dbx 900 Series Racks & Modules

In the early 1980s dbx introduced the 900 Series, a modular processing system using a 3U chassis with builtin power supply. Sound familiar? Yes, it’s one of the progenitors of the 500 rack system

One of the few manufacturers that supported the dbx 900 Series was Aphex – now a player in the 500 Series market with both racks & modules

The 900 Series had (at least) two racks

  • FS900, 1U, two-module, self-powered rack
  • F900A , 3U, eight-module, self-powered rack

Compatible modules included

  • 902 De-Esser
  • 903 Compressor
  • 904 Noise Gate
  • 905 Parametric Equaliser
  • 906 Flanger
  • 907 Stereo Gated Compressor Slave
  • 911 Type I Noise Reduction
  • 941A Type II Noise Reduction
  • 942A Type II Noise Reduction
  • 929 Hiss Reducer
  • 993 Mixer module
  • Aphex Compellor 9301
  • Aphex Dominator II 9721
  • Aphex Expressor 9651
  • Aphex Aural Exciter
  • Aphex Equaliser
  • BBE 702

 

I have a number of 900 Series items in my workshop queue and will update this page when I have photos and more information

Preservation Sound has more info on the 900 Series plus a download link for the original marketing material. More info here

A few forum links & threads for research:

The DBX 900 Series

https://www.gearslutz.com/board/so-much-gear-so-little-time/68346-dbx-900-frame-modules.html

https://www.gearslutz.com/board/so-much-gear-so-little-time/9762-dbx-900-rack-compression.html