楼上的烧友，proac官方网站对d28的介绍如下：
To improve on the highly acclaimed Response D25 would have been a daunting task but for the development of a new, slim, elegant cabinet design giving greater dispersion and featuring side venting to give the lowest frequencies more power and authority. The faultless reproduction throughout the frequency range, which made the D25 such a world-beater, has been greatly intensified with the introduction of the Response D28.The original bass driver and tweeter have been retained, but there the similarity ends. Still using the highly efficient and sensitive mid/bass driver custom built for ProAc, the crossover network has been further tuned to match the improved cabinet design and bass loading, resulting in a significant step forward in sound reproduction. A slimmer front baffle aids dispersion and increases soundstage, whilst the new port and vented arrangements found on much more expensive ProAc floorstanders, give the bottom octaves greater feel and extension. This gives the D28 slightly more efficiency and good quality valve or class 慉?transistor amplifiers with an output as low as 10 watts per channel will produce fine results in all but the very largest of rooms. These beautiful new speakers feature the traditional ProAc cabinet quality with high rigidity and heavy damping and are finished in a range of real wood veneers. The new plinth and vent design arrangement not only produce a quality of bass found in much larger speakers, but also offer a better interaction with the listening room, making cabinet placement less critical. The Response D28 offers superb sound quality with a detailed soundstage and natural, extended, powerful bass response. These sonic attributes, coupled with ProAc抯 legendary open midrange quality, make the Response D28 a winner in its class.
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