Numark X1 USB User manual

24-BIT DIGITAL MIXER
 QUICKSTART GUIDE
ENGLISH ( 3 – 8 )
 GUÍA DE INICIO RÁPIDO
ESPAÑOL ( 10 – 15 )
 GUIDE D’UTILISATION SIMPLIFIÉ
FRANÇAIS ( 17 – 22 )
 GUIDA RAPIDA
ITALIANO ( 24 – 29 )
 KURZANLEITUNG
DEUTSCH ( 31 – 36 )

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INTRODUCTION
Welcome to the X1USB professional 2-channel mixer with USB. Whether you are mixing traditional audio sources,
such as turntables and CD players, or incorporating digital sources, such as laptops, the X1USB offers a variety of
analog and digital input options designed to meet the needs of the modern DJ. Here are some of the features that
you’ll love about the X1USB:
24-bit, noise-free digital mixing controls with Alesis technology
Sub-bass synthesis with intensity control
2 phono inputs (with phono defeat switch) and 2 line inputs
Microphone input witih 2-band EQ
2 USB connections, each assignable to input (for playing music from a computer) or output (for recording music
to a computer)
Smooth digital crossfader with reverse switch and continuous rotary slope control
Look-ahead peak-limiting on headphone and master outputs
3-band EQ with rotary kill and gain knobs on each channel
Mini-crossfader cueing
No software drivers needed with Windows XP or Mac OS X. Works with almost any Windows or Mac audio
recording or playback software.
We hope that the X1USB serves you well for many years to come.
Sincerely,
The People of Numark
BOX CONTENTS
X1USB
USB cable
AC Power Adapter
Quickstart Guide
Safety & Warranty Information Booklet
REGISTRATION
Please go to http://www.numark.com to register your X1USB. Registering your product ensures that we can keep you
up-to-date with any last-minute product developments and provide you with world-class technical support, should you
run into any problems.
GROUND RULES
1. Make sure all items listed in the BOX CONTENTS section are included in the box.
2. READ SAFETY & WARRANTY INFORMATION BOOKLET BEFORE USING THE PRODUCT.
3. Study the connection diagram in this guide.
4. Place mixer in an appropriate position for operation.
5. Make sure all devices are turned off and all faders and gain knobs are set to “zero”
6. Connect all stereo input sources as indicated in the diagram.
7. Connect the stereo outputs to power amplifier(s), tape decks, and/or other audio sources.
8. Plug all devices into AC power.
9. Switch everything on in the following order.
•Audio input sources (i.e. turntables, CD players, etc.)
•Mixer
•Last, any amplifiers or output devices
10. When turning off, always reverse this operation by,
•Turning off amplifiers
•Mixer
•Last, any input devices

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CONNECTION DIAGRAM
COMPUTER
CD PLAYERS
TURNTABLES
MICROPHONE
CD BURNER
TAPE DEC
K
HOUSE AMP
HEADPHONES
OR

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If you experience problems
when connecting the mixer
through a USB hub, we
recommend connecting the
mixer directly to your computer.
REAR PANEL FEATURES
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1. MIC INPUT – Connect a ¼” microphone to this input. Microphone controls are located on the top panel.
2. LINE | PHONO INPUTS (RCA) – Connect your audio sources to these inputs. These inputs can accept both
line and phono-level signals. (See #3.)
3. LINE | PHONO SWITCH – Flip this switch to the appropriate position, depending on the device connected to
the LINE | PHONO INPUTS. If you are using phono-level turntables, set this switch to “PHONO” to provide the
additional amplification needed for phono-level signals. If using a line-level device, such as a CD player or
sampler, set this switch to “LINE.”
4. GROUNDING TERMINAL – If using phono-level turntables with a grounding wire, connect the grounding wire
to these terminals. If you experience a low “hum” or “buzz”, this could mean that your turntables are not
grounded.
Note: Some turntables have a grounding wire built into the RCA connection and, therefore, nothing needs to be
connected to the grounding terminal.
5. LINE INPUTS (RCA) –Connect line-level devices, such as CD players, samplers or audio interfaces, to these
inputs.
6. RECORD OUTPUT (RCA) – Use standard RCA cables to connect this output to a recording device, such as a
CD recorder or tape deck. The level of this output is based upon pre-master levels.
7. MASTER OUTPUT (RCA) – Use standard RCA cables to connect this output to a speaker or amplifier system.
The level of this output is controlled by the MASTER knob on the top panel.
8. USB – These USB connections send and receive audio from a
connected computer. The functionality of each port (send or receive)
depends on the position of the corresponding USB SELECT switch.
For more information, refer to the USB OPERATION section below.
9. LINE | USB SWITCH – Flip this switch to select the audio input you
want. Selecting “LINE” will receive audio from the line inputs.
Selecting “USB” will receive audio from the USB (your computer).
10. USB SELECT – These switches determine the functionality of the USB ports.
USB 1:
RECORD – Outputs the Record mix to your computer for recording purposes.
CH1 – Sends incoming audio from your computer to mixer’s Channel 1 (you will need to set the
channel’s input selector switch to USB A).
USB 2:
MASTER – Outputs the Master (Program) mix to your computer for recording purposes.
CH2 – Sends incoming audio from your computer to mixer’s Channel 2 (you will need to set the
channel’s input selector switch to USB B).
11. AC IN – Use the included power adapter to connect the mixer to a power outlet. While the power is switched
off, plug the power supply into the mixer first, then plug the power supply into a power outlet.
Note: The mixer is designed to work with the included AC power supply only. Using an incompatible power
supply could result in damage to the unit.
12. POWER SWITCH – Turns the mixer on and off. Turn on the mixer after all input devices have been connected
and before you turn on amplifiers. Turn off amplifiers before you turn off the mixer.

