ART dADB Direct Box

PA SKU # ART DADB MFR # DADB UPC # 840402019190
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  • Product Highlights
  • Active
  • Dual Channel
  • Switchable Low-Pass Filters
  • Ground Lift Switches
  • Phase Reverse per Channel
  • Phantom Power or 9V Battery Operation
  • Compact Steel Case

Dual Active Direct Box

The ART dADB dual active direct box acts as two independent, high quality active interfaces for connecting instrument, line, or speaker level signals to balanced inputs. The high impedance 1/4-inch inputs are buffered and converted by extremely low noise active electronics to deliver isolated, balanced, low impedance outputs.

The dADB delivers an extremely flat and wide frequency response even at high input levels, making it a virtually acoustically transparent DI solution.

Input attenuation on each channel allows for a wide range of source signal levels. Independent parallel thru jacks allow for tapping the signal chains. A Ground Lift on each channel allows for totally separate the input and output signal grounds to isolate two systems when required, thus reducing hum and ground-loop noise.

Switchable low pass Bessel filters eliminate high frequency interference. Operating outside of the audio range these complex and effective filter circuits are primarily intended to eliminate radio frequency interference before it gets into the main system. They also effectively reduce digital computer noise making the dADB the ideal DI solution for laptops, computer workstations and peripherals when used in stereo PA applications.

The dADB's active circuitry is powered by phantom power or by an internal 9V battery when external power is not available. Low current draw (less than 7.5 mA) should provide more than 100 hours of operation with a new battery (alkaline recommended).

The compact black all steel case and active design ensure unmatched long-term reliability in Live Sound, Permanent/Fixed Install, D.J., or virtually any PA application.
  • Fully Active Design
  • Operates on Phantom Power or 9V Battery
  • Converts High-Impedance Balanced / Unbalanced Inputs Into 600 Ohm Balanced Outputs
  • Switchable Input Attenuation (0, -20, -40 dB)
  • Independently Switchable Low Pass Filter on each Channel
  • Independently Switchable Phase Invert on each Channel
  • Independently Switchable Ground Lift on each Channel
  • 1/4-inch TRS Connector Inputs and Thru Connections
  • XLR Connectors for Balanced Outputs
  • Rugged Steel Case
  • Input Connections: 1/4" TRS balanced / unbalanced (2), 470k Ohm
  • Thru Connections: 1/4" TRS (2)
  • Output Cannections: XLR male balanced (2), <600 Ohm
  • Input Attenuation: Switchable (0dB, -30dB)
  • Frequency Response: 10 Hz - 100 kHz +/- 0.5 dB @ +0 dBu
  • THD: <.05% (typical)
  • Dynamic Range: > 100 dB (typical)
  • Channel Separation: > 80 dB (typical)
  • Maximum Input Level: +4, +24, +44 dBu (depending on attenuator setting)
  • Maximum Output Level: +6 dBu (battery powered), +14 dBu (phantom powered)
  • Power Requirements: 9V @ 7.5 mA (battery, alkaline recommended) / 18-48V DC @ 6.4 mA (phantom power , per channel)
  • Dimensions: 2" x 5" x 5.75" (51mm x 127mm x 146mm)
  • Weight: 2.7 lbs (1.22 kg)
  • Electric guitar and bass pick up output signals - The high impedance signal from a guitar or bass guitar pickup is translated by the dPDB into a low impedance balanced signal required by mixing consoles.
  • Keyboards and line level signals - The dPDB automatically balances and matches the line level outputs of modern electronic keyboards. If you are using a multiple keyboard setup and your keyboards are all plugged into a single instrument amplifier, the dPDB can be used to replace individual direct boxes. Simply send the output of the instrument amplifier to the dPDB and then to the console (instead of a separate DI box for each keyboard).
  • DJ console output signals - DJ mixers often supply only an unbalanced -10dB signal. The dPDB converts this signal to a balanced line level signal before it reaches the console, while providing a convenient method of connector transition with the capability to run long cables.
  • Speaker level signals - The dPDB's ability to accept speaker level inputs from a power amplifier's output allows post-amplifier, post eq and effects signals to be fed directly to the console. In this manner, a particular effect or amplifier sound can be sent directly to the mix.
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