Behringer PRO MIXER User`s manual

Behringer PRO MIXER User`s manual
Version 1.0
September 2001
User’s Manual
To reduce the risk of electric shock, do not remove
the cover (or back). No user serviceable parts inside;
refer servicing to qualified personnel.
WARNING: To reduce the risk of fire or electric shock, do not
expose this appliance to rain or moisture.
This symbol, wherever it appears,
alerts you to the presence of
uninsulated dangerous voltage inside
the enclosure—voltage that may be
sufficient to constitute a risk of shock.
This symbol, wherever it appears, alerts
you to important operating and
maintenance instructions in the
accompanying literature. Read the
All the safety and operation instructions should be read before the appliance is operated.
Retain Instructions:
The safety and operating instructions should be retained for future reference.
Heed Warnings:
All warnings on the appliance and in the operating instructions should be adhered to.
Follow instructions:
All operation and user instructions should be followed.
Water and Moisture:
The appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool etc.).
The appliance should be situated so that its location or position does not interfere with its proper ventilation.
For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the
ventilation openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the
flow of air through the ventilation openings.
The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other
appliances (including amplifiers) that produce heat.
Power Source:
The appliance should be connected to a power supply only of the type described in the operating instructions
or as marked on the appliance.
Grounding or Polarization:
Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.
Power-Cord Protection:
Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed
upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point
where they exit from the appliance.
The appliance should be cleaned only as recommended by the manufacturer.
Non-use Periods:
The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
Debris and Liquid Entry:
Care should be taken that debris and/or liquids do not enter the enclosure through openings.
Damage Requiring Service:
The appliance should be serviced by qualified service personnel when:
- The power supply cord or the plug has been damaged; or
- Debris or liquid has entered the appliance; or
- The appliance has been exposed to rain; or
- The appliance does not appear to operate normally or exhibits a marked change in performance; or
- The appliance has been dropped, or the enclosure damaged.
The user should not attempt to service the appliance beyond that which is described in the operating instructions.
All other servicing should be referred to qualified service personnel.
Dear Customer,
Welcome to the team of PRO MIXER users and thank you for demonstrating your faith in us by purchasing the
Writing this foreword to you is an extremely pleasant task. After several months of intensive brainstorming and
the subsequent realization of their ideas, our engineers finally achieved an ambitious goal: the construction of
an outstanding DJ MIXER, which, due to its remarkable functions, provides maximum flexibility and impressive
performance. As with any new product, the development of this new PRO MIXER also meant a great deal of
responsibility. Throughout the entire planning and development phases, we kept you— the discerning end-user
and DJ, your requirements and your requests at the focal point of our considerations. Meeting your professional
expectations required a lot of effort and more than a few night shifts, but this is exactly the kind of challenge
that keeps us alive and kicking. Developing a new product always brings a large number of people together,
and it’s a great feeling when all involved can take pride in the results.
It is an important part of our philosophy to share our gratification with you, since you’re the most important
member of the BEHRINGER team. With your highly competent suggestions for new products, you’ve contributed
immensely to the development and success of our company. In return, we bring you uncompromising quality,
guaranteed by the stringent BEHRINGER quality control system, as well as excellent technical and audio
specifications, at an extremely favorable price. We hope that this will enable you to fully unfold your creativity
without being hampered by budget constraints.
We are often asked how we manage to produce such high-grade devices at such unbelievably low prices. The
answer is quite simple: it’s you, our customers! Lots of satisfied customers means large sales volumes, which
in turn enables us to reduce production and logistics expenses. We believe it’s only fair to pass this benefit
back to you—after all, your success is our success!
I would like to thank everyone who helped make our new PRO MIXER project possible and successful. Each of
those people made very personal contributions, from our engineers and designers to our numerous staff members
and finally to you as a BEHRINGER user.
My friends, it’s been worth the trouble!
