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The Digital Sound System 80, short DSS80, was a three-piece PC audio system co-developed by Microsoft and Philips. It debuted on the 1998 Electronic Entertainment Expo (E³) and is most likely the only speaker system ever released by the Microsoft Corporation. It also remains one of the very few featuring Philips' wOOx subwoofer technology. The DSS80 featured technological innovations in comparison with contemporary systems. For instance, it didn't require a sound card installed but actually featured its own integrated sound hardware which could be connected via USB and allowed digital quality playback, synchronized hardware and software volume controls, the use of a 10-band graphic equalizer and Microsoft Surround Sound. To support computers without USB, and to enable users to take advantage of present high-end sound hardware, it additionally featured 3.5mm analog line-in. It was possible to connect the system both ways to ensure highest compatibility with both analog and digital audio content. ==Technical specifications== *System type: Biamplified, stereophonic speakers and monaural subwoofer *Amplification: High efficiency, class-D switch-mode power amplifier *Rated power output (per IEC 268.3): * *Subwoofer: 44 W * *Left/Right Speakers: 32 W, 16 W per speaker *Frequency response: 40 Hz to 20,000 Hz *Transducers: * *Subwoofer: 5.25" Dual voice coil active woofer, 6" wOOx passive radiator * *Left/Right Speakers: 3" full range, magnetically shielded *Power supply (subwoofer only): AC 110-220 V, 50–60 Hz, 310mA @ 220V *Electronic crossover frequency (subwoofer to a speaker): 160 Hz *Electronic crossover filter slopes: * *Subwoofer: -18 dB/octave at 160 Hz * *Left/Right Speakers: +12 dB/octave at 160 Hz *Digital input sensitivity: Full Scale minus 12 dB *Analog input sensitivity: 0.180V rms for rated output power *Analog input impedance: > 10 kΩ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Digital Sound System 80」の詳細全文を読む スポンサード リンク
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