ART - dADB - Dual Active D.I Box
ART - dADB, Dual Active D.I Box, Fully Active Design, Switchable Input Attenuation
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Dual Active Direct Box
ART - dADB
featuring Fully Active Design
ART’s dADB dual active direct box acts in a unique fashion as two independent, high grade active interfaces for connecting your instrument, line, or speaker level signal to balanced inputs. The high impedance ¼” inputs are buffered and then converted via extremely low noise active electronics to offer island, balance and low impedance outputs.
The dADB delivers an incredibly flat and wide frequency response even at the highest of 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 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).
Lastly, the goregous 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.
at a glance
• Fully Active Design
• Operates on Phantom Power or 9V Battery
• Converts High-Impedance Balanced / Unbalanced Inputs Into 600 ohm Balanced Outputs
• Independently Switchable Low Pass Filter on each Channel
• Independently Switchable Ground Lift on each Channel
• Switchable Input Attenuation (0, -20, -40 dB)
• XLR Connectors for Balanced Outputs
The Tech Spec
| Features | Specification | Frequency Response | 10 Hz – 100 kHz +/- 0.5 dB @ +0 dBu |
|---|---|
| Total Harmonic Distortion | <.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) |
| Input Connections | 1/4″ TRS balanced / unbalanced (2), 470k Ω |
| Thru Connections | 1/4″ TRS (2) |
| Output Connections | XLR male balanced (2), <600 Ω |
| Input Attenuation | Switchable (0dB, -30dB) |
| 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) |
