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Definitive Technology BP-8080ST

Bipolar floor-standing speaker with built-in powered subwoofer

21 Reviews | 4 questions - 15 answers

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Item # 735BP8080

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Our take on the Definitive Technology BP-8080ST

Here's how it works: direct sound from the front two midrange drivers and tweeter arrives at your ears first, to provide clear, focused imaging. That's followed by sound from the rear mid and tweeter, which is slightly delayed, to enhance spaciousness. The combination creates a lush, seamless soundstage that's more like the way we hear sounds in real life. And thanks to Definitive's Balanced Double Surround System (BDSS) drivers, your music and surround effects will sound incredibly clear, allowing you to pinpoint the soloist in a band or the direction of a jaguar's call in the jungle.

Towering sound for movies and music

Don't just watch your favorite movies, live them with the BP-8080ST, the flagship speaker in Definitive's Bipolar SuperTowerT line. This innovative speaker uses a unique driver design with both front- and rear-firing speaker arrays to surround you with rich, lifelike sound. A potent powered subwoofer built into the bottom of the cabinet delivers intense bass. Even in large rooms, you'll experience a huge, three-dimensional soundstage that pulls you into your music concerts and movies as if you were there. Plus, this speaker has attractive high-gloss black top and bottom caps with a cloth grille-wrapped enclosure, making it a sophisticated addition to your home theater setup.

Bipolar speaker technology brings your favorite recordings to life

sound waves

Front and rear speaker arrays work together to create enveloping sound.

Here's how it works: direct sound from the front two midrange drivers and tweeter arrives at your ears first, to provide clear, focused imaging. That's followed by sound from the rear mid and tweeter, which is slightly delayed, to enhance spaciousness. The combination creates a lush, seamless soundstage that's more like the way we hear sounds in real life. And thanks to Definitive's Balanced Double Surround System (BDSS) drivers, your music and surround effects will sound incredibly clear, allowing you to pinpoint the soloist in a band or the direction of a jaguar's call in the jungle.

Cutaway view

Cutaway view of the BP-8080ST's drivers

Powerful bass built right into the cabinet

At the base of the speaker is a 12" side-firing subwoofer coupled to two passive radiators. This trio creates a total surface area greater than that of a traditional 18" woofer, but with better bass control, speed, and detail than a single huge woofer could achieve. A built-in 455-watt amplifier powers the subwoofer, delivering hard-hitting bass that eliminates the need for an external sub. And because a subwoofer is built into the cabinet, bass output is already perfectly blended with the mids and the highs. All you have to do is set the bass volume to match your room and taste, then sit back and enjoy your music and movie soundtracks.

Build a complete Definitive Bipolar home theater system using perfectly matched centers (see the CS-8040HD, CS-8060HD, and CS-8080HD) and bipolar surrounds (see the SR-8040BP and SR-8080BP).

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Did you know?
Your new speakers will probably sound better after several weeks of use than they do right out of the box. That's because the material surrounding the woofers will loosen up, allowing the drivers to move more fully. Definitive Technology estimates a break-in period of 24 to 48 hours of playback before the speakers will deliver optimum sound quality. For more information and helpful tips, check out this article from Definitive's website about conditioning your speakers.

Product Highlights:

  • Forward Focused Bipolar Array™ technology for lifelike imaging and pinpoint localization
  • Balanced Dual Surround System (BDSS) driver technology places rubber surrounds on both the outer and inner edges of each speaker cone for improved clarity
  • frequency response 18-30,000 Hz (±3 dB)
  • sensitivity 92 dB
  • 8-ohm impedance
  • handles up to 400 watts
  • front array: dual 5-1/4" mids and 1" pure aluminum dome tweeter
  • rear array: 5-1/4" mid and 1" pure aluminum dome tweeter
  • 12" woofer with dual 12" passive radiators
  • built-in 455-watt subwoofer amp
  • one set of 5-way binding posts
  • high-gloss black finish on top and bottom caps with cloth grille-wrapped enclosure
  • 12-1/8"W x 48-1/4"H x 16-9/16"D (with included stabilizer feet)
  • warranty: 5 years woofers, 3 years subwoofer amp
  • Our 60-day money-back guarantee

