ART dADB Manual de Usario

ART No categorizado dADB

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Dual Active Direct Box
USER'S MANUAL
2
IMPORTANT SAFETY INSTRUCTIONS - READ FIRST
This symbol, wherever it appears, This symbol, wherever it appears, alerts you
alerts you to the presence of uninsulated to important operating and maintenance
dangerous voltages inside the enclosure that instructions in the accompanying literature.
may be sufficient to constitute a risk of shock. Please read the manual.
Read instructions
Retain these safety and operating instructions for future reference. Heed all warnings printed here and on the
equipment. Follow the operating instructions printed in this user guide.
Grounding
Do not defeat the grounding and polarization means of the power cord plug. Do not remove or tamper with the
ground connection on the power cord.
Moisture
To reduce the risk of fire or electrical shock, do not expose the unit to rain, moisture or use in damp or wet
conditions. Do not place container of liquid on it, which may spill into any openings
Heat
Do not locate the unit in a place close to excessive heat or direct sunlight, as this could be a fire hazard.
Locate the unit away from any equipment, which produces heat such as: power supplies, power amplifiers and
heaters.
Environment
Protect from excessive dirt, dust, heat, and vibration when operating and storing. Avoid tobacco ash, drink
spillage and smoke especially that associated with smoke machines.
Handling
Protect the controls from damage during transit. Use adequate padding if you need to ship the unit. To avoid
injury to yourself or damage to the equipment take care when lifting, moving or carrying the unit.
Servicing
Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled liquid or
the power cord or plug becomes damaged during a lightning storm or if smoke odor or noise is noted. Refer
servicing to qualified technical personnel only.
Installation
Install the unit in accordance with the instruction printed in the user guide.
3
OVERVIEW
The ART dADB provides two independent high quality active interfaces that let you connect
instrument, line, or speaker level signals to a mixer or other balanced inputs. Each of the high
impedance ¼-inch inputs are buffered and converted by very low noise active electronics into an
isolated, balanced, low impedance signal output. The dADB has an extremely flat and wide frequency
response and can handle high signal levels. This gives the dADB a very clean and neutral sound with
a wide variety of signal sources and over long signal runs in high noise environments.
The input ATTENUATOR switches allow for a wide range of signal levels and the input THRU jacks
allow for tapping off of your signal chain. The GROUND LIFT switches let you totally separate the
input and output signal grounds, when appropriate, to isolate two systems, thereby reducing hum and
ground-loop noise.
What further sets the dADB apart from other “DI” boxes are its extended features and versatility. We
have added switchable low pass FILTERs that cut out all very high frequency interference. These
Bessel filters operate outside of the audio range and are primarily intended to reduce radio frequency
interference before it gets into the main system. The filters are also very effective in reducing any
digital computer noise artifacts when using the dADB as an interface between a computer-based
audio workstation and your monitors. The PHASE INVERT switches allow you to switch signal
polarity right at the source. This feature is especially handy when you are combining a direct tap with
a microphone feed in the mix.
The dADB's active circuitry is powered by phantom voltage coming into the OUTPUT connections or
by an internal 9V battery if external power is not available. When powered by a battery it draws less
than 7.5 mA, which should provide more than 100 hours of operation with a new battery (an alkaline
battery is recommended). If phantom power is available, then the dADB will automatically draw power
from the external source. In this case, if the BATTERY POWER switch is pushed in, a small amount
of power will also be drawn from the battery. So be sure the switch is off if you want to run from just
phantom power. The POWER LEDs light more dimly when the unit is running from the battery, light
more brightly when it is running from phantom power, and are off when the unit is inactive.
The compact black all steel case and it’s active design allow the dADB to provide years of trouble free
service in Live Sound, Permanent/Fixed Install, D.J., and virtually any PA application. It’s full feature
set, rugged construction, and high-end specifications make the dADB the obvious choice.
Features
 Fully active design
 Phantom voltage or 9V battery powered
 Converts high-impedance balanced / unbalanced inputs into 600 Ohm balanced
outputs
 Switchable input attenuation (0, -20, -40 dB)
 Switchable low pass filter
 Switchable phase invert
 Switchable ground lift
 ¼-inch TRS connector inputs and thru connections
 XLR connectors for balanced outputs
 Rugged steel case

Especificaciones del producto

Marca: ART
Categoría: No categorizado
Modelo: dADB

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