ART Pro Audio dPDB - Dual Passive Direct Box - Manual

Thank you for purchasing the ART Dual Passive Direct Box. This rock solid, roadworthy DI Box is a dual version
of our popular PDB. It allows for the connection of the outputs of electronic musical instruments (or other audio
sources) to the balanced inputs of mixer consoles. The dPDB also allows connection of a music source to an
instrument amplifier while simultaneously patching it to a mixer via the dPDB.
Features:
1. Switchable Input Attenuation
* 0dB for electric guitar and bass pickups
* -20dB for line level signals, such as keyboards and CD players
* -40dB for speaker feeds
2. 50k Ohm Instrument Input
The dPDB matches the signal level and impedance with unity gain, without any adverse effects on the source
signal.
3. Parallel Link jack
The 50k ohm parallel link jack output enables you to connect the output from the dPDB directly to power
amplifiers without a separate preamplifier.
4. 600 Ohm XLR Output Jack
The 600 ohm XLR output jack enables you to send a balanced signal to a mixing console.
5. Switchable Ground Lift
A switchable ground lift is provided to help eliminate hum caused by ground loops.
6. Stereo Output Capabilities
Perfect for various stereo applications such as keyboard(s) or guitar(s).
Applications:
1. 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.
Suggested setting – set the input attenuation to 0dB.
2. 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).
Suggested setting – set the input attenuation to -20dB (line level) or –40dB (amp level).
3. 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.
Suggested setting – set the input attenuation to 0dB or –20dB.
4. Speaker level signals