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TOP PANEL FEATURES
1. POWER LED – Illuminates
when the mixer is on.
2. MIC GAIN – Adjusts the audio
level of the microphone signal.
3. MIC BASS – Adjusts the low
(bass) frequencies of the
microphone channel.
4. MIC TREBLE – Adjusts the
high (treble) frequencies of the
microphone channel.
Tip: If you experience
feedback when using a
microphone at loud levels, try
turning down the high
frequencies.
5. CHANNEL GAIN – Adjusts the
corresponding channel’s pre-
fader and pre-EQ gain level.
6. CHANNEL TREBLE – Adjusts
the high (treble) frequencies of
the corresponding channel.
7. CHANNEL MID – Adjusts the
mid-range frequencies of the
corresponding channel.
8. CHANNEL BASS – Adjusts
the low (bass) frequencies of
the corresponding channel.
9. INPUT SELECTOR – Selects
the input source to be routed
to the corresponding channel.
Input jacks are located on the
rear panel.
10. CHANNEL FADER – Adjusts
the audio level on the
corresponding channel.
11. HEADPHONE VOLUME – Adjusts the volume level of the headphone output.
12. HEADPHONES – Connect your ¼” headphones to this output for cueing and mix monitoring. Headphone
output controls are located on the top panel.
13. CUE SLIDER – Previews the audio playing on Channels 1 and 2. Sliding this to the left plays Channel 1.
Sliding to the right plays Channel 2.
14. CUE METER – Monitors the pre-fader audio level of Channels 1 and 2.
15. CUE MODE SELECTOR – Selects the audio that is sent to the headphones. Switch it to “MASTER” to hear
the Program mix. Switch it to “CH1 CH2” to hear Channels 1 and 2 in the Cue channel. (See #13).
16. CROSSFADER – Blends audio playing between Channels 1 and 2. Sliding this to the left plays Channel 1 and
sliding to the right plays Channel 2.
Note: The crossfader is user-replaceable if it should ever wear out. Simply remove the facepanel, then remove
the screws holding it in position. Replace the fader with a quality authorized replacement from your local
Numark retailer only.
17. CROSSFADER (CF) MODE – Reverses the assignment of Channels 1 and 2 on the crossfader.
18. CROSSFADER (CF) SLOPE – Adjusts the slope of the crossfader curve. Flip switch to the left for a smooth
fade (mixing) or to the right for a sharp cut (scratching).
19. MASTER – Adjusts the output volume of the Program mix.
20. STEREO LEVEL INDICATOR – Monitors the audio level of the Program mix.
21. SUB BASS – Adjusts the level of sub-harmonic (bass) frequencies of the Program mix.
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USB OPERATION
The X1USB is equipped with two USB ports which allow you to play content from your computer through the
mixer, or record audio from the mixer directly into your favorite software application. The USB interface on
your mixer works with your computer just like a standard USB sound card. In addition, the USB interface is
class-compliant, so there are no special drivers or software to install; simply connect a USB cable from either
or both USB ports to your computer and you are ready to go!
WINDOWS CONFIGURATION
1. Turn on your computer and the X1USB.
2. Use a USB cable to connect one (or both) ports of the X1USB to your computer.
3. Windows will immediately recognize the mixer as a “USB Audio Device” or “USB Audio CODEC” and will
automatically install any required system components.
To change system audio preferences in Windows, you will need to
access the Sounds and Audio Devices properties, located in the
Control Panel. To access audio device settings, click on the
Audio tab.
The first time you connect the X1USB to your computer, the mixer
will be automatically assigned as the Default (or “Preferred”)
Device for sound playback on your computer. All of your
computer’s sounds will be sent to the mixer channel indicated
above the USB connection.
Note: If you have connected both USB ports to your computer, the
ports will be numbered in the order they were connected. For
example, if you connected USB A before USB B, USB A will
appear as “USB Audio CODEC” and USB B will appear as “USB
Audio CODEC (2)”.
To send audio from your computer into the X1USB, select
“USB Audio CODEC” in the Sound Playback field. This
allows you to play audio from your computer into one of
either of the mixer channels, depending on which USB port
is used to make the connection.
To send audio from the X1USB to your computer, select
“USB Audio CODEC” in the Sound Recording field. This
allows you to record your mix into your computer.
Note: If your sound playback or recording application does not have its own audio input and output settings (for
example, Windows Sound Recorder, Windows Media Player or Apple iTunes), it will use the devices set in Sounds
and Audio Devices. Please note that these settings are loaded upon application startup, so if you change device
settings while the application is open, you will need to restart your application for the settings to take effect.
Tip: To prevent Windows from playing system sounds (beeps and bleeps) through the X1USB, we highly recommend
disabling these by clicking on the Sounds tab and selecting No Sounds from the pull-down menu.

