Definitive Technology BP 2000 Loudspeaker Definitive Technology BP 2000 Loudspeaker Since its inception, Definitive Technology has specialized in bipolar loudspeaker designs. Bipolar speakers typically have duplicate groups of drivers, facing to the front and rear and driven in phase. That con figuration gives nearly omnidirectional response in the horizontal plane, with just a slight reduction in output to the sides at middle and high frequencies. Bipolar speakers, when placed a few feet from the wall behind them, tend to add a quality of spaciousness to the sound, creating a somewhat more realistic soundstage than conventional speaker designs.
In addition, the multiple drivers can handle more power than a standard configuration for a given distortion level (or, conversely, will generate less distortion for a given sound-pressure level). Another potential benefit of the bipolar configuration is a narrower cabinet width, since low frequencies can be handled very effectively by two modestly sized woofers instead of a single larger one. That enables the de signer to use a smaller panel width for a given level of bass performance, minimizing the enclosure 'footprint.'
But in the case of Definitive Technology's latest bipolar speaker, the BP 2000, the most distinctive (albeit virtually invisible) feature is a built-in powered subwoofer. The result is a reason ably compact speaker system with truly prodigious bass extension and out put capability. That is not to say that the BP 2000 is exactly a small speaker - each one measures 50 inches high, 9 inches wide, and 16 inches deep and weighs an impressive 120 pounds - yet it can be used effectively in al most any size room without visually dominating the decor. Styled like most previous Definitive Technology bipolar speakers, the BP 2000 is a slender column covered with a black elastic 'sock' over its full height on the front, sides, and about two-thirds of the rear panel. The top is a piano-finish, black-lacquered wood en plate that is easily removed for pulling down the cloth sock and exposing the drivers. The speaker's base is a similarly finished wooden plate.
The system is also available with cherry endcaps. For a tighter contact with the floor, optional spikes are available. Although the BP 2000 is relatively tall and deep, side placement of the subwoofer driver enables the cabinet to remain as narrow as those of most other Definitive Technology speakers, and it occupies only about a square foot of floor space. If the speakers are slightly angled toward the listening position (for optimum stereo imaging), they are surprisingly inconspicuous. Lifting off the top plate and pulling down the grille sock reveals the driver complement. On the upper half of the front panel is a pair of 6¾-inch cone woofers (their effective cone diameter is about 5½ inches each) vertically flanking a 1-inch aluminum-dome tweeter in the popular D'Appolito configuration.
The tweeter is offset slightly to one side of the panel's vertical midline, which may have been done as much to minimize the spacing between the woofers as for any imaging benefit. The woofers have cast magnesium baskets and compliant rubber surrounds.
Definitive Technology Bp 2000 Tl Specs
The rear panel holds an identical trio of drivers, located directly behind the front array. Definitive Technology says the cabinet interior is divided into separate enclosure volumes that give the front and rear sections slightly different low-frequency cutoff frequencies, apparently to compensate for the closer proximity of the rear drivers to the wall. The rear tweeter is also off set, in the opposite direction from the front tweeter. The lower half of the cabinet is devoted to the subwoofer and its 300 watt amplifier.
The subwoofer itself is a massive 15-inch driver with an actual cone diameter of 13 inches, mounted on the side of the cabinet. Designed as mirror-image pairs, the BP 2000 can be used with the sub woofers facing either outward or inward (the latter is recommended because of the slightly increased coupling between the two subwoofers). Incidentally, when the speaker's top is removed and the cabinet edges exposed, you can see that the side holding the subwoofer is 1¼ inches thick, compared to 1 inch for the front and rear panels and 3/4 inch for the other side.
A knuckle-rap test suggested that the structure is about as rigid as a brick or a cinder block. Although we could not see inside the enclosure, it is evidently strongly braced. The bottom of the cabinet contains the subwoofer amplifier and its associated crossover components. Covering the bottom 15 inches of the rear of the enclosure is a metal panel with input connectors, amplifier heat sinks, a power switch, a line fuse, a sensitivity switch, and knobs for adjusting the bass equalization and level. Price is $3,000 per pair. The BP 2000 offers a variety of connection options.
It has three pairs of five-way binding posts (labeled HIGH, MID, and LOW), which accept single or dual banana plugs, wires, or lugs and are normally connected in parallel by gold-plated metal jumpers. The simplest connection uses only the wires that would normally connect your amplifier or receiver to conventional speakers. You can also bi-wire or tri-wire the speakers, with separate cables to each section, by removing the appropriate jumpers. Yet another possibility is to drive the subwoofer portion of the system from the line-level out puts of a preamplifier equipped with two sets of full-range line outputs (or Y adaptors could be used to turn each of a single set of outputs into two).
