakers.
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Immerse Yourself In The Details

The SR9040 features a powerful bipolar speaker array that integrates Aluminum Dome Tweeters and BDSS woofers to deliver ultra-wide dispersion, tremendous dynamic range, and ultra HD detail for the ultimate in total sonic immersion.

Bipolar L/R Array
for an ultra-wide soundstage

The secret to SR9040’s incredible soundstage lies in the ultra-wide speaker dispersion provided by its Bipolar L/R Speaker Array. The SR9040 array incorporates two 3.5” mid/bass woofers and two 1” aluminum dome tweeters, one each facing left and right, and was designed to complement the Forward Focused Bipolar Array found in the BP9000 tower loudspeakers. By simultaneously firing both left and right from your side or rear positions, a naturalistic delay is added to the sound that creates immense, ambient depth in rooms of any size.

Balanced Double Surround System (BDSS™)
for the best seat in the house

On either side of the SR9040’s bipolar L/R speaker array innovative 3.5” Balanced Double Surround System™ drivers designed to always put you in the best seat in the house. BDSS improves driver excursion, allowing the SR9040’s mid/bass drivers to play lower and blend with the built-in subwoofers and bass radiators found in other BP9000 models.

Because this technology is utilised across the entire BP9000 Series, when integrated with other BP9000 models, the SR9040 contributes to a more uniform midrange soundstage throughout your listening environment. That means full range reproduction of scores, ambience and surround sound effects; and a seamless flow of panning audio around the room.

Aluminum Dome Tweeters
for crystal clear highs

The SR9040’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.

Designed for Performance

We leave no stones unturned in engineering superior loudspeaker designs. Resonance-free cabinetry; a disappearing, acoustically transparent grille; and flexible placement options, are more reasons that the SR9040 is an integral investment in your ultimate home theatre sound system.

Anti-Resonant Construction
for clean and powerful sound

The clean, powerful performance of the SR9040 is enhanced by a rigid cabinet design with bracing to improve sound and reduce unwanted resonance.

Disappearing Design
for focus on what matters

The SR9040 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.

Flexibile Configuration
Own the system that’s music to your ears

We understand that your home theatre preferences can be as unique as the spaces where you want to enjoy it. We built the SR9040 with those variables in mind. They can be easily wall or stand mounted and used as side speakers, rear surrounds or for front effects. So whether you’re looking for 5.1, 7.1 or 13.2 Dolby Atmos or DTS:x total immersion, the SR9040 has been designed to fill your life with sound.

Not Just for Home Cinema

The advances that make the BP9000 series the ultimate home cinema speaker system apply to beautiful music reproduction as well. That’s why the SR9040 is also revered for its extraordinary musicality—from the roar of the crowd, to ambient soundscapes, to precisely placed instruments all around you— you’ll hear it all in high resolution, immersive detail when watching concerts or listening to multichannel music.


“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

  • Overall

    Total Pieces 1
    Cabinet Warranty 5 years
    Drivers Warranty 5 years

    Bipolar Surround Speaker

    Total Pieces 1
    Availability US
    Orientation Vertical
    Height 9.5″ (24.13 cm)
    Width 7.81″ (19.84 cm)
    Depth 5.38″ (13.67 cm)
    Materials Aluminum
    Front Array Driver Complement • (2) 1″ (2.54 cm) d (Round) Aluminum Dome – Tweeter
    • (2) 3.5″ (8.89 cm) d (Round) BDSS Bass – Mid/Woofer
    Total Frequency Response 50 Hz → 30,000 Hz
    Nominal Impedance 8 ohms
    Max Sensitivity (1 watt @ 1 meter) 92 dB
    Mounting Type Keyhole Hanger
    Available Orientations Vertical
    A/V Receiver Crossover Settings Small (100 Hz)

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