What's in the Box:

  • One tower loudspeaker (with black cloth covering and glossy black top cap installed)
  • 7' AC power cord (IEC 2-prong type)
  • 4 Black stabilizer feet
  • 8 Self-tapping screws (length=1.375")
  • 4 Threaded carpet spikes
  • 4 Threaded rubber floor glides
  • Owner's Manual
  • Feature booklet
  • Registration card

Featured Video:

These speakers deliver a superior sound stage and real life bass sound. I paired them with my peach tree nova amp and they deliver a full range of sound even when the source is an MP3 or XM radio stream.

Keith L, Summit, NJ


Definitive Technology BP-8080ST Reviews

Average Customer Review(s):

(21 Reviews)

Kick butt!!

Robert from St louis on 4/11/2016

Crutchfield Customer Review (What's this?)

These monsters completed my bipolar 8080 set in my living room. I also have a dig unitive super cube in addition. So needless to say that besides the knocking the pictures off the walls I was tickled to death that even the neighbor stopped by to complain that it was to loud :). I think that is enough said

Pros: Everything

Cons: None

BP 8080 speakers

Keith L from Summit, NJ on 4/8/2016

Crutchfield Customer Review (What's this?)

These speakers deliver a superior sound stage and real life bass sound. I paired them with my peach tree nova amp and they deliver a full range of sound even when the source is an MP3 or XM radio stream.

Pros: Range of sound, high, mid and low and real life presence.

Cons: The only con is the size, but you need that to get the sound; the wife factor.

Full Spectrum of Music Coverage, Less Space Invasive

Frank W from Fairfield, CT on 4/3/2016

Crutchfield Customer Review (What's this?)

While I'm still breaking the speakers in, and have not pushed them to high volumes, the have excellent range and strong imaging. I'm finding the subs required some adjusting as they can be quite loud, with more bass than I will ever need. I've now found the right sub woofer levels for the room they are in, and they are easy to adjust. Highs and Mids are distinct and full. I'm enjoying hearing details in the music that I'd not heard before. From Mozart to Motown to Miles Davis, these speakers cover it all very well.

Pros: Strong top to bottom range and presence, without having to look at enormous wide blocks in my living room.

Cons: None at this time.


Bob from Bismarck, ND on 3/23/2016

Crutchfield Customer Review (What's this?)

Great sounding speaker, These speakers have great bass and midrange and highs that fill the room and when you push the BP-8080ST they even sound better. They also have a great feature in the adjustable bass I am pushing them with an Adcom power amp. Crutchfield did a great job on figuring out what speakers would be the best for me.

Pros: All about that bass

Cons: None

Definitive Technology BP-8080ST

S7V7N from colorado springs, CO on 3/23/2016

Crutchfield Customer Review (What's this?)

These will blow you away!. Combined mine with 8080 & 8040 surrounds for 7.1.4 but that's really overkill unless your room is really large. The 8080 sounds full & the bi-polar design is perfect for HT, but will also really deliver some subtle direct notes. I highly recommend fine tuning your system for best results. Positioned mine 3' from wall. I supplement with a Trinity sub, but the BP Towers can also suffice if you run separate LFE . Nice look & the price is excellent.

Pros: Bi-Polar, Design, Price

Cons: Size

BP-8080 tower speakers

speedyr7 from Ohio on 1/18/2016

Crutchfield Customer Review (What's this?)

Wow. That about sums it up. These speakers produce incredible clear sound throughout from the highs to the lows. I just switched from the Polk Audio RT-3000P towers to these and don't get me wrong the Polk Audios are still good but these take less room and put out incredible sound. Whenever you spend big money on a tower speaker you get that fear factor whether you're getting the bang for the buck and these speakers did nothing but deliver. All the other reviews I read on these were very helpful so I figured I would just follow up with mine. Can not go wrong with Definitive Technology BP8080ST speakers.

