Предусилитель M-AUDIO DMP2. Инструкция на английском языке

Table of Contents
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DMP2 Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Front & Rear Panels   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DMP2 Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setting The Gain   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Low-Cut Rumble Filter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Phase Inversion  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Phantom Power  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Balanced vs. Unbalanced Outputs  . . . . . . . . . . . . . . . . . . . . . 6
Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Limited Lifetime Warranty   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Introduction
Thank you for your purchase of the M  Audio DMP2
Microphone/Instrument Pre-Amplifier.  M Audio’s proven mixer and pre-
amp technology has reached its pinnacle with the DMP2, delivering a
clarity and brilliance of audiophile integrity.
The DMP2 gives you two completely independent channels of high gain,
ultra low noise pre-amps in a sturdy 1/2 rack space unit of exceptional
design and quality.  Each channel provides low impedance microphone
inputs on XLR connectors with optional phantom power, plus an alternate
high impedance instrument input on 1/4" TS jacks.  The DMP2 outputs can
be used as balanced or unbalanced via a TRS jack.
Microphones, guitars with magnetic or piezo pickups, and any instrument
that needs a boost in gain to "line level" will benefit from the punch, yet
ultimate transparency of the DMP2.  High pass "rumble" filters for each
channel eliminate unwanted low-end noise, while individual phase
inversion switches ensure that you will always achieve the greatest result
when using the DMP2 in a stereo or dual mic situation.
DMP2 Features
•   2 independent XLR, fully balanced mic inputs.
•   2  alternate, independent 1/4” unbalanced, high impedance inputs,
impedance matched for ideal performance with electric and acoustic
guitars and other high impedance mics or instruments.
•   Exceptional frequency response, extremely flat throughout all
frequencies.
•   Separate low-cut filters for each channel with switch and LED indicator.
•   Separate gain controls for each of the pre-amplifiers.
•   Individual signal and clipping LEDs for each pre-amplifier channel.
•   XLR 48v phantom power can be switched on or off for both mic inputs,
with an LED indicator.
•   Dual-purpose independent 1/4” outputs accept either tip-ring-sleeve
plugs for balanced outputs or tip-sleeve plugs for unbalanced outs.
•   Individual phase inversion switches for each channel.
•   Half rack size.
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Front & Rear Panels
Front  Panel
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1. Gain Adjustment Knobs: Separate gain controls for pre-amps 1 and 2
adjust the output volume levels independently.  Full counter-clockwise
is the minimum gain position, while full clockwise is maximum gain.
2. Signal & Clip LEDs: The "Sig" LED, when lit, indicates the presence of
input signal either at the XLR mic input or 1/4” high impedance input
jacks.  The "Clip" LED will light when that input signal is too strong and
is about to distort, or clip (2dB below clipping).  If this LED remains lit
for more than a few moments, reduce the gain adjustment knob setting.
3. Low Cut Filter Switch: Pressing and locking this switch to the ‘In’
position engages the Low-Cut filter for the associated channel.  Pressing
and releasing to the ‘Out’ position disengages the filter.
4. Low-Cut Filter LED: When lit, this LED indicates that the Low-Cut filter
has been engaged.
5. Phase Inversion Switch: This switch will invert the phase of the signal
for the selected channel 180 degrees (see section, "Phase Inversion").
6. Phantom Power LED: When lit, this LED indicates that phantom power
has been switched on for both of the mic pre-amp channels.
7. Main Power LED: When the proper power supply is applied to the
DMP2 and the Main Power switch is switched to the ‘On’ position, this
LED will light, indicating that the unit is powered up.
8. Main Power Switch: This switch, when pressed and locked to the ‘In’
position, switches the DMP2 power on.
Back  Panel
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1. 9vAC Power Supply Jack: This power jack accepts a 9v AC 500mA
2.5mm power supply.  This power supply is included with your DMP2,
and ONLY the proper supply should be used.
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