ART Pro Audio Dual MP - Two Channel Tube Preamplifier - Manual (Page 3)

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It’s easy to interface the Dual MP with other equipment. XLR
input and output connectors are located on the rear panel.
Additional 1/4” unbalanced outputs are located on the rear
panel and 1/4” instrument/ line inputs are located on the front
panel for accessibility.
The Dual MP’s XLR connectors follow the AES standard of: Pin
1 = Ground, Pin 2 = Hot (+), Pin 3 = Cold (-).
Ideally, one input per channel should be used at a time.
However, because of its design the Dual MP can be hardwired
into a rack without having to disconnect the XLR inputs when
using the front panel jacks. If no load is placed on the XLR
input (no instrument or microphone connected) the front jack
will function as if there was nothing connected to the XLR
input. Both Dual MP inputs may be used simultaneously.
However, the two signals will sum and the signal present at the
XLR jack will tend to attenuate the signal of the 1/4” input.
Both balanced and unbalanced output connections may be
used simultaneously. This is particularly useful when using the
Dual MP as a direct box for instruments or line level signals.
**Note: If you experience a grounding hum when using both
output connectors (one to the console, one to an instrument
amp) simultaneously, a ground loop may be the problem. To
remedy this problem, disconnect the ground wire (pin 1) from
the XLR cable plugged into the Dual MP’s output. This inter-
rupts the ground path and therefore breaks the loop.
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The Dual MP is powered by an internal power supply. The
Power switch and indicator LED are located on the front panel.
If the attached power cord ever becomes damaged, discontinue
use until you can have it repaired.
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Each channel of the Dual MP can power any microphone need-
ing +48 volts DC of Phantom power. The Phantom power is
engaged and disengaged with this switch. Phantom power is
supplied to pins 2 and 3 of the XLR input jack.
W We e’’rre e O On nlliin ne e!!
For Product information, questions, applications, tips, answers
and general discussion with A R T employees look for A R T on
the Internet..
Look for the A R T folder on A Am me erriic ca a O On nlliin ne e in Craig
Anderton’s Stage Studio and Sound (keyword “SSS”) under the
Manufacturer Supported Forums. Email us at [email protected]
Look for the A R T supported area in the MIDI Forum B area on
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Co om mp pu usse errv ve e (Go MIDI). Compuserve address: 76702,3700.
Email us at [email protected]
Check out our W We eb b P Pa ag ge e at: http:\\www.artroch.com
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