Dolby DP503 Two-Channel Digital Audio Encoder
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Dolby DP503 Two-Channel Digital Audio Encoder


  • Based on Dolby Fax™ Technology
  • Inter/Intra Studio Broadcast
  • Supports Dolby AC-2, Dolby Digital, & MPEG-1 LII
  • Data Rates from 40 to 448 kb/s
  • Sampling Rates: 32, 44.1, or 48 kHz
  • High Res 20-bit A/D converters

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This Dolby DP503 Two-Channel Digital Audio Encoder is used and in excellent condition. This unit ships with a 523A/B Dolby Encoder (SS Accesory) Cable and a J107 TA Ctrl / J109 Serial Cable.

View Photo of the 523A/B Dolby Encoder (SS Accesory) Cable.
View Photo of the J107 TA Ctrl / J109 Serial Cable.

Stock # 46720-2

This used Dolby DP503 Two-Channel Digital Audio Encoder is used and in excellent condition.

Stock # 46720-1

  • Description
  • Tech Specs
  • Datasheets / Manuals 
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Designed to provide unmatched flexibility and interconnectivity, the Dolby DP503 is a two-channel digital audio encoder unit supporting Dolby AC-2, Dolby Digital, and MPEG-1 LII algorithms at data rates from 40 to 448 kbps. With Dolby Digital and MPEG-1LII, the DP503 supports single-channel, dual-mono(stereo) and joint-stereo formats, at 32, 44.1, or 48 kHz sampling rates.

The DP503 is ideal for broadcast, production, and telecommunications applications requiring high audio quality at efficient data rates. Uses include studio interconnection via ISDN for remote recording and post-production applications (Dolby Fax™), broadcast remotes, and satellite systems.

The DP503 accepts one or two channels of digital audio via AES/EBU or S/PDIF audio inputs. Analog audio inputs with 20-bit A/D converters are also provided, as are RS-232 ports for such purposes as ISDN terminal adapter control, auxiliary data, remote control, or software upgrades.

Synchronization is derived from either a user-provided external clock or the unit’s own internal clock. PCM audio is processed by the user-selected algorithm and formatted with timing information into a single serial RS-449 output datastream at the chosen data rate.

Both front-panel system status indicators and rear-panel logic-level tallies are provided, as well as an internal test tone generator for system set-up and troubleshooting. For monitoring and other applications, a complementary decoder unit, the Dolby DP524,is available that supports the same algorithms and data rates.
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Manuals, Datasheets, Drivers, Links

Dolby DP503 Technical Specifications (pdf) 
Link to Dolby Website