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MAC CONFIGURATION
1. Turn on your computer and the X1USB.
2. Use a USB cable to connect one (or both)
ports of the X1USB to your computer.
3. Windows will immediately recognize the
mixer as a “USB Audio Device” or “USB
Audio CODEC”.
To change system audio preferences on a
Mac, you will need to access the Audio MIDI
Setup preferences located in Applications
 Utilities.
Note: If you have connected both USB ports to
your computer, the ports will be numbered in the
order they were connected. For example, if you
connected USB A before USB B, USB A will
appear as “USB Audio CODEC” and USB B will
appear as “USB Audio CODEC (2)”.
To send audio from your computer into the X1USB, select “USB Audio CODEC” in the Default Output field.
This allows you to play audio from your computer into one of either of the mixer channels, depending on which
USB port is used to make the connection.
To send audio from the X1USB to your computer, select “USB Audio CODEC” in the Default Input field. This
allows you to record your mix into your computer.
Tip: We recommend leaving the System Output field set to Built-in Output. This ensures that system sounds
(beeps and bleeps) will not sound through the mixer.
Note: If your sound playback or recording application does not have its own audio input and output settings (for
example, Apple iTunes), it will use the devices set in Audio MIDI Setup. Please note that these settings are loaded
upon application startup, so if you change device settings while the application is open, you will need to restart your
application for the settings to take effect.
USING BOTH USB PORTS SIMULTANEOUSLY
Since the X1USB has 2 USB ports, you can attach a different computer to each USB jack or you can connect both
jacks to a single computer. Each USB jack on the mixer will appear as a separate USB audio device to your
computer. You can play two audio files simultaneously from one computer and send both of those audio streams to
separate channels of your mixer by using two USB cables.
If you do this, we suggest using one of the many commercially available software programs that support multiple
sound cards.
However, if you don’t have software like that, you can use two separate software media players instead. To do this
you need to start the first media player, then change the Preferred Audio Device to the second USB port, then start
your second media player.
Note: Some applications (like Windows Media Player) will not allow you to have multiple instances running
simultaneously. When you try to open a second file, the first one will stop playing and the second file will be loaded.
To get around this, you can use different players to play the second file. For example, use Windows Media Player to
play channel 1, and Musicmatch Juke Box player for channel 2.
Note: Please keep in mind that not all media players will “remember” what sound card they were using at the time of
launch.

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SPECIFICATIONS
ANALOG I/O: Signal-to-Noise Ratio (unweighted): > 95dB @ 1kHz (full path)
Frequency Response: 20Hz – 20kHz (±0.1dB)
Total Harmonic Distortion: < 0.01%
USB I/O: Signal-to-Noise Ratio (JIS-A weighted): > 85dB
Frequency Response: 20Hz – 20kHz (±0.1dB)
Total Harmonic Distortion: < 0.02%
INPUTS: Analog: 2 phono / line
1 mic preamp (1/4”)
Digital: 2USB
OUTPUT: Analog: Master (RCA)
Record(RCA)
Headphone (1/4” stereo)
Digital: 2 selectable USB
(1 Master/Cue; 1 Record/Cue)

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