Pros: slim design, incredible clear sound, easy installation

Cons: Haven't found any yet

Awesum Purchase

Bobby H from Windsor Mill, Maryland on 1/5/2016

Crutchfield Customer Review (What's this?)

I have had a set of the BP8040's for years, I've always wanted the 8080's. These speakers shook my whole basement. The sound was the best that I have ever heard. They are driven buy a Pioneer 170w per channel receiver. I will never let these go. I even bought the BP8080CS center channel with the built in subwoofer Great Item to add to your system.

Pros: Great response, both highs and lows.

Cons: Not a thing wrong with these speakers.

Just Amazing

Sohal from Ohio on 12/21/2015

Crutchfield Customer Review (What's this?)

Just an amazing speaker. Awesome sound for music and movies as well. I've compared these Def Tech to ones two times the price with these coming out on top. Always a fan of Def Tech. You will not be disappointed b

Pros: Bipolar gives you an incredible soundstage. An openness with detail

Cons: None that I can find at this time.

Def Tech BP 8080-ST

SteveB from Lexington, KY on 12/14/2015

Crutchfield Customer Review (What's this?)

The Definitive Technology BP8080-ST are stunning speakers. It's an amazing all around performer for both music and movies. For music and movies I've crossed them over at 100mhz to tighten and quicken the bass. I love a quick brutal thump and these will absolutely and literally rattle the house when cranked up. For THX movies I've placed a Def Tech 15in subwoofer in the back of the room and crossed it over at 60mhz to minimize the location. I've adjusted the sub volume to blend from front to back allowing for an immersive experience. I've had satellites w/subs for years and have never been pleased listening to music, there was never a good blend of thumping bass and clear highs. The 8080 give me a solid musical listening experience at a fraction of the cost compared to Martin Logan, Magnepan and B&W. The 8080 can be run full range, but I prefer the quicker bass kick with cleaner mid bass notes, thus the 100 crossover. I've had the pleasure to have listened to the best speakers money can buy for over forty years and the 8080 are the best "overall" performers I've had the pleasure to listen to. When they went on sale I pulled out the card and bought them immediately! I'm pushing them with an Integra 30.3 receiver w/100wts. Since the bass is internally powered, the receiver doesn't struggle at all on explosive music and movies. If you're like me and love to feel tight crisp bass and crystal clear highs then ya better pony up and grab a pair!

Pros: House rattling bass. Immersive Bipolar mids and highs. An XD Theater experience in your own home!

Cons: Worrying if I'm bothering the next door neighbors with the bass thump.

Definitive Technology BP-8080ST

Anonymous from New Jersey on 12/22/2014

Crutchfield Customer Review (What's this?)

Always love Definitive Technology!




dj1990 from Cordova, TN on 5/23/2014

Crutchfield Customer Review (What's this?)

Ordered pair of 8080ST's with matching 8080 center and surrounds and an Onkyo TX-NR929 and Oppo 105. I'm thoroughly enjoying listening to these speakers. Room size is 15' W x 18' L. Stereo imaging is everything i'd hoped it would be. As others have said, although bass is substantial, it's not overwhelming, vocals can be clearly heard when listening to music in 2 channel stereo. Movie sound effects are great, nice having two built in subs.




Josh from Michigan on 11/16/2013

Crutchfield Customer Review (What's this?)

I had a very high expectation for these speakers given the glowing reviews on this site. Needless to say, I wasn't disappointed. I can't help but smile every time I turn them on. I purchased these 8080ST towers along with a center channel and a pair of surrounds. The basic two channel music performance creates a sound stage that is truly impressive. I have them positioned roughly 12 inches from the back wall and approximately 15 feet from each other. As the product description states they truly wrap you in sound. The base is incredible. It's deep, full, and tight. It is not muddy or boomy and blends very well the mids and highs. It did take me a little time dial in the base level for my listening environment. Home theater applications are even better. It brings a whole new level of enjoyment to movies you have seen multiple times. Sounds present with a crispness and warmth like never before. I find myself turning my head looking for the sudden explosion or being wrapped into the scene now that I hear sounds from the surround speakers I never heard before. Whether or not speakers need a break-in period has been debated but I know that after 10 days of daily use, I feel that they sound smoother and better blended than when I first hooked them up.