Thank you very much,
Uli Behringer
Professional 3-channel ultra low-noise DJ mixer
s Super-smooth Ultraglide faders with up to 500,000 life cycles
s Awesome QRS 3D surround effect
s Dedicated curve control for all faders
s VCA engines for utmost reliability and smooth audio performance
s Intelligent dual auto-BPM counter with time and beat sync display
s Extremely steep frequency separation via front-panel 3-way kill switches with revolutionary keyboard-like
tap & hold action
s Gain and 3-band kill EQ (-32 dB) per channel
s Precise level meters with peak hold function per channel
s Crossfader reverse switch
s Auto-talkover function with separate depth control
s Extremely low-noise ULN-(Ultra-Low Noise) design, like those on professional studio consoles
s Gold-plated cinch sockets for excellent audio qualities
s Super-rugged construction ensures long life, even under the most demanding conditions
s Manufactured under ISO9000 certified management system
1. INTRODUCTION..................................................................................................................... 5
1.1 Before you get started ..................................................................................................................... 5
2. FRONT PANEL ........................................................................................................................ 6
Input channels ................................................................................................................................
Main out section .............................................................................................................................
PFL section ....................................................................................................................................
QRS 3D surround function ...............................................................................................................
Beat counter ...................................................................................................................................
Crossfader section ..........................................................................................................................
3. REAR PANEL ........................................................................................................................... 9
4. SPECIFICATIONS ................................................................................................................. 12
5. WARRANTY ........................................................................................................................... 13
With the BEHRINGER PRO MIXER VMX300, you have purchased an absolutely state-of-the-art DJ mixer. Its
extensive features, i.e. beat counter and effects loop, open the door to new and creative ways of working, while
making it suitable for a variety of professional applications. At the same time, the VMX300 is extremely easy
to operate, allowing you to completely unfold your creativity.
Time waits for no one, and neither you nor we want to be left behind. That’s why we invested months of
research and development into creating a DJ mixer that offers up-to-date features and technology to give you a
true cutting edge for your performances. Fully optimized for dance club applications and DJ systems, the
VMX300 promises full-blown DJ’ing fun—and success.
Let’s be honest: nobody likes reading users’ manuals. We know you want to plug in and get jammin’, but
please take the time to read the following instructions. We’ve kept them as short as possible, and it will be well
worth the few minutes it takes you. Armed with a thorough understanding of the VMX300’s features and
functions, you’ll be able to get the most out of this exciting product.
The following instructions will give you a brief run-down on the terminology and functions of
the VMX300. After reading, please store this manual in a safe place for future reference.
1.1 Before you get started
Your PRO MIXER was carefully packed in the factory and the packaging is designed to protect the unit against
rough handling. Nevertheless, we recommend that you carefully examine packaging and contents for any
signs of physical damage which may have occurred during transit.
If the unit is damaged, please do not return it to BEHRINGER, but notify your dealer and the
shipping company immediately. Otherwise, claims for damage or replacement may not be
granted. Shipping claims must be made by the consignee.
Please take care to always ensure adequate ventilation. Do not place the PRO MIXER near
heating units or heat-generating devices in order to avoid overheating.
We would like to point out that high volumes can permanently damage your sense of hearing
and/or your headphone or speaker systems. Therefore, please turn the MAIN control in the
MIC/MAIN section all the way to the left before turning on the mixer. And please exercise
caution and common sense when setting volume levels.
Fig. 2.1: Front view of the PRO MIXER VMX300
2.1 Input channels
The MIC/PHONO-LINE switch allows you to select the input signal, choosing between microphone and
line/phono. Whether the right-hand position selects the line or mic input depends on the position of the
PHONO/LINE switch on the rear panel (see
The PNONO/LINE switch on channels 2 and 3 selects one of the input pairs on the respective channel.
The “PHONO” setting (and inputs) are intended for turntables; for all other signal sources, i.e. a CD or
MD player, use the “LINE” setting and inputs. A second switch on the rear panel enables the phono
input pair to be switched to line level, allowing 2 line-level units to be connected and selected via the
PHONO /LINE switch (
Never connect line-level equipment to the highly sensitive phono inputs! The output levels of
phono cartridge systems are in the millivolt range, whereas CD and MD players, as well as
tape decks, provide outputs levels in the volt range. In other words, the level of line signals is
up to 100 times higher than phono output levels.
