All this technology is in a very simple MDF cabinet with the aforementioned aluminum front baffle with a thickness of 6 mm. The benefits of bidirectional wiring or amplification of such speakers are negligible.
Most high-end speakers have this capability, but it is not very useful in practice. The D15 has two types of five-way nickel-plated connectors for those who want to connect two amplifiers to the speakers. This is called a “linear response waveguide,” although it certainly does not function as a traditional waveguide. According to the manufacturer, this dual three-dimensional system allows for a larger linear deviation. The mid-range drive is made of polypropylene, which is quite unique, Definitive Technology calls it the “BDSS Subwoofer,” which stands for “Balanced Double Surround System”. It can also protect the fragile membrane of the tweeter dome. There is a piece of plastic that partially covers the front of the tweeter, it is a phase lens that Definitive Technology calls “20/20 Wave Alignment Lens”. In its softer state, it enhances attenuation, which can tame bounces at higher frequencies.
This process dissolves the crystalline structure of the metal and becomes softer as it recrystallizes. The aluminum in the dome of the tweeter is softened, which means that it is softened by approaching the melting point of the aluminum and then slowly cooled. The D15 tweeters use an aluminum dome mounted in a waveguide. Available in glossy black and glossy white. The frequency response is 39 Hz to 24,000 Hz, the nominal impedance is 8 ohms, it weighs 23.59 kg, and its dimensions are 103.58 cm x 22.99 cm x 32.66 cm. The Definitive Technology Demand D15 speakers are three-way, tower loudspeakers that use passive radiators to increase low frequencies. Overall, the Demand D15 speakers are very nice. The Gloss White design is suitable for all brightly coloured decorations. The carbon fiber cone gives the bass drives an elegant look. The mid-range drive has a high-phase connector used by Definitive Technology on previous models. The tweeter is partially obscured by an aluminum dome on a large black front panel. There are passive radiators on both sides of the speaker that have a bright white cone. Usually, the grids make the speakers look boring, but that’s not the case here. With a glossy white finish (also available with a glossy black finish), the grille for the D15 is so minimalist that it looks almost like an abstract work of art. The grille is magnetically attached, so there are no screws that would disfigure the appearance of the front baffle. The all-aluminum front baffle is a very attractive and high-end element.įor those who want a solid look, the grille front baffle can be hidden with a light-silver material, giving the speaker a much more minimalist look.
The box-like nature of the cabinet is not alleviated by the rounding of the corner at all, in fact, the right angles are retained. Metal feet must be attached to the bottom of the D15 speakers, but this operation takes less than 5 minutes. It has a simpler speaker design than Definitive Technology’s other floor-standing speakers, and if that simplicity doesn’t go to the detriment of higher quality. They are certainly not cheap, but they are not extra expensive either.
DEFINITIVE TECHNOLOGY SUBWOOFER NOT WORKING SERIES
So while Definitive Technology has two different series that occupy a similar price range, they are still quite different. More acoustically predictable speakers with finer imaging and a wider front sound field. In comparison, the Demand series has a much more traditional speaker design. With the proliferation and flexibility of powerful and affordable subwoofers, built-in subwoofers are more designed for those who don’t want to provide space for separate speakers. This reduces the load from the external amplifier. Another difference is that the BP-9000 series uses built-in subwoofers. This results in a sound that has reflections. One difference is that the BP-9000 series uses a bipolar design where the sound comes from the back of the speaker. There are two main differences between the BP-9000 and Demand product families. The difference between the two floor-standing speakers is that the D17 uses slightly larger drives, which should give a slightly larger bass extension and a slightly more dynamic range. Two and a half years later, they finally expanded their demand range with two floor-standing and a center speaker with the D15, D17 and D5C speakers. We have tested the Definitive Technology D15 tower speakers!ĭefinitive Technology launched its “Demand” series speakers with three different bookshelf speakers back in late 2017.
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