Digital Sound System 80

Digital Sound System 80

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 speaker system

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:
  • 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

Control Speaker Cable Wiring information

Plug pattern

The plug on the Microsoft DSS80 control satellite speaker ( right speaker ) is a Mini-DIN 4 [1] [2] plug. To say the connector is ADB (Apple desktop Bus) is incorrect, any ADB device plugged into this port would not operate and likewise if the DSS80 were plugged into a Mac ADB port it would not function. Therefore the only similarity is the Mini-DIN 4 connector type.

The pins on the DSS80 plug are connected to the following wires: with the index mark (labeled "B") at 12 o'clock, the pin at 2 o'clock connects to the black wire (speaker ground); the pin at 4 o'clock connects to the red wire (speaker hot); the pin at 8 o'clock connects to the yellow wire; the pin at 10 o'clock connects to the blue wire; and the ground sheath connects to the white wire. If you bypass the plug and wire the cable directly to the subwoofer, remember to mirror these connections.

The subwoofer and satellite speaker are both held together with Torx #10 screws.

Volume control issue

The DSS80 was afflicted with a glitch concerning the main volume control. At times, when one of the buttons was held down, the volume would quickly increase to the maximum, or decrease to the minimum setting. The only way to stop this process was to hit the mute button. These issues seem to be resolved when connected to Windows Vista and Windows 7.


External links

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