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™
Instruction manual
MX-3
3-CHANNEL MIXING PREAMP
Flush-mounted / surface-mounted mono preamp, 2 x microphone / 1 x LINE
with LF / HF-EQ, phantom.
Made in EU
ENGLISH
MX-3 — 3 CHANNEL MIXING PREAMP
Phoenix Professional Audio GmbH
Gewerbepark Markfeld 5
D-83043 Bad Aibling / Germany
Tel.: +49(0)8061-495603-0
Fax: +49(0)8061-495603-1
www.phoenix-pa.com
www.phoenix-pa.com/shop
© Copyright 2018 Phoenix Professional Audio GmbH
www.phoenix-pa.com / www.phoenix-pa.com /shop
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
DOC-231118
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MX-3
™
Instruction manual
IMPORTANT SAFETY INSTRUCTIONS & SYMBOL DECLARATION
1. Read this manual carefully.
2. Keep this manual in a safe place.
3. Observe all warnings.
4. Follow all instructions.
5. WARNING: To reduce the risk of re or electric shock, do not expose this equipment to rain or moisture.
Do not use this device near water.
6. Clean only with a dry cloth.
7. Do not cover any ventilation openings.
8. Do not install near heat sources such as radiators, air vents, stoves or other equipment (including ampliers) that
radiate heat.
9. Use only Phoenix Professional Audio GmbH products and specied accessories.
10. Have maintenance performed by qualied service personnel only. The device must always be serviced if it has been
damaged in any way, for example, if the power cord or plug is damaged, liquids have been spilled on the product, or objects
have fallen into the product, the product has been exposed to rain or moisture, is not working normally, or has been dropped.
EXPLANATION OF GRAPHIC SYMBOLS
The exclamation mark in a triangle is intended to alert the user to the presence of
important operating and maintenance instructions in this manual.
The symbol consisting of a lightning bolt with an arrowhead in a triangle is intended
to alert the user to the presence of non-isolated, dangerous voltages within the
housing that may be strong enough to give off an electric shock.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE
COVER. USE QUALIFIED PERSONNEL FOR ALL MAINTENANCE WORK.
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
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MX-3
™
Instruction manual
GENERAL INFORMATION
The MX3 is a universally applicable mono preamplier with 2 MIC and 1 LINE inputs (mixable).
Universal application, easy operation and high overload resistance characterize the MX-3.
The preamplier is equipped with highquality builtin XLR jacks (Neutrik), switchable phantom power for
condenser microphones and separate LF / HF sound control for each of the three inputs and master section.
Separate sound control ensures precise room equalization and perfect adaptation to room acoustics.
In addition, the MX3 has switchable phantom power 18 V, LOW / HIGH ONOFF jumper per mic input.
The output of the preamplier MX3 is transformer balanced with select jumper for 0 dB or +6 dB signal
setting, providing high noise immunity at +6 dB setting of the output, so that the signal feedback can be done
by JY(ST)Y with 2x2x0.6 line.
The device is suitable for surface and ushmounted installation (with matching optional surfacemounted
or ushmounted housing).
These devices comply with the Electromagnetic Compatibility Directive 89/336/EEC and the Low Voltage
Directive 73/23/EEC.
SAFETY INSTRUCTIONS
Before putting the preamplier MX3 into operation, we ask you to carefully read the safety instructions.
We ask you to perform the installation according to the following guidelines:
1 - Choose a dry environment.
2 - Avoid the proximity of heat sources.
3 - Only connect the device to 24 V DC power supply.
KEY FEATURES
- 2 x balanced microphone inputs
- 1 x unbalanced LINE input
- Separate HF / LF control
Switchable LOW / CUT lter (jumper)
Switchable phantom power (jumper)
- Transformer balanced output
Output 0 dB / +6 dB (jumper)
HF / LF ONOFF (jumper)
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
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MX-3
Instruction manual
FRONT
™
1
2
3
4
1.- EQUALIZATION / VOLUME / MASTER
VOL. - These controls are used to set the volume or sensitivity of the signals present at the inputs.
Bass controls „LOW“ are used to raise or lower low frequencies (+/ 12 dB). Treble controls „HIGH“ are used
to raise or lower high frequencies (+/ 12 dB). With the master control „MASTER“ and the treble and bass
controls you can determine the overall volume and equalization.
2.- MICROPHONE INPUTS
Balanced XLR inputs - for connecting a dynamic mic. or - if the PHANTOM-POWER is switched on - intended
for a condenser mic.
3.- LINE INPUT
Cinch sockets „L“ and „R“ - suitable for connection of a sound carrier device with AUX output signal such as CD,
DAT, TUNER. The input is unbalanced 10 kOhm/0 dB.
4.- LED LEVEL INDICATOR
LED level display -27dB to 0 dB - shows the level of the output signal.
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
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MX-3
Instruction manual
REAR (SECTION)
™
LOW/HIGH ON-OFF
Jumper switch can
be used to enable or
disable the functions
of the LOW-HIGH
controls on the front
panel
0 dB/+6 dB
Jumper to select the
output signal
0 dB or +6 dB
LINE OUT
Output, used for
connection to power
amplier or mixing
preamplier or to the
main control unit
POWER SUPPLY
CONNECTION
Voltage supply 24VDC,
please note the
correct polarity +/-
LOW CUT
Jumper for activating
or deactivating the
LOW CUT lter;
Please reposition
two jumpers per
input
PHANTOM POWER
Switch for switching on the PHANTOM
POWER for condenser microphones. Please
note that PHANTOM POWER may only be
activated for condenser or balanced dynamic
microphones; PHANTOM POWER should
not be active with unbalanced microphone
cables.
Balanced inputs: Strip the wire conductors by 6 mm
and connect them to the terminals as shown. Tighten
the screws.
1 GND
2 +IN
3 -IN
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
3
2
1
Unbalanced inputs: Strip the wire conductors by 6 mm and
connect them to the terminals as shown. The center pin
must be connected to the shielding pin as shown. Tighten
the screws.
1 GND und wire bridge to 3
2 +IN
3
2
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MX-3
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Instruction manual
TECHNICAL DETAILS
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TechnicAL DeTAiLS
Current consumption max.
Dimensions approx.W-141 x H-182 x D-50 (mm)
EQ +/- 12 dB
Frequency response
Line inputs unbalanced 1 x line inputs 0 dB, 0.707 V / 10 kOhm, CINCH
Mic. inputs balanced 2 x mic inputs (0.5 - 5 mV / 1 kOhm), XLR standard
Outputs
Phantom power
Power supply 24 VDC, 1A, 24 W
THD
Weight approx. 0.5 kg
MX-3
60 mA
40 Hz - 20,000 Hz
1 x balanced 0 dB or +6 dB
18V
below 0.3%
141.00 mm
182.00 mm
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
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MX-3
Instruction manual
NOTES
™
Disclaimer
The author points out that the representations, explanations, calculations and the same contained in the directive are merely exemplary in nature. They reect
the current state of knowledge and the current legal situation, but make no claim to completeness. In view of the complexity of construction projects, the development of individual solutions relevant to the respective project is indispensable. Any liability for the descriptions, applications, indications and transmissions
of the guideline or individual details or parts of it shall be hereby expressly excluded.
Important notes
The following applies to all pages of this description:
Technical changes and printing errors reserved.
The pictures are similar, color deviations reserved.
© Copyright 2018, Phoenix Professional Audio GmbH, www.phoenix-pa.com
Phoenix logo is registered with the DE Patent and Trademark Ofce (TM)
All trademarks are the property of their respective owners
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