JasonL from saint Louis on 7/13/2013

Crutchfield Customer Review (What's this?)

Great tower I love the way these bump been very happy with them for the last 6 months

Pros: sound

Cons: none

More than I expected!

Plainscraps from Atlanta on 5/25/2013

I purchased these before the holidays of 2012 to "stand in" for my Magnepan speakers that were being factory refurbished. I simply wanted a fairly accurate speaker to listen to my 2 channel music while Magnepan's were getting a facelift. I bought these on a whim (not auditioned) and at the recommendation of an unknown sales associate who had no idea who I was ultimately going to purchase them from. Well, I never buy middle priced equipment without an audition. Only used. These were purchsed at an amazing price that included (2) surround dipoles and a center channel to go with them. I must say, when I first hooked them up and turned them on, I was just short of astonished. I was expecting a pair of speakers that would suit my needs for a month or so, when in all actuality, I would be honored to keep them as my primary 2 channel or my fronts in a 5.1 environment. They sound that good. As others have indicated, the bass is substantial, yet containable. The mids are wonderful as is the treble. Never harsh. I run all of my music with no tone loops enabled as not to color my music. Only the Maggies (and these) so far can provide that level of comfortable listening for me. I have used these with the following 2 channel equipment. A Classe' preamp, a NAD preamp, a Music Hall and Denon turntables. A Oppo Blu-Ray player with audioquest cablling. Amplification by 5 monoblock Outlaw amplifiers. In the 'round I use a Marantz processor. Buy them! Period!

Pros: Accuracte, non- colored speakers. Very fluid. Verrry easy on the ears. Very attractive.

Cons: None that I can think of.

Good Speakers

Steve from Suwannee, Fl on 5/21/2013

Crutchfield Customer Review (What's this?)

Very accurate speakers. The subs are smooth, with no boominess. They seem to translate very well. Still breaking in, so I expect they will only get better.



Absolutely Amazing Speakers

fbella from SF Bay Area on 9/30/2012

Crutchfield Customer Review (What's this?)

I'd waited nearly 30 years to get to the point where I could finally afford the HT system of my dreams - and have a room to place it in. That time arrived and I shopped carefully and listened to a lot of speakers. I'm an audio/video engineer by trade - so I knew the sound I wanted to have. My search narrowed in on Paradigm Studio 100's and their Studio series sub's. I loved the sound but the system was above my price max. I thought the best alternative where the Golden Ear Tritons - which sounded great next to the Paradigm's. Then I heard the Def Tech BP6060's in a Magnolia Store and fell in love. The 8080's were no where to be heard, so I trusted that they would sound the same as the 6060's but fill my bigger room better. I knew they would have plenty of bottom end - but I wanted the assurance of lows measured on the Richter scale - so I combined the 8080's with Paradigm's Studio 12 sub. I added the SR-8080 surrounds and matching center. I like all kinds of music - but classic and progressive rock are my favs. Live concert Blu-Ray's on this system are beyond belief - better then being there! At all power levels, the sonic quality and sound stage are beyond description. I placed the 8080's about 10 inches from the front walls and the rear firing reflected sound delivers a rich and live soundtage that not even the Paradigm Studio 100's could deliver. A well mixed 5.1 DTS HD live mixed concert - like Toto's "Falling In Between" are breathtaking! No regrets - buy them

Pros: Not enough starts to give! Impeccable sonic quality at all levels, quality construction, tremendous sound stage with reflected rear firing drivers, incredible bass without a sub if desired, good value - no need to spend more on "boutique" speakers

Cons: There - simply are none - this, in my mind, is a perfect system

Audio Extacy!!!

Todd R. from Senoia, GA on 3/8/2012

Crutchfield Customer Review (What's this?)