The GAIN control is used to adjust the input signal level.
The overall level of your signal is also effected by the EQ settings. It’s a good idea to adjust the
equalizer before you set the level with the GAIN control.
All input channels are equipped with a 3-BAND EQUALIZER with kill characteristic. The maximum
amount of attenuation (-32 dB) is much higher than the maximum boost (+12 dB), allowing entire
frequency spectrums to be “removed” from a track.
The LED chains on channels 1 to 3 display the level of the input signal (pre-fader/post-EQ).
The PFL button sends the channel’s input signal to the PFL (headphones) section.
The CHANNEL fader adjusts the final channel volume. The fader is VCA-controlled (VCA = VoltageControlled Amplifier) to ensure smooth operation and long life.
The CURVE switch underneath the channel fader enables you to select between three fade modes:
SOFT, MID and SHARP. In SOFT mode the fader controls the volume in a linear, continuous manner.
Run a track through on of the VMX300’s channels and pull the fader down slowly: the volume will
decrease gradually. In SHARP mode the fader takes on a more logarithmic effect, reducing the volume
faster towards the lower end of the fader range, even if you move the fader smoothly. MID mode is a
combination of the SOFT and SHARP modes.
Flipping the CURVE switch may cause a sudden change in volume. We recommend not changing
this setting while a signal is present.
2.2 Main out section
The OUT A and OUT B controls adjust the output levels of the AMP and BOOTH outputs, respectively.
The LEVEL METER displays the OUT A level.
The BAL A control allows you to adjust the stereo balance for the AMP output.
The PRO MIXER VMX300 is equipped with a talkover function, which works very simply: if you speak
into the microphone while a track is running, the volume of the music is automatically reduced, so that
your voice is always “in front”. The TALK control allows you to determine how much the music volume is
lowered (max. -24 dB). The TALK ON button activates the talkover function.
2.3 PFL section (Pre-Fader Listening)
The PFL signal is a pre-fader headphones signal, enabling you to pre-listen to a signal source without
effecting the main signal.
The PFL LEVEL control sets the volume of the headphone signal.
The PFL MIX control lets you fade between channels 1 and 2 when the PFL MODE switch (see below)
is set to STEREO.
It the PFL MODE switch is set to SPLIT, the channels are strictly separated: channel 1 will be heard on
the left side, channel 2 on the right. In this mode, the MIX control has no influence on the PFL signal.
3D surround function
The built-in QRS effect
widens the stereo image and adds life and transparency to your sound—an easy
way to put a unique final polish on your music and turn your performance into an incomparable experience. The
SURROUND control determines the intensity of the effect, which can be turned on and off via the ON button.
2.5 Beat counter
The PRO MIXER VMX300’s built-in beat counter is an extremely useful feature, allowing smooth crossfades
between two tracks—an important key to the success of your performance. The beat counter analyzes and
displays the tempi of your tracks in BPM (Beats Per Minute). The beat counter sections of channel 1 and 2 are
The tempo of the track is shown in the respective channel’s DISPLAY (
). In the case of multiple tempo
changes, the display would change continuously, causing unnecessary confusion and rendering the function
virtually useless. Enter the SYNC LOCK button (
): with it, you can limit the range of possible tempo values
within a song. Pressing this button once the counter has “caught” and displayed a realistic value will simplify
things. The BEAT ASSIST button (
) allows you to set the beat counter’s tempo manually, similar to
“tap tempo”. Pressing the button three times in time with the track will set the beat counter and its display at
that tempo. The BEAT ASSISST and SYNC LOCK buttons are each equipped with an LED to show that the
respective function is activated.