Each speaker has a RCA phono-jack input to its subwoofer amplifier that can accept a full-range signal and pass it through the speaker's internal low-pass filter. A twelve-page instruction manual describes the procedure for setting the subwoofer controls.
The criteria for final adjustment are purely subjective, based on when it sounds 'right' to you. In addition to the usual level control, there is a low-frequency equalization control for fine-tuning the balance between the low bass (under 50 Hz) and the upper bass (50 to 100 Hz). The procedure is not complicated, and the instructions point out that (as with separate subwoofers) there is no absolutely 'correct' setting.
You are encouraged to experiment with the settings to discover the one that best suits your own taste. Normally the subwoofers of the two speakers will be set identically, but the manual points out that you can compensate for asymmetrical positioning of the left and right speakers (which could affect their low-bass performance) by using different subwoofer level and equalization settings for them.
Although the speakers have sub woofer power switches, there is no problem in leaving them energized continuously, since they use very little power at idle (we never shut them off during several weeks of use). The heat sinks never became more than faintly warm, even after extended operation at high volume levels. For the most part, we were able to test the BP 2000's as we do all speakers.
The averaged room response of the left and right speakers, based on a swept warble-tone signal, was exceptionally uniform, with several minor ripples of less than 3 dB. That smoothness was verified by an MLS quasi anechoic measurement. Our measurements closely resembled the response curves supplied to us by Definitive Technology, which were made using a totally different procedure and in a very different environment. All the response curves exhibited a series of small ripples, with a peak-to peak amplitude of 3 to 4 dB, across the range from 300 Hz to 20 kHz. Our close-miked measurement of the subwoofer's response agreed exactly with the manufacturer's data, including the effect of its equalizer control. In its middle position, which we used for listening and measurements, the subwoofer response was ±3 dB from 23 to 100 Hz. In the range between 100 and 300 Hz, measurements become somewhat ambiguous, since there is an unavoidable interaction with the room boundaries.
Our composite response curve for the BP 2000, combining the close miked subwoofer response and the room response, had a 6-dB peak-to peak variation between 100 and 200 Hz, which would certainly be different (but probably present to some degree) in any other room, The BP 2000's horizontal dispersion was typical of speakers with drivers of similar size. The output plots on-axis and 45 degrees off-axis remained close up to about 10 kHz, and then the curves diverged by about 5 dB at 13 kHz and 15 dB at 20 kHz.
The system's impedance ranged from 4 ohms between 3 and 20 kHz to 16 ohms at 20 Hz. There were peaks of 14 ohms at 100 Hz and 10 ohms at 1.4 kHz. The speaker's specifications state only that its impedance is compatible with amplifiers designed to drive 4- to 8-ohm loads, which is consistent with our measurements. There was no clear indication of the crossover frequency between the tweeters and midrange drivers in anything we measured or heard, which is actually as it should be. The preliminary specifications for the BP 2000 include a 90-dB sensitivity rating, a bandwidth of 15 Hz to 30 kHz (!), and a recommendation for use with main system amplifiers rated between 30 and 300 watts per channel (which encompasses virtually every high-fidelity amplifier on the market).
We measured the system sensitivity at 1 meter with a 2.83-volt input of noise (equivalent to 1 watt into 8 ohms) as 92 dB sound-pressure level (SPL), slightly higher than rated. That suggests (and we verified) that the BP 2000 can be driven to lease-breaking levels by just about any receiver or amplifier, with a wide margin of re serve power. The main-system drivers had no difficulty handling all the power our test amplifier could muster in single-cycle tone bursts 860 watts at 1 kHz into the woofers and 1,280 watts at 10 kHz into the tweeters. We measured the subwoofer distortion with a steady-state 2.25-volt input to the system (equivalent to a 90-dB SPL system output). The distortion (largely third-harmonic) was, to our surprise, not spectacularly low, ranging from 6 percent at 30 Hz to about 2 percent at 100 Hz and higher.
It climbed steeply at lower frequencies, to about 18 percent at 20 Hz. That is not significantly different from what we have measured from some good conventional speakers that are smaller and less expensive than the BP 2000. On the other hand, the BP 2000 can be driven to truly room-shaking levels in the low bass without much audible evidence of subwoofer (or any other) distortion. We measured average room levels (with musical program material) of close to 105 dB in some of our listening tests. As with any speaker, the ultimate proof of performance is in the listening. Over the years I have heard a few (very few!) speakers, usually at industry shows, that overwhelmed me and were clearly superior to almost any- thing else I had heard prior to that time. Without exception, those speakers were far more expensive (by a factor of many times), and usually much larger, than the BP 2000.