Can I have more stars to give please? I labeled this review Audio Extacy and I couldn't be any more accurate. I have been an audiophile since I was blowing up the speakers on my brothers stereo at 5 years old. I heard Definitive Technlogy first Super Towers 17 years ago, and was just waiting until I could pull the trigger on my own set. I finally have them and they bring tears to my eyes with how pure they are. These beasts are Sonic Perfection if I can copy another reviewer, there is no better description. At low volumes they are perfectly clear, I hear parts of my music I have never heard before. At high volumes100-110+ db (I have childrens hearing I have to protect) they are STILL perfectly accurate. I tell my wife every week how much I love this system. Music and movies are all handled with ease. I can't imagine having to spend $10K a speaker to beat these. If you can't decide if you should spend this kind of money ,if you consider yourself an audiophile on a budget and need music as much as you need air to live, drop the money and let these speakers enrichen you life more than the $3,000 ever could in any other way. If you want the perfect system buy the 8080 Center and Surrounds and be absorbed by your new found nirvana. Don't buy them anywhere else, the BEST customer support is ONLY at CRUTCHFIELD.

Pros: Attractive design, musical purity. Soaring highs, perfectly matched midrange, and concrete cracking bass if you want. They take everything you can throw at them and just play and stir your soul doing it.

Cons: Heavy, but worth every pound for what they're capable of. Don't disappear in a room, but with the right entertainment system they compliment the decor and you can admire the visual.

Great speakers

CN from Bklyn, NY on 1/16/2012

Crutchfield Customer Review (What's this?)

These are great speakers, can handle almost anything you throw at them. Got the whole 8080 setup with free satellites. They have amazing clarity and the bass is overwhelming. I'm Running them at about 20% and the neighbors are probably not happy. Definitely no need for sub.

Pros: Sound quality. Took a while to break in though. Bass / radiators. Solid heavy built. Cat proof so far (I have three). Can change the sleeve easily if necessary. I'm not much of an audiophile but a friend that owns M0n!tor Audio Bronze said these are much better

Cons: Setup with Audigy can get complicated/inaccurate. Still not sure if and how I should hook-up the LFE. You have to run power cables for all three front speakers. Had to buy new ones as these are short (standard computer power cable). You need good room setup with a nice empty wall and plenty of room to put them in proper position to enjoy the bipolar soundstage Worth every bit of hassle though.

best ever 40th birthday gift

koa from honolulu hi. on 9/4/2011

my home theatre system from definitive shakes my house and drives my neighbors crazy thats the best birthday gift i ever had in a long time ALOHA!!!




Mike F from Hartford, CT on 2/14/2011

Crutchfield Customer Review (What's this?)

Simply Outstanding! These are the best sounding speakers I have ever heard at any price. They will shake your house to the foundation!



The finest Speakers I've ever heard

Rome from Houston, TX on 2/2/2011

Delicate highs. Dead accurate midrange. Deep, powerful & effortless bass. Simply stated, these are the finest speakers that have ever graced my living room. I have finally achieved sonic perfection. Most quality speakers perform well with movies or music but the BP-8080STs are equally adept at both. I have a very high quality pair of stand mounted monitors with European drivers. These speakers have received very favorable reviews. I thought if the Def Techs can produce 95% of the sound of my XLs but perform great with movies then, I'd be satisfied. I'm here to tell you that satisfied is not a good enough word to describe the beautiful, cohesive, all of a whole sound that the BP-8080s produce. They bring the performance 5th row center. You are magically transported to the venue. Be it intimate jazz club, Concert hall or even below deck in a creaky wooden war ship. The built-in subs obviate the need for separate powered subwoofers. This makes the speakers very easy to drive with modestly powered receivers but feed these babies plenty of clean power from a separate amp and they simply transform! I find myself punching out at exactly 5:00pm and rushing home so that I can spend my evenings rediscovering my music collection. I can't recommend them any more highly. If you have the means, then, by all means, Get Them!