Once the tempo of the two tracks have been determined and locked with the SYNC LOCK or BEAT ASSIST
buttons, the tempo difference between channel 1 and 2 will be depicted via the 9-segment TEMPO DIFFERENCE
LED display (
). It shows the degree of the tempo difference by a respective deflection to the right (channel
2 track is faster) or to the left (channel 2 track is faster). The center LED lights when the tempi are equal. The
synchronization of channel 1 and 2 is shown in the TIME OFFSET LED display (
) below the TEMPO
DIFFERENCE display. When the center LED is lit, the tracks are in sync with each other. When the display
moves to the left or right, the corresponding channel is running out of sync. The TEMPO DIFFERENCE and
TIME OFFSET displays are only active when the tempi of both channels have been locked as explained above.
To exit the SYNC LOCK or BEAT ASSIST mode, simply press the SYNC LOCK key in both channels again.
2.6 Crossfader section
The CROSSFADER is used to fade between channels 1 and 2. Like the channel faders, the crossfader
section is equipped with a 45-mm VCA-controlled fader.
The REVERSE switch (TAP/HOLD) enables you to invert the direction of the crossfader, so that you can
quickly switch from channel 1 to channel 2. This effect is created by simply pushing the REVERSE
switch down (TAP)—as soon as it is released, it returns to its original position and your crossfade
setting (and your music) is at it was before. Pressed upwards, the switch locks into the reversed
position (HOLD). To reset it, simply push it downwards.
The CROSSFADER CURVE control in the crossfader section is similar to the CURVE switches in the
input channels (see
). The control allows you to fade between the various crossfader curve modes.
The KILL switches (TAP/HOLD) enable you to attenuate the three frequency bands (LOW, MID and
HIGH) by -32 dB with a single press. Like the REVERSE switch, the switches lock in the upward
position (KILL HOLD), and must be held in the downward position (KILL TAP). With other DJ mixers, the
kill switches override the channel EQ’s. The VMX3000 is unique in that the kill switches supplement the
channel EQ’s, allowing extreme attenuation of the respective frequency band. The left-side KILL switches
are assigned to channel 2, the right-side switches to channel 3. There are no KILL switches for channel 1.
The MIC INPUT connector is a balanced ¼" TRS socket for microphone connection.
We strongly recommend the use of high-grade cables and connectors for the transmission of
audio signals. Inferior quality materials cannot supply acceptable audio quality or corrosion
The PHONES OUT socket allows you to connect your headphones for pre-listening (PFL signal). For
best results, use headphones with an impedance rating of at least 32 Ohms.
With the exception of MIC INPUT and HEADPHONES, all of the VMX300’s audio connections are located on
the rear panel and supplied as RCA connectors.
Fig 3.1: Rear view of the PRO MIXER VMX300
The PHONO inputs for all three channels are primarily intended for turntable connection (see PHONO/
LINE switch below).
The LINE inputs may be used for connecting tape decks, CD or MD players etc.
The GND connection allows grounding of a turntable.
The PHONO/LINE switch on channel 1 allows you to select either the PHONO or LINE inputs. Be sure
to set the MIC/PHONO-LINE switch on the front panel to the PHONO-LINE position.
The PHONO/LINE switches on channels 2 and 3 allow you to set the input sensitivity of the PHONO
inputs to line level, so that they can also be used for connection of tape decks, CD or MD players etc.
The VMX300 is equipped with an effects loop for external effects devices. The SEND output sends the
PFL signal to a connected device, e.g. a reverb unit.
The resulting effect signal can be input to the MAIN OUT section via the RETURN input. The effect level
must be adjusted on the external effects unit. The RETURN input can also be used as an extra input for
connection of an additional signal source (e.g. sampler)—also in this case the level must be set on the
external device.
If an external effects unit is connected via the VMX300’s effect loop, the selected PFL signal is
sent to the unit. If you change the PFL section setting, e.g. to pre-listen to another channel,
that signal will be sent to the effects unit—the effect signal of a different track will be mixed to
your MAIN OUT signal. Remember: the effects unit gets its signal from the PFL section (see
Use the AMP output to connect the VMX300 to an amplifier. The level is controlled by the OUT A control
in the MAIN OUT section.
The BOOTH output offers a connection for an additional amplifier and/or loudspeaker system. The level
is controlled by the OUT B control in the MAIN OUT section.
