Applied Research and Technology (ART) Dual MP Owner's Manual

DUAL MP

Two Channel Tube Microphone Preamplifier

UUSSEERR’’SS GGUUIIDDEE

IInnttrroodduuccttiioonn

Thank you for purchasing the

DDuuaall MMPP

- and congratulations:
You now own one of the most sophisticated pieces of audio sig­nal processing available. Offering a superb level of sound quali­ty, the Dual MP’s special tube and integrated circuit design
combined with a straightforward user interface quickly and easi­ly gives you access to all of its features.

FFeeaattuurreess

The A R T “SOUND”! - (not available elsewhere)
Two independent channels of operation
XLR balanced inputs and outputs
1/4” TS unbalanced inputs and outputs
Hybrid- 12AX7/ quad transistor gain stages
+48V Phantom power
Phase Reversal
20dB gain switch
Independent input and output level controls
Four stage “sonic character” LED Array
>60dB of gain
>100dB dynamic range
Internal power supply
Front panel instrument/ line input jacks
All steel construction
Designed and manufactured in the USA

Fill in the following for your future reference:

Date of purchase: ___________________
Purchased From: ____________________
Serial Number: 254-________

This a great time to fill out the User Registration card included
with you Dual MP to become a completely informed A R T
Artist. Return-ing the card to us ensures you of becoming the
first to know about new A R T products as well as any further
developments from A R T.

11

CCoonnnneeccttiioonnss

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 inter­rupts the ground path and therefore breaks the loop.

CCoonnttrroollss,, SSwwiittcchheess aanndd IInnddiiccaattoorrss

PPoowweerr
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.

PPhhaannttoomm PPoowweerr SSwwiittcchh
Each channel of the Dual MP can power any microphone need­ing +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.

WWee’’rree OOnnlliinnee!!

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

AAmmeerriiccaa OOnnlliinnee

in Craig
Anderton’s Stage Studio and Sound (keyword “SSS”) under the
Manufacturer Supported Forums. Email us at [e-mail]

Look for the A R T supported area in the MIDI Forum B area on
CCoommppuusseerrvvee

(Go MIDI). Compuserve address: 76702,3700.

Email us at [e-mail]

Check out our

WWeebb PPaaggee

at: http:\\www.artroch.com

22 33