Hands-on research

Features and Specs

Enclosure Passive Radiator
Finish Cloth-covered MDF
Color Black
Tweeter Dome
Tweeter Size (inches) 1
Midrange Size (inches) 5.25
Woofer Size (inches) 12
Woofer Composition Polymer composite
Woofer Surround Rubber
Built-in Powered Sub Yes
Video-Shielded Yes
Connector Type 5-way post
Bi-amp Inputs No
Parts Warranty 5 Years
Labor Warranty 5 Years
Power Range 20-400
Frequency Response 18-30k Hz
Sensitivity 92 dB
Impedance (Ohms) 8
Amplifier Power 455
Height (inches) 48-1/4
Width (inches) 12-1/8
Depth (inches) 16-9/16
Weight 66 lbs

Product Research

Speaker Features

Speaker Features

Bipolar Design: The Definitive Technology BP-8080ST is a 3rd generation "SuperTower." This bipolar speaker contains drivers on the front and rear of the cabinet. The BP-8080ST uses a new patent-pending design called Forward Focused Bipolar Array. By radiating sound both forward and rearward, the speaker produces sound as it is in real life, with improved pinpoint localization of soloists, greater placement flexibility, and superior intelligibility.

Non-Resonant Tapered Cabinet: The BP-8080ST features a highly-engineered inert and resonance-free heavy MDF (medium-density fiberboard) cabinet to prevent coloring the sound. The front of the enclosure is tapered to make it appear slimmer. Wherever a driver is attached to the cabinet, a second layer of MDF is attached to prevent the drivers from causing vibration to the rest of the enclosure. The sealed midrange enclosures serve as braces for the side walls, while MDF cross braces near the woofer further stiffen the cabinet. The entire enclosure is wrapped in a cloth "grille sock", while the high-gloss polymer composite end-cap and bottom panel add a touch of elegance.

High-Definition Drivers: The BP-8080ST utilizes two cast-basket 5-1/4" high-definition polymer composite midrange drivers surrounding a 1" annealed Pure Aluminum dome tweeter in a D'Appolito front array. On the rear, there is a single identical 5-1/4" driver and the same 1" aluminum dome tweeter as used in the front array. The front and rear arrays are housed in separately sealed MDF enclosures to isolate the midranges from the influence of the subwoofer. The drivers feature Definitive Technology's patented 2nd-generation Balanced Double Surround System (BDSS) that supports the speaker cone at both the inner and outer edges, allowing longer, more linear excursion over a wider area. A new patent-pending Linear Response Waveguide smoothes off-axis frequency response and disperses sound over a wider area.

Built-in Powered Subwoofer: The BP-8080ST is equipped with a long-excursion, side-firing 12" subwoofer, driven by a 455-watt Class D amplifier with an integrated Digital Signal Processor. The subwoofer is pressure-coupled with two 12" Low Bass Radiators. The combination of the active subwoofer and two bass radiators gives you 33% more surface area than a single 18" woofer, but with better control, speed, and detail. The benefits of a built-in subwoofer include:

  • Eliminates the need for a separate subwoofer that takes up additional floor space.
  • More bass output from two subwoofers, compared to one.
  • Two subwoofers reduce standing wave room resonances and dead zones for more evenly distributed bass.
  • The subwoofers are perfectly integrated and blended with the mids and highs, eliminating the crossover and phase controls of a separate subwoofer.

Subwoofer Volume: The level of the subwoofer (relative to the other drivers) can be adjusted using the rotary dial on the back panel of the speaker. Once the bass level is set, the overall volume of the speaker system can be controlled by the receiver/amplifier.

Auto Power: The BP-8080ST has a special circuit that automatically turns on the amplifier when a signal is fed to the speaker. The LED on the back panel will glow when a signal is sensed and the amplifier turns on. After the signal ceases, it may take up to an hour for the amplifier to turn off. When first powering up after being unplugged, the LED will flash for about 30 seconds while the firmware is loading.

