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Definitive Technology BP8040ST Floorstanding loudspeaker (Pair)



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In Stock
Product ID :
24 - 48 Hours

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Product Description

  • Bipolar technology (speakers on front and back of enclosure) for huge room-filling sound for every listener in the room
  • Built-in 300 Watt powered subwoofers deliver massive bass, eliminates need for separate subwoofer
  • Second generation BDSS high-definition drivers for life-like tonal balance, superb intelligibility and broad dispersion
  • Slim enclosure takes up minimal floor space (.86 sq. ft.)

A Legend Reborn
Definitive Technology's first product in 1990 was a bipolar tower loudspeaker. The BP10 was the first step in building the company that stands 20 years later as the best selling and most honored brand of audiophile-grade loudspeakers in the USA. Later Definitive pioneered the concept of "powered towers" by incorporating powered subwoofers into Bipolar floor-standing speakers and dubbed them "SuperTowers." The BP-8040ST is a third generation BP SuperTower and makes use of our most advanced technologies, including a new patent-pending approach to bipolar speaker design called Forward Focused Bipolar Array, Digital Signal Processing amplifier and our patented BDSS driver technology. The BP-8040ST SuperTower is the crowning achievement of over 20 years of research and development to create the perfect balance of style, convenience, and most of all performance in a floor-standing loudspeaker.

The Most Advanced Technologies for the Most Advanced Performance
If you love great sound you must experience Definitive's BP-8040ST Bipolar SuperTower. Its combination of Forward Focused Bipolar Array™ technology (for rich life-like, room-filling, three-dimensional sound), built-in SuperCube® technology powered subwoofers (for lightning-fast, earthshaking bass), and our latest generation patented Balanced Double Surround System (BDSS) midrange drivers, all housed in a rock-solid attractive enclosure, delivers unsurpassed sonic performance.








Bipolar technology creates a huge, three-dimensional soundstage

for every listener in the room

Bipolar Technology Brings Performances to Life in Your Home

Many experts and in-the-know listeners agree that bipolar speakers are superior for both music and home theater. With bipolar speaker technology each speaker incorporates two sets of drivers, one facing forward and the other facing to the rear so that the speakers radiate sound both forward and rearward exactly as sound is produced in real life. Forward Focused Bipolar Array™ technology is Definitive's patent-pending improvement to our original Bipolar designs. This new ground-breaking technology combines the huge life-like imaging benefits of bipolar design with improved pinpoint localization of soloists, greater placement flexibility, and superior intelligibility.

The sonic benefits you hear are dramatic! This unique technology provides you with a lifelike balance of early-arrival sound from the front facing drivers, which provides focus, clarity and location data, and reflected delayed sound from the rear drivers which conveys the lush three-dimensional soundstage of a live music or cinematic performance. This combination creates a huge soundfield which is rich, warm, ultra clear and vibrantly alive for every listener in your room. Most importantly, Definitive's bipolar speakers make the walls of your room seem to disappear transporting you into the sound space of the recoded event. They will literally bring your music and movies to life in your home. One listen and you can never go back to conventional speakers again!

The Subwoofer System Will Rock Your World 
Each BP-8040ST combines a built-in 8" subwoofer driven by a 300-Watt class D amplifier and two pressure-coupled 8" (20cm) Low Bass radiators for over 30% more surface area than a single 12" woofer but with better control, speed and detail than a single big woofer could ever deliver. The built-in powered subwoofers achieve dramatically better blending, integration and timbre accuracy than could ever be achieved with separate subs.

The brawny 300 Watt Class D amplifier features an integrated Digital Signal Processor (DSP, in essence a mini computer) that equalizes the woofer system to extend and smooth the bass response, provides a phase coherent crossover to perfectly blend the subwoofer system with the midrange arrays for seamless high performance. Digital protection systems tightly monitor and control the woofer system to prevent distortion and woofer damage at ultra-high volume levels. The bottom line is the BP-8040ST's bass will rock your world like no other speaker anywhere near its price and size.

Why Built-In Powered Subwoofers Are Better Than Separate Subs 
Besides eliminating the need for a floor space-hogging separate subwoofer, integrated subs offer dramatic performance benefits. First is the obvious benefit that you'll have two subwoofers in the room instead of just one for simply more bass output. Second, two subwoofers in the room reduce "standing wave" room resonances that create bass dead zones in the room. With two ST-8040STs you'll enjoy high impact bass throughout the room.

Most importantly the subwoofers are perfectly integrated with the mid/high section. Audiophiles often spend hours moving and adjusting their subwoofers' crossover and phase controls in pursuit of perfect subwoofer to main speaker "blending." With the BP-8040ST you won't have to go through that kind of hassle to get great sound. Definitive's engineers have perfectly adjusted the crossover and phase to achieve seamless blending and life-like sound. All you have to do is set the bass volume to match your room and taste then sit back and enjoy great sound.

Driver Complement

Diameter 1" (2.54cm) 
Type Pure Aluminum Dome 
Diameter 3 1/2" (8.89cm) 
Type BDSS 2nd Generation 
Tweeter/Mid Array
Type Bipolar Configuration 
Front Firing Array D'Appolito 
Diameter 8" (20.32cm) 
Type Active Subwoofer Driver 
Bass Radiator
Diameter 8" (20.32cm) 
Type Planar Low Bass Radiator 


Digital Signal Processing
56 bit DSP Auto Loading 


Audio Inputs
Speaker Level 1 Pair (Speaker Cable)  
LFE (optional) 1 (RCA)  
Maximum Sensitivity
1 watt @ 1 Meter 92 dB
Total Frequency Response
Overall 25 Hz - 30 kHz 
Nominal Impedance
Compatible with 8 ohm
A/V Receiver Crossover Setting Large; Full Bandwidth 
Power Handling 20 - 300 watts per channel


Internal Amplifier
Power 300 watts
Type Class D 
Power Cycle
US Auto On/Off: Signal Sensitive 
International Switched & Auto On/Off: Signal Sensitive  
Power Requirements
US 110 volts A/C 
International 220 volts A/C  
US 3.2 amp 250 volt Slo Blo


Cabinet Dimensions
Height 39" (99.06cm) 
Width 5 5/8" (14.29cm) 
Width with Stabilizer Feet 10 3/4" (27.30cm) 
Depth 11 5/8" (29.53cm) 

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