ART dual mp User Guide

Page of 7
C
Co
on
nn
ne
ec
cttiio
on
nss
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.
C
Co
on
nttrro
ollss,,  S
Sw
wiittc
ch
he
ess  a
an
nd
d  IIn
nd
diic
ca
atto
orrss
P
Po
ow
we
err
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.  
P
Ph
ha
an
ntto
om
m  P
Po
ow
we
err  S
Sw
wiittc
ch
h
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 artroch@aol.com
Look for the A R T supported area in the MIDI Forum B area on
C
Co
om
mp
pu
usse
errv
ve
e (Go MIDI). Compuserve address: 76702,3700.
Email us at artroch@cis.compuserve.com
Check out our W
We
eb
b  P
Pa
ag
ge
e at: http:\\www.artroch.com 
2
2
3
3