• Dolby Digital Media Adapter DMA8Plus

    Dolby® Digital Media Adapter DMA8Plus

    Dolby DMA8PLUS Key Features

    • Flexible Inputs and Outputs

      Four digital inputs accept up to eight channels of PCM digital audio as well as Dolby Digital and Dolby E bitstreams. Two-channel audio sources can be decoded as discrete L/R, Dolby Pro Logic, or Dolby Pro Logic II. Analog audio outputs are calibrated to cinema processor reference levels to ensure a straightforward interface with your cinema's existing sound processor.

    • Easy Setup

      Easy to set up via a laptop computer, the Dolby DMA8Plus can be controlled by your cinema's automation system via standard GPI/O automation, serial, or Ethernet commands.

    • External Source Compatibility

      Includes a switched "through" connection for external film audio decoders or six-channel analog sources such as the Dolby Digital Adapter DA20. (In this way, both the DMA8Plus and the DA20 may share the cinema processor's six-channel input format.)

    • Adjustable Global Audio Delay

      A separate adjustable global audio delay is assigned to each digital input to ensure that sound and picture are perfectly synchronized during digital cinema presentations. Different delays can be assigned to different inputs, giving flexibility with alternative content sources that require different delays.

    • Convenient Front-Panel Design

      The front panel is designed to provide a wealth of feedback and usability. Simple manual control is provided by the four digital input buttons and one film pass-through button. The valid indicators verify digital signal presence on each associated input. Other indicators reveal the bitstream format, the Decode mode, and eight-channel analog output signal presence. A USB port provides a reliable PC connection for the setup software application.

    The Dolby Digital Media Adapter DMA8Plus provides digital-to-analog conversion of a digital cinema system's audio to integrate with an existing cinema processor that may not already provide this capability. Four separate digital inputs will accept up to eight channels of PCM digital audio as well as Dolby Digital, Dolby E, Dolby Pro Logic, and Dolby Pro Logic II bitstreams. A separate, adjustable global audio delay is assigned to each digital input to ensure that sound and picture are perfectly synchronized. The front panel is designed for usability, with manual control and digital clock status for each digital input selection, Decode mode status, and eight-channel signal presence. Dolby DMA8Plus setup software is used during installation as well as for interactive remote monitoring.

    Dolby DMA8Plus Specifications


    • 1-U rackmount chassis frame

    Digital Audio Source Formats

    Dolby Cinema Processor Compatibility

    • CP650, CP500, CP200, CP65, CP55, CP45

    Global Audio Delay

    • Adjustable delay of all channels from 0–250 ms

    Surround Channel Delay

    • Digital media program sources: adjustable from 0–150 ms

    Power Requirements

    • 100–240 VAC, 50–60 Hz

    Dimensions and Weight

    • 1-U rackmount chassis
      44 × 483 × 342 mm (1.75 × 19 × 13.5 inches)
    • Net: 4.5 kg (10 lb)

    Environmental Conditions

    • Operating: 0°C–40°C (32°F–104°F),
      Nonoperating (storage): 0°C–85°C (32°F–185°F)
    • Humidity: 20%–80% relative, noncondensing

    Regulatory Notices

    • North America: This unit complies with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules, and Industry Canada ICES-003 Class A requirements. It is UL Listed for the US and Canada.
    • Europe: This unit complies with the requirements of Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC and carries the CE marking accordingly. RoHS compliant.

    Dolby DMA8Plus Front Panel Specifications

    PC Connection

    • USB port for setup operations and software upgrades

    Input Selector Buttons

    • Digital 1 through 4 source buttons
    • Film source button


    • Valid LEDs represent digital input clock presence for each digital input
    • Format LEDs indicate PCM, Dolby Digital, Dolby E, or Aux (future) processing
    • Decode mode
    • LEDs indicate Dolby Pro Logic II, Pro Logic®, or Discrete modes
    • Output activity LEDs indicate signal presence of each output channel

    Dolby DMA8Plus Rear Panel Specifications

    Analog Audio Output

    • 25-pin male D-connector, balanced for connecting to a Dolby cinema processor
    • L, C, R, Ls, Rs, Sw, 7, 8

    Analog Audio Input

    • 25-pin female D-connector for six-channel analog input from the output of a DA20 or other external processor, which is passed through when Film mode is selected or during power-off

    CP, DA Control

    • 25-pin male and female connectors for format sensing and control providing a customized interface for each Dolby cinema processor

    RS-232 Serial Port

    • 9-pin female D-connector for interfacing with software-based automation systems by way of ASCII command strings

    10Base-T Ethernet Port

    Digital Media Automation

    • 9-pin female D-connector, ground switching relay contact closure for each front-panel button control; relay contacts provided for CP200 SW control (closure upon any digital format selection)

    Digital 1 Input (4 × AES)

    • 25-pin female D-connector provides four AES/EBU inputs of PCM audio (up to eight channels)
    • Input impedance: 110Ω

    Digital 2 Input (1 × AES)

    • Male BNC connector, unbalanced, per AES-3id-1995/SMPTE 276M
    • Input impedance: 75Ω

    Digital 3 Input (1 × AES)

    • Male BNC connector, unbalanced, per AES-3id-1995/SMPTE 276M
    • Input impedance: 75Ω

    Digital 4 Input (Optical)

    • Optical connector for digital input
  • Customer Support

    Get Support

    Log in to the Dolby Customer portal for help with your customer or partner account, or to read warranty and maintenance policies.

    Dolby Customer Portal

    Contact Us

    Send us your questions or feedback.

    Contact Us