Stabilizer Feet: The speaker comes with four stabilizer feet which attach to the bottom of the cabinet, two per side, with the supplied self-tapping screws. Each foot has a threaded insert to allow you to screw in the supplied carpet spikes or smooth floor glides, depending upon the type of floor they're being placed upon. Four additional threaded inserts are provided on the bottom panel in case you decide not to use the stabilizer feet. The spikes and glides add approximately 1" to the overall height of the speaker.

Placement: The BP-8080ST Bipolar speakers have a lot of flexibility when it comes to placement and positioning. It is recommended that the speakers be placed at least 4" from a back wall, and at least 6" from a side wall. When used as left and right main speakers, you should set up the speakers and the listening position in an equilateral triangle, with the speaker cabinets turned slightly inward.


Binding Posts: The BP-8080ST is equipped with a pair of gold-plated, 5-way binding posts on the back of the cabinet to attach your receiver's speaker wire. The terminals will accept bare wire, pin connectors, spade lugs, single and dual banana plugs. Recommended amplifier power: 20 to 400 watts RMS.

LFE Input: For the powered subwoofer, the BP-8080ST has a single RCA LFE (low-frequency effects) input. Since you'll be using two speakers, you will need a Y-adapter to split the LFE output from your receiver to each subwoofer.

Wiring Options/Speaker Setup: You can connect the BP-8080ST in one of two ways, with or without the LFE connection. If you use only speaker wire, you should set the speaker setup on the receiver to "Large" and Sub to "No." If you connect the speaker with speaker wire and the LFE, the speaker setup should be "Large" and "Yes."

Note: It is recommended that you do not use the receiver's auto setup function, as it is often ineffective in setting up and adjusting speakers with built-in subwoofers.

AC Power: The speaker has an AC power input (IEC 2-prong type) on the back panel for plugging in the powered subwoofer. A 7' AC power cord is included.


  • Width:
    • 7" enclosure only
    • 12.125" with stabilizer feet
  • Height:
    • 48.25" enclosure only
    • 49.25" with carpet spikes or floor glides
  • Depth: 16.5625" including binding posts
  • Weight: 66 pounds

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I wanted a speaker with a good deep bass and great mids and highs. [ Robert  Mar 09, 2016 ]
Tons of research lead me to these. We'll see when they get here. [ David  Jan 19, 2016 ]
A good combination of performance, price and value! Also a great sale price! [ King  Dec 15, 2015 ]
Upgrade from Bp-8020st. I will use my 8020's for rear surround. [ Amir  Dec 13, 2015 ]

