MicroMix 1 USB
mixer
user manual
Musikhaus Thomann
Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
E-mail: info@thomann.de
Internet: www.thomann.de
30.11.2020, ID: 424895
Table of contents
Table of contents
1 General information................................................................................................................................. 4
1.1 Further information........................................................................................................................... 5
1.2 Notational conventions.................................................................................................................... 6
1.3 Symbols and signal words............................................................................................................... 6
2 Safety instructions..................................................................................................................................... 8
3 Features....................................................................................................................................................... 11
4 Installation and starting up................................................................................................................ 12
5 Connections and controls................................................................................................................... 13
6 Technical specications....................................................................................................................... 18
7 Plug and connection assignment.................................................................................................... 20
8 Protecting the environment.............................................................................................................. 24
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General information
1 General information
This manual contains important instructions for the safe operation of the unit. Read and follow
the safety instructions and all other instructions. Keep the manual for future reference. Make
sure that it is available to all those using the device. If you sell the unit please make sure that
the buyer also receives this manual.
Our products are subject to a process of continuous development. Thus, they are subject to
change.
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1.1 Further information
General information
On our website (www.thomann.de) you will nd lots of further information and details on the
following points:
Download This manual is also available as PDF le for you to download.
Keyword search
Online guides
Personal consultation For personal consultation please contact our technical hotline.
Service
Use the search function in the electronic version to nd the topics of
interest for you quickly.
Our online guides provide detailed information on technical basics
and terms.
If you have any problems with the device the customer service will
gladly assist you.
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General information
1.2 Notational conventions
This manual uses the following notational conventions:
Letterings
The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
1.3 Symbols and signal words
In this section you will nd an overview of the meaning of symbols and signal words that are
used in this manual.
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General information
Signal word Meaning
DANGER! This combination of symbol and signal word indicates an
immediate dangerous situation that will result in death or
serious injury if it is not avoided.
CAUTION! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in minor injury if it
is not avoided.
NOTICE! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in material and
environmental damage if it is not avoided.
Warning signs Type of danger
Warning – danger zone.
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Safety instructions
2 Safety instructions
Intended use
8
This device is intended to be used for amplication, mixing and playback of signals from
musical instruments and microphones. Use the device only as described in this user manual.
Any other use or use under other operating conditions is considered to be improper and may
result in personal injury or property damage. No liability will be assumed for damages resulting
from improper use.
This device may be used only by persons with sucient physical, sensorial, and intellectual
abilities and having corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is responsible for their safety.
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Safety
Safety instructions
DANGER!
Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are not
within reach of babies and young children. Choking hazard!
Ensure that children do not detach any small parts (e.g. knobs or the like) from
the unit. They could swallow the pieces and choke!
Never let children unattended use electrical devices.
CAUTION!
Possible hearing damage
With loudspeakers or headphones connected, the device can produce volume
levels that may cause temporary or permanent hearing impairment.
Do not operate the device permanently at a high volume level. Decrease the
volume level immediately if you experience ringing in your ears or hearing
impairment.
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Safety instructions
NOTICE!
Operating conditions
This device has been designed for indoor use only. To prevent damage, never
expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and
strong vibrations.
NOTICE!
Danger of short circuit
Switching on phantom power will damage the device if unbalanced XLR cables
are connected.
Only turn on phantom power when exclusively balanced XLR cables are con‐
nected.
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3 Features
Features
n 2-channel mixer
n 2 × mono channel with XLR / 1/4" combo socket (MIC / Line), gain adjustment, 2-band EQ
and pan control
n 18 V phantom power globally switchable
n Channel 2 also suitable for direct instrument connection
n Headset with headphone and microphone connectable (3.5 mm jack)
n 1 × stereo RCA output
n USB port for use as an audio interface
n Power supply via USB port
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Installation and starting up
4 Installation and starting up
Unpack and carefully check that there is no transportation damage before using the unit. Keep
the equipment packaging. To fully protect the device against vibration, dust and moisture
during transportation or storage use the original packaging or your own packaging material
suitable for transport or storage, respectively.
Establish all connections as long as the unit is switched o. Use the shortest possible highquality cables for all connections.