I never had the opportunity to live with those speakers and listen to them at length with material of my own choosing, and the specific program material plays an enormous role in one's listening impressions. The Definitive Technology BP 2000 is the first speaker I have been able to audition in my own familiar surroundings that has given me that special thrill that usually costs ten or more times its price to obtain. When I heard it demonstrated at the 1995 Winter Consumer Electronics Show (CES) in Las Vegas, I knew it was something special, and the more I listen to it now the more that feeling is confirmed. For one thing, driven by even a modestly powered amplifier, it can play louder than I can imagine anyone would normally want to listen, yet without audible distortion. This speaker is just loafing along at any level one would reasonably use in a home. The bipole configuration generates a pleasingly natural stereo stage, and the sub woofers provide a foundation that you can feel as much as hear. Frankly, if circumstances allowed, I would choose these speakers for my self.
Alas, space and decor considerations make that impractical. And I hate to pass up a bargain like this one! Consider what you get for $3,000: two first-rate bipolar speakers, two 15-inch subwoofers, and two 300-watt amplifiers, all packaged in two attractively styled columns that occupy one square foot each of floor space. I doubt that you can get a better sounding system for less than several times the price of the BP 2000. And one more thing: You don't need exotic equipment to get high-caliber sound from a pair of BP 2000's. The speaker was demonstrated at CES with very high-end cables and amplifiers. I used a 75-watt receiver and 14-gauge Radio Shack speaker wire, and I doubt that an additional $20,000 spent on that end of the system would have made any appreciable improvement.
The BP-2000 is, price notwithstanding, a remarkable value. Definitive Technology, Dept. SR, 11105 Valley Heights Dr., Baltimore, MD 21117 Source: Stereo Review (09-1995) by Julian Hirsch Next All Related Articles Updated: Tuesday, 2016-09-27 21:18 PST.
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. Huge speaker sound from a compact, easy to place center channel speaker. Pressure-coupled mid/bass radiators deliver rich, warm sound. Can be shelf or wall mounted.
Enjoy clear, high definition sound thanks to exclusive BDSS technology drivers. Beautiful high gloss Black finish ProCenter 2000 Center Channel Speaker—the heart of a spectacular Home Theater speaker system The ProCenter 2000 is Definitive's best center speaker in the acclaimed ProCinema Series. Its compact dimensions, flat, accurate frequncy reponse and outstanding dynamic range make the ProCenter 2000 a great choice for systems based around Definitive BiPolar Series speakers as well as systems based on ProCinema components. A ProCenter 2000 along with four ProMonitor 1000s and a matching ProSub 1000 makes a complete ProCinema 1000+ system.
All the components of the system are packed and sold separately allowing you to mix and match Pro Series components to build the system that best suits your needs. Don't let the ProCenter 2000's small size fool you—it is a remarkably sophisticated product with huge sound. The 2000 incorporates many of the same technologies as Definitive's top-of-the-line models including BDSS drivers, pure aluminum dome tweeters, and planar pressure coupled mid/bass radiators for home theater sound quality that will astound you. The Secret to Its Big Sound Competing center channel speakers of this size usually have weak lower-midrange response; that part of the audio range that contains the 'warmth' and 'body' of voices and musical instruments. Listen to a male vocal on typical small satellite speakers and you will instantly hear what we mean. The ProCenter avoids this critical problem by pressure-coupling our exclusive BDSS technology drivers to two equal-sized mid/bass radiators cleverly placed on the sides of the speaker.
This technique doubles the lower-midrange/bass radiating area of the speaker without increasing the size of the enclosure. You'll enjoy the kind of rich, warm and life-like sound quality that you thought was only possible with big, hard to place speakers.
Center Channel Muscle As much as 75% of a movie's soundtrack is played by the center channel loudspeaker making it arguably the most important speaker in a home theater system. It is the key to getting intelligible dialog and true-to-life sound effects. So we lavished extra attention on the ProCenter 2000.
It features 2 of the same 5-1/4” BDSS drivers used in ProMonitor 1000 satellites along with two 5-1/4” mid/bass radiators on the sides of the enclosure, allowing it to play loud and clear with high tonal accuracy. Easy to Place, Easy to Use Small enough to disappear in a room but beautiful when in plain view, the ProCenter 2000 can be shelf or top-of-TV-mounted. Its built-in foot allows you to adjust the angle of the speaker in the vertical plane to aim the speaker at listener's ear height. Or you can wall mount it using two after market wall mounts (not included). The Sound Sonically, the ProCenter 2000 is a revelation in terms of achieving incredible sound at an affordable price. It fulfills with aplomb its most important job of delivering perfectly clear and intelligible dialog to every listener in the room.
