Évaluations - 3, GPA: 3.3
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Facilité d'utilisation
Something of this superb pedigree was bound to rub off. In the same way that a luxury car benefits from racing technology, a 600 series loudspeaker speaker system brings with it the pleasure of acquiring the worlds leading acoustic expertise with inherent good value that will be music to your ears. • The DM640 delivers unexpected power from this moderately sized speaker. Its 59-litre enclosure accommodates two 8in low frequency units, which utilise 56 litres of volume. The bass performance is further enhanced by the use of heavier Cobex cones in the low-frequency drivers, delivering in the process a lower fundamental resonance frequency. • Unique to the DM640 is a separate, acoustically isolated 160mm midrange drive unit mounted in its own sub-enclosure, By employing the B&W innovation of Kevlar for the cone material and relieving the unit of the need to reproduce high-excursion bass frequencies. Technical highlights • An integral feature is magnetic fluid cooling which combats compression by reducing the temperature of the delicate voice coil in the tweeter at high frequencies. • The practice of flush-mounting units into stylised moulded baffles has been implemented in the 600 Series. This, together with the bevelling of baffle edges, helps to fight diffraction and produce a cleaner sound. The front polymer compound baffles and the high density fibreboard sub-baffles combine to bolster the structure, and reduce radiation from mechanical cabinet vibration. This is further improved by internal bracing of the cabinet walls. • The proven provision of being able to bi-wire or bi-amplify the system is present. Two sets of top quality, gold plated terminals are present to enable individual inputs for the high and low frequency units. Description 3 way 4th-order variable port, bass reflex 31mm high temperature voice coll on digital monitor system with bi-wiring Kapton® former Drive Units 1 x 26mm high frequency with metal Frequency Response 46Hz - 20kHz ± 2dB on reference dome, high-temperature voice coil axis magnetic fluid cooling Sensitivity 91dB spl(2.83V 1m) 1 x 160mm midrange with rigid die-cast Nominal Impedance 4 ohms chassis, Kevlar® diaphragm and 31mm Power Handling 25W - 150W into 8 ohms on high temperature voice coil on Kapton® unclipped programme former Dimensions Height: 965mm Width: 236mm 2 x 200mm bass/midrange with rigid Depth: 407mm die-cast chassis, Cobex diaphragm and Finish Simulated veneers of walnut or zelda LISTEN AND YOU' LI SEE B&W Loudspeakers Ltd reserves the right to amend details of the specifications without notice in line with technical developments. E & OE. All trademarks acknowledged. www.bwspeakers.com...