4 questions already asked

YES, you can [ Charles  Mar 18, 2017 ]
I am not the ultimate answer guy but if you have atmos the your effect might be better if you strategically please in ceiling difinitive 8inch speaker in the ceiling it self. Just a suggestion. Coming off the the tower speaker heads might not give you he difference that you might b looking for. The tower already has a rear shooting speaker that softens the sound. In cieling you can really put the sound where you want instead of shooting straight up in the air. Hope this helps [ Robert  Mar 18, 2017 ]
Hey Jason. I have the 8080s myself. I found that the 8000 series are about 1" wider and 3" longer than the A90s. Additionally, the A90s were made with a physical connection that is a direct fit to the top of the 9000 series. With some time and creative woodwork a nice looking transition baseplate could be built for the aesthetics part. Since there is a built in plug that connects these to the 9000s I can't speak to the sound signal part. I don't know how the sound signal actually gets to the A90s through the 9000s. Separate channel wire routed through 9000 from AVR? Signal processed inside the 9000s? Probably have to go to DefTech for that info before I would buy them for my 8080s. R/John [ John  Mar 17, 2017 ]
I sure that can't connect A90 to BP-8080st. But just to make sure please chat or call with the Crutchfield expert. They are amazing in providing details. [ Kirit  Mar 17, 2017 ]
Yes you can. Made to sit right on top [ Christopher  Mar 17, 2017 ]
Mine are set in corners of the room set at 45 degree angles to adjacent walls and approximately 30ft. apart. With this set up the imaging seems OK. [ Richard  Feb 09, 2016 ]
I'm sorry but because of the un-ideal configuration of my set up, I knew i was giving up "holographic" imaging from the start. There is a large cabinet between my speakers and they really aren't far enough from the back wall. I don't know if the components mentioned have any delay setting for dolby sound or such but if they do I would check those settings. Also dipole speakers are very sensitive to placement so, if possible, keep experimenting with that. Every speaker has tradeoffs and the strengths of the Definitives fit what I was looking for. But I Really understand how pinpoint location in imaging is important to some critical listeners. Sorry I can't be of more help. [ King  Feb 09, 2016 ]
Get a Y connecter. Male to 2 female. [ Charles  Feb 06, 2016 ]
The back Chanel's are assignable so you can run 2 sets of speakers at the same time for music listening. Look thru your manual to see how to reassign them. I have a Marantz 9.1 so far only use it for music. I have the 8080STs and Bose 701s sounds good. The 8080s are Soooo much better than the Bose. My room acoustics suck though, Tile floors and 11.5 ft ceilings. [ JOEL  Dec 11, 2015 ]
Hey Sophol T; I own a pair of these guys and if I didn't have tow sub-outs I'd pick up a quality RCA splitter since Deftechs have built in lamps you fusty need to feed the signal and they do the rest. You could also just feed one for now since the subs in these are that good. [ John  Dec 11, 2015 ]
I have mine connected to a Maranz power amp that had two sub outputs; however, you can connect the Deftecs to the right and left stereo outputs on your Yamaha and let the Deftecs sort out the sub woofer frequencies. [ ART  Dec 11, 2015 ]
Get a rca 1 into 2 splitter. Run cord to each speaker. Works great [ bryan  Dec 11, 2015 ]
Hi, I am using Emotiva XPA-2, 300 watts x 2 per channel and a Emotiva XSP-1 Difference Reference preamp with home theater bypass into a Marantz AV7701 and a Emotiva XPA-5 200 watts x 5 channels for home theater.Amplifier and Peramp is the best way to go,Nad make a very good amp and peramp you do not need all the power I have the speakers will sound great with less,you have powered subwoofer built into the speaker that will deliver excellent bass. [ MICHAEL  Dec 12, 2013 ]
I have the Def Tech 8080 speakers in a 7.3 surround mode. I say 7.3 since theres 3 subs between the center and both towers. Theres alot of good receivers out there, figure your budget out and then narrow down your choices. I looked, researched, read reviews and finally decided on a the Pioneer Elite SC-79 flagship receiver since it has dual sub outs I just pigtailed one of the sub outs to accommodate the three subs. I figured these are some serious speakers with some serious power so for my budget, I went all out, IMO on the receiver. The receiver is sexy, heavy, has performed great and is capable of running 9 channels so I ran a pair of speakers to the patio and its very nice being able to split the source for the patio speakers. The sound is great! The receiver is a beast and so are these speakers, movies and music and the Xbox1 all sound great and with a Harmony remote, switching sources is a breeze! I spent around 15k on my setup, 3k of that was the receiver, so imo, decide what youre willing to spend, then research the receivers in that price range, i bet youll be happy with whichever receiver you decide on, +1 for the Pioneer Elite SC-79! Hope this helps. [ JASON S  Dec 12, 2013 ]
I can't recommend any specific setup. I have an NAD 40W per channel, 5 channel receiver. I also have a DT center channel with a powered sub. My rig is superb. There is more than enough power, and the DT speakers are as clear as any that I have owned. All of my music and movies are stored on an Apple Mac. I also have an 8 terrabite Drobo server. I use an Apple IPad to access, sort, and playback. It all works very well, and I am very happy with it. I would suggest a higher quality amp/preamp, etc as these speakers are very revealing. I would imagine a budget priced front end would not be adequate. The NAD has a great midrange and flat response across the audio spectrum. I require absolutely no EQ massage to enjoy my music.....from Pink Floyd to Appalachian strings.....vocals are amazingly good. Good Luck [ STEVE  Dec 12, 2013 ]