In order to avoid power-up thumps, which can damage your loudspeakers, please power up
your amplifier last. There should be no signal present, e.g. no music playing, when you turn
on your amp. In addition, we suggest that you set all volume-related controls to “zero” (down)
before powering up your system. Following these precautions will save you from unpleasant
and potentially dangerous surprises.
The TAPE output enables you to record your performance by connecting a tape deck, DAT recorder etc.
Unlike the AMP and BOOTH outputs, the TAPE level is fixed, so that you have to adjust the input level
on the recorder.
The POWER ON switch turns on the PRO MIXER.
FUSE HOLDER/VOLTAGE SELECTOR. Before you connect the equipment to an AC outlet, please be
sure that the voltage displayed corresponds with your local AC voltage. If you should need to replace the
fuse, be sure to replace it with one of the same type and value. Some units allow you to switch between
230 V and 115 V by rotating the fuse holder.
To operate the unit at 115 V, you must install a fuse with a higher ampere rating.
This is the socket for the power cable. The impulse behavior of any given amplifier circuit depends
largely upon the power supply’s inherent reserves. All mixers contain numerous operational amplifiers
(op-amps) for processing line-level signals. Due to the restricted performance of their power supplies,
many mixers show “stress symptoms” when used under extreme conditions, resulting in inferior audio
quality. Thanks to its generously proportioned power supply, this will never happen to your VMX300: The
sound will always be clear, transparent and powerful.
SERIAL NUMBER. Please take the time to fill out and return the warranty card within 14 days after the
date of purchase. This will entitle you to all the benefits of our extended warranty. Alternatively, you can
register online at
Mic input
Phono inputs 1, 2 and 3
Line inputs 1, 2 and 3
46 dB gain, servo-balanced
40 dB gain @ 1 kHz, unbalanced
0 dB gain, unbalanced
0 dB gain, unbalanced
Main Out
Booth Out
Tape Out
max. +21 dBu @ +5 dBU (Line In)
max. +13 dBu
typically 0 dBu
typically 0 dBu
typically 125mW @ 1 % THD
Stereo Low
Stereo Mid
Stereo High
Kill Low
Kill Mid
Kill High
+12 dB/-32 dB @ 50 Hz
+12 dB/-32 dB @ 1,2 Hz
+12 dB/-32 dB @ 10 kHz
-54 dB @ 50 Hz
-44 dB @ 1 kHz
-26 dB @ 10 kHz
Signal-to-noise ratio (S/N)
Distortion (THD)
Frequency response
Input gain adjustment
> 85 dB (Line)
> 77 dB (Line)
< 0,05%
20 Hz - 20 kHz
-20 dB - +9 dB
AC voltage
Dimensions (H x W x D)
120 V ~, 60 Hz, fuse T 500 mA H
240 V ~, 50 Hz, fuse T 315 mA H
230 V ~, 50 Hz, fuse T 315 mA H
approx. 3 1/2" (88 mm) x 9 1/2" (241 mm) x 13 1/10" (332 mm)
approx. 3.5 kg (7 lbs. 4 oz)
BEHRINGER is constantly striving to maintain the highest professional standards. As a result of these efforts, modifications may
be made from time to time to existing products without prior notice. Specifications and appearance may differ from those listed or
To be protected by the extended warranty, the buyer must
complete and return the enclosed warranty card within 14 days
of the date of purchase to BEHRINGER Spezielle Studiotechnik
GmbH, in accordance with the conditions stipulated in § 3. Failure
to return the card in due time (date as per postmark) will void any
extended warranty claims.
Based on the conditions herein, the buyer may also choose to
use the online registration option via the Internet
( or
1. BEHRINGER (BEHRINGER Spezielle Studiotechnik GmbH
including all BEHRINGER subsidiaries listed on the enclosed page,
except BEHRINGER Japan) warrants the mechanical and
electronic components of this product to be free of defects in
material and workmanship for a period of one (1) year from the
original date of purchase, in accordance with the warranty
regulations described below. If the product shows any defects
within the specified warranty period that are not due to normal
wear and tear and/or improper handling by the user, BEHRINGER
shall, at its sole discretion, either repair or replace the product.
