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  • D25 amplifier 
  • General Description

    The 2 RU D25 amplifier provides power output optimized for smaller high-efficiency d&b mobile systems, while offering the same full DSP feature set as our high-output amplifiers.
     
    A list of d&b loudspeakers supported by the D25 is included in the Release notes of the amplifier firmware.
     
    The D25 has a dynamic range of 112 dB (unweighted) and incorporates comprehensive loudspeaker management, switchable filtering functions as well as user definable equalization and delay capabilities.
     
    Onboard enhanced energy saving features, power efficiency and Automatic Wake up enable you to save on resources and meet environmental responsibility requirements.
     
    The D25 incorporates up to 16 input channels with eight Milan audio inputs, four analogue inputs, and four AES3 channels.
     
    The D25 utilizes a switch mode power supply with automatic mains range selection and active Power Factor Correction (PFC) to produce a clean current draw and ensure stable and efficient performance under adverse mains conditions.
     
    Access to the d&b Remote network is via Ethernet using the Open Control Architecture protocol (AES70 / OCA). The D25 is controlled using the integrated web interface, which enables access via a browser, or using the d&b R1 Remote control software.
     
    For applicable d&b loudspeakers, d&b LoadMatch enables the D25 amplifier to preserve tonal balance when cable lengths of up to 70 m (230 ft) are used.

  • Product Features

    Digital Signal Processing

    Equalizer                                                                       2 x 16-band PEQ/notch/shelving/asymmetric

    Latency analog and digital inputs                                0.3 ms

    Delay setting                                                                0.3 ms - 10 s

    Configurations                                                              A list of d&b loudspeakers supported by the 25D is included

                                                                                          in the Release notes of the amplifier firmware.

    Function switches                                                         d&b loudspeaker specific circuits

    Frequency generator                                                    Pink noise or Sine wave 10 Hz - 20 kHz

     

    Controls and indicators

    Power                                                                           Mains Power switch

    Status information and monitoring                             Colour touchscreen, 4.3" 480 x 272 pixel

    SCROLL/EDIT                                                                Digital rotary encoder

    Display                                                                         Colour TFT touchscreen, 4.25"/480 * 272 pixel

     

    Connectors

    Sampling frequency Digital AES/EBU                          44.1, 48, 96, 192 kHz

    INPUT ANALOG (A1 - A4)                                            3-pin XLR female

    ANALOG LINK (A1 - A4)                                               3-pin XLR male

    INPUT DIGITAL (D1/2, D3/4)                                        3-pin XLR female, AES3

    INPUT Network Audio (Milan) (M1-M8)                      etherCON® built-in 5-port AVB Ethernet switch 100/1000 Mbit

    DIGITAL LINK (Output)                                                 3-pin XLR male

    Speaker outputs A/B/C/D                                            NL4

    Mix TOP/SUB / 2-Way Active output A/B and C/D      NL4

    4 Channel output                                                         NL8

    Ethernet                                                                        2 x RJ 45, 1 Gbit / 100 Mbit Ethernet

    Mains connector                                                           powerCON® TRUE1 TOP

     

    Data (linear setting with subsonic filter)

    Maximum output power per channel

    (THD+N < 0.5%, all channels driven)

    CF = 12 dB at 4 / 8 ohms                                             4 x 1800/900 W

     

    Power supply

    Type                                     Autosensing switch mode power supply with active Power Factor Correction (PFC)

    Rated mains voltage           100 - 127 / 208 - 240 V, 50 - 60 Hz

     

    Dimensions / weight

    Dimensions (h x w x d)        2 RU x 19" x 512 mm (20,2")

    Weight                                13.8 kg 

                                                30.4 lb

     


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