Citronic CDM4:2USB Owner's Manual

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REF: 172.781

OWNER’S MANUAL

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The CDM4:2USB DJ Mixer

The CDM4:2USB offers unrivalled quality and features, designed to be used in a wide range of applications.
The CDM4:2USB offers a total of sixteen inputs including four microphone, two USB, four CD inputs, four Line
inputs and two video inputs, all via gold-plated RCA phono sockets. Microphones 1 and 2 have individual gain
controls, a shared 3-band EQ, individual effect select buttons, and On/Off/Talkover switch. There are a further 2
microphone inputs shared on channels 1 & 2 which are also switchable CD inputs.

The four music channels feature individual gain, 3-band EQ with -30dB cut, high quality 45mm faders, effect
select buttons and cue facility. These channels can be routed through the fully assignable 45mm rail glide fader,
which is easily replaceable. The CDM4:2USB also features a built in video switcher which allows connection
from the Citronic CD-1X dual CDG player, giving two inputs for connection of deck 1 & 2 and two outputs for
connection to TV monitors. The video switch will select whether deck 1 or deck 2 is output to the monitors.

The CDM4:2USB also has on-board effects, which are fully assignable to each microphone or music channel,
the effects featured are Delay and Repeat, ideal for giving the vocal depth. Other features of the CDM4:2USB
include 10-bar LED monitor for checking levels, a 12V BNC light socket as standard, the headphone section
features a headphone mix facility allowing the user to hear the master output, cue output or a mix of both. The
master output is via balanced XLR, or unbalanced via gold-plated RCA, there is also a separate Booth output
via gold-plated RCA with an individual level control on the front panel.

Inside the CDM4:2USB features SM Technology, this helps prevent unwanted noise, and channel bleed,
making this a superb mixer for any DJ.

Important Safety Information

Warnings:

All the safety and operating instructions should be read before the appliance is operated.
To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
To reduce the risk of electric shock, do not remove the cover (or back). There are no serviceable parts inside. Always

refer servicing to qualified service personnel.

Cautionary Notes:

Handle the power supply cord carefully. Do not damage or deform the power supply cord. If it is damaged or deformed,

it may cause electric shock or malfunction when used. When removing from wall outlet, be sure to remove by holding

the plug attachment and not by pulling the cord.
In order to prevent electric shock; do not open the top cover. If a problem occurs, contact your dealer.
Do not place metal objects or spill liquid inside the mixer. Electric shock or malfunction may result.
Any use of the controls, or any adjustment, or the performance of any procedure other than those specified herein may

result in serious damage to your health.
The mixer should not be opened or repaired by anyone except properly qualified service personnel.

General Do’s & Don’ts

There are a few general Do’s and Don’ts thoughts that you should become familiar with if you have not had a
great deal of experience with professional audio systems.
Cables & Connectors - Always use good quality cables and connectors. It might seem expensive when you first
look at it, but the first time you have a problem in front of an audience you’ll curse the day you didn’t make that
small investment. Over 34 years in the business has taught us that over 75% of all problems with DJ systems
are simple connector ones. Don’t get caught out.
Switching on your system - Get into the habit of turning on the mixer and all the inputs to it before you turn on
the amplifiers. The CDM4:2USB has been designed not to harm your amplifiers or speakers if you turn the
amplifiers on first, but this may not be true of the inputs plugged into the CDM4:2USB Mixer. Play safe; always
turn on your amplifiers last.
Power Supply - The power supply for your CDM4:2USB is built into the mixer and will be fitted with a mains plug
specifically for the mains supply in your country. If it does not match the power socket you wish to use check
with your dealer before you plug it in. It is possible you could damage your mixer if it is not the correct version
for your mains power supply. Worse still, it could be unsafe. Don’t take chances with Mains Power - it can kill.
Crossfader - The crossfader is the most used feature on your mixer and great care has been taken in the choice
of components for this function. Even so, it is the most likely thing to wear out first on your mixer, so we’ve made
it quick and easy to replace. Don’t get caught out, always carry a spare.

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Front Panel Illustration

Features & Functions Top Panel

1. Microphone 1 Input

An XLR balanced microphone input.

2. Microphone 1 Gain Control

This control adjusts the amount of gain on Mic 1

3. Microphone 1 Effect Select Button

This button activates the effects (21) on Mic 1

4. Microphone 2 Input

An XLR balanced microphone input

5. Microphone 2 Gain Control

This control adjusts the amount of gain on Mic 2

6. Microphone 2 Effect Select Button

This button activates the effects (21) on Mic 2

7. Microphone EQ Controls

Both microphone inputs share a 3 Band EQ stage prior to the ON AIR switch (8).

EQ Control ‘Lo’

This control allows 10dB of cut or boost to the low frequencies.

EQ Control ‘Mid’

This control allows 10dB of cut or boost to the mid frequencies.

EQ Control ‘Hi’

This control allows 10dB of cut or boost to the high frequencies.

8. On Air/Talkover Switch

Activates or de-activates both microphone inputs without the need to adjust the Gain controls. The
talkover will dip the music output by -20dB the music will return to normal when talkover is
switched off.

9. Input Select Switch

This control selects the input source for its respective channel. Channels 1 & 2 have a selectable
Mic or CD input, which can be set on the rear panel (34) channels 3 & 4 are Line or CD.

10. Input Gain Controls