2. If the warranty claim proves to be justified, the product will be
returned to the user freight prepaid.
3. Warranty claims other than those indicated above are expressly
1. To obtain warranty service, the buyer (or his authorized dealer)
must call BEHRINGER (see enclosed list) during normal business
hours BEFORE returning the product. All inquiries must be
accompanied by a description of the problem. BEHRINGER will
then issue a return authorization number.
2. Subsequently, the product must be returned in its original
shipping carton, together with the return authorization number to
the address indicated by BEHRINGER.
3. Shipments without freight prepaid will not be accepted.
1. Warranty services will be furnished only if the product is
accompanied by a copy of the original retail dealer’s invoice.
Any product deemed eligible for repair or replacement by
BEHRINGER under the terms of this warranty will be repaired or
replaced within 30 days of receipt of the product at BEHRINGER.
2. If the product needs to be modified or adapted in order to
comply with applicable technical or safety standards on a national
or local level, in any country which is not the country for which
the product was originally developed and manufactured, this
modification/adaptation shall not be considered a defect in
materials or workmanship. The warranty does not cover any
such modification/adaptation, irrespective of whether it was
carried out properly or not. Under the terms of this warranty,
BEHRINGER shall not be held responsible for any cost resulting
from such a modification/adaptation.
3. Free inspections and maintenance/repair work are expressly
excluded from this warranty, in particular, if caused by improper
handling of the product by the user.
This also applies to defects caused by normal wear and tear, in
particular, of faders, potentiometers, keys/buttons and similar
4. Damages/defects caused by the following conditions are not
covered by this warranty:
s misuse, neglect or failure to operate the unit in compliance
with the instructions given in BEHRINGER user or service
s connection or operation of the unit in any way that does not
comply with the technical or safety regulations applicable in
the country where the product is used.
s damages/defects caused by force majeure or any other
condition that is beyond the control of BEHRINGER.
5. Any repair or opening of the unit carried out by unauthorized
personnel (user included) will void the warranty.
6. If an inspection of the product by BEHRINGER shows that the
defect in question is not covered by the warranty, the inspection
costs are payable by the customer.
7. Products which do not meet the terms of this warranty will be
repaired exclusively at the buyer’s expense. BEHRINGER will
inform the buyer of any such circumstance. If the buyer fails to
submit a written repair order within 6 weeks after notification,
BEHRINGER will return the unit C.O.D. with a separate invoice
for freight and packing. Such costs will also be invoiced
separately when the buyer has sent in a written repair order.
This warranty is extended exclusively to the original buyer
(customer of retail dealer) and is not transferable to anyone
who may subsequently purchase this product. No other person
(retail dealer, etc.) shall be entitled to give any warranty promise
on behalf of BEHRINGER.
Failure of BEHRINGER to provide proper warranty service shall
not entitle the buyer to claim (consequential) damages. In no
event shall the liability of BEHRINGER exceed the invoiced value
of the product.
1. This warranty does not exclude or limit the buyer’s statutory
rights provided by national law, in particular, any such rights
against the seller that arise from a legally effective purchase
2. The warranty regulations mentioned herein are applicable
unless they constitute an infringement of national warranty law.
The information contained in this manual is subject to change without notice. No part of this manual may be reproduced or
transmitted in any form or by any means, electronic or mechanical, including photocopying and recording of any kind, for any
purpose, without the express written permission of BEHRINGER Spezielle Studiotechnik GmbH.
BEHRINGER is a registered trademarks. ALL RIGHTS RESERVED.
© 2001 BEHRINGER Spezielle Studiotechnik GmbH.
BEHRINGER Spezielle Studiotechnik GmbH, Hanns-Martin-Schleyer-Str. 36-38, 47877 Willich-Münchheide II, Germany
Tel. +49 (0) 21 54 / 92 06-0, Fax +49 (0) 21 54 / 92 06-30
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