It dishes out high impact sound effects with distortion-free dynamics but is also capable of great subtlety to excel equally with music or movies.
Home Audio Speaker When we buy new device such as Definitive Technology BP 6B we often through away most of the documentation but the warranty. Very often issues with Definitive Technology BP 6B begin only after the warranty period ends and you may want to find how to repair it or just do some service work. Even oftener it is hard to remember what does each function in Speaker Definitive Technology BP 6B is responsible for and what options to choose for expected result. Fortunately you can find all manuals for Speaker on our side using links below.
Definitive Technology Bp2000
Definitive Technology BP 6B Manual. Congratulations. BP 6B. Definitives Extraordinary Bipolar BP 30, 10B, 8B and 6B Now Incorporate BP 2000 Series Technology. BP 10B. BP 8B.
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The Definitive Bipolar Home Theater System. the most complete well-rounded audio/video speaker system weve heard. Video Magazine Also you can find more Definitive Technology manuals or manuals for other Home Audio.
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The driver complement in the BP2006TL consists of two 4½-inch cast-magnesium-basket polymer midbass drivers with a 1-inch pure-aluminum-dome tweeter and that's just what's in front. Since this is a bipolar creation, the same combination is reproduced on the backside of the speaker. That 'dinky' 8-inch subwoofer, strapped to its own 250-watt amplifier, invisibly fires from the side of the speaker. Interestingly, Def Tech has a patent on the integration of a bipolar array with a side-firing woofer. Once again, they've done the obvious while everyone else was oblivious. Def Tech unleashed the idea of a powered subwoofer built into a tower speaker with the BP2000. Reviewers and consumers ate up the idea like a hot bratwurst late in the fourth inning.
It's definitely convenient. There's no need to find room and run wiring for an extra subwoofer box in your listening room. That alone might have made the idea a bestseller, but, according to Def Tech, the idea really originated as a way to make the speaker sound better. Dual subwoofers (one in the left speaker and one in the right speaker) can provide more-linear bass reproduction throughout the room than a single one can. Since the sub is right there near the tweeter and midbass drivers, there are fewer potential timing or phasing problems.
And, since Def Tech knows which subwoofer is going to be used with the mid and upper portions of the main speaker, they can optimize the entire system to take advantage of what each part does best. Speaking of optimizing the system, building a good bipolar speaker means more than just slapping the same drivers on the backside of the cabinet and shipping it out the door. Definitive uses separate and different crossovers for the front and the rear drivers because, with a bipole, it's the total output of the front and rear that's important.
The company spends oodles of time fine-tuning and voicing the speakers, doing real-world analysis in a real anechoic chamber at the NRC in Canada—an expensive, exhausting step other manufacturers often choose to forego in place of computer modeling. For speaker designers, the NRC is the equivalent of Mecca, the Vatican, or Cooperstown, depending on your religion. It's kind of like the difference between taking batting practice on your PlayStation and walking up to the plate and really swinging at 90-mile-per-hour-plus fastballs. (We know which one McGwire does.) Listening to the BP2006TLs, the first thing I sensed was that something was wrong. As far as tower speakers go, these aren't that big, and yet the sound coming out was big—way bigger than what I thought was physically possible! And that was the impression with just casual listening. Acoustically simple pieces like 'Fatherless at 14,' a sad but sweet song by Kendall Payne (from Jordan's Sister), came across with the singer's voice rock-solid in the center, flanked by the guitar accompaniment on the left and right.
You could easily imagine yourself sitting there in the studio with her as she cut this piece. The detail was pinpoint and precise, like a fine European speaker, yet the bass was not shy (nothing dinky here!). The soundstage was big and bold.
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Additional discs confirmed that these are not just fine music speakers—they're fantastic music speakers. Next out of the box was the C/L/R 2300.
At only 5¾ inches tall, 19½ wide, and 12 deep and sporting a black sock and end caps, it looks right at home on top of most any big tube or projection TV. To go along with its dual 4½-inch midbass drivers (the same ones found in the BP2006TL), there's an 8-inch long-throw woofer with a dedicated 150-watt amp. The woofer fires out of the top of the speaker (when positioned horizontally). There's even an LFE input on the back.
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