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5 Connections and controls
Connections and controls
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Connections and controls
1 [USB TO COMPUTER]
USB port for connection to a computer for use as an audio interface as well as for power supply.
2 [MIC TO CH 1]
To connect the microphone when using a headset, signal processing via channel 1.
3 [MONITOR - HEADSET]
To connect the headphone when using a headset.
4 [PHANTOM]
Turns the phantom power on and o for condenser microphones on the XLR inputs. The LED above the switch is lit when
the phantom power is activated.
5 [POWER]
The LED lights up once the unit is powered.
6 [USB playback]
When the switch is pressed, the USB input signal is assigned to the ‘MONITOR’ output, otherwise to the ‘MAIN MIX’
output.
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Connections and controls
7 [MONITOR]
Volume control for the Monitor output.
8 [L - CLIP - R]
The ‘L’ or ‘R’ LED lights up green when a signal is present in the respective bus side. It lights up red when overload occurs
in the respective bus side. Then lower the input levels that possibly cause the overload or turn the ‘MAIN MIX’ control
counterclockwise.
9 [PEAK]
This LED lights up on overload in channel 2. If this happens, turn the [GAIN] switch to the LOW position.
10 [MAIN MIX]
Volume control for the ‘MAIN MIX’ output and the USB port.
11 [CH 2]
Level control for the signals at input ‘CH2’ .
12 [CH1]
Level control for the signals at input ‘CH1’ .
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Connections and controls
13 [PEAK]
This LED lights up on overload in channel 1. If this happens, turn the [GAIN] control counterclockwise until the LED goes
out.
14 [HIGH - LOW - PAN]
Tone and pan control for channel ‘CH1’ . Slide the ‘HIGH’ control up or down to raise or lower the treble. Slide the ‘LOW’
control up or down to raise or lower the bass. Slide the ‘PAN’ control up or down to move the signal source further to the
left or right in the stereo panorama.
15 [HIGH - LOW - PAN]
Tone and pan control for channel ‘CH2’ . Slide the ‘HIGH’ control up or down to raise or lower the treble. Slide the ‘LOW’
control up or down to raise or lower the bass. Slide the ‘PAN’ control up or down to move the signal source further to the
left or right in the stereo panorama.
16 [GAIN]
Control to adjust the sensitivity of the input ‘CH1’ .
17 [GAIN]
Switch for selecting the sensitivity of input ‘CH2’ between LOW (switch pressed = low sensitivity) and HIGH (switch not
pressed = high sensitivity).
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Connections and controls
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Switch for changing the input impedance. When directly connecting a high-impedance instrument such as an electric
guitar or bass, push the switch to the GUITAR position.
19 [CH 1 INPUT]
Balanced XLR / 1/4" phone jack input for connecting a microphone (XLR) or a line level signal source (1/4" phone jack).
The XLR socket can provide phantom power for connecting condenser microphones. Never turn on the phantom power
when unbalanced cables are connected to this socket.
20 [CH 2 INPUT]
Balanced XLR / 1/4" phone jack input for connecting a microphone (XLR), a line level signal source or a guitar (1/4" phone
jack). The XLR socket can provide phantom power for connecting condenser microphones. Never turn on the phantom
power when unbalanced cables are connected to this socket. Connect guitars only using unbalanced instrument cables,
otherwise the device will not work correctly.
21 [MAIN MIX]
Stereo RCA output for the nal signal mix of the device. Here you can connect a power amp, powered speakers or a
recording device.
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Technical specications
6 Technical specications
Sensitivity / impedance Channel 1 & 2, XLR 2 mV / 1.8 kΩ (gain @ max.)
Channel 1, 1/4" phone
jack
Channel 2, 1/4" phone
jack
Output level Main & monitor 5.8 V (max.)
Frequency response 20 Hz ~ 22 kHz
THD ≤ 0.05 %
Signal-to-noise ratio 80 dB (A-weighted)
EQ Bass ± 15 dB / 80 Hz
Treble ± 15 dB / 12 kHz
Impedance headphones output ≥ 16 Ω
10 mV / 12 kΩ (line)
30 mV / 20 kΩ (line), 30 mV / 240 kΩ (guitar)
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Technical specications
USB interface USB 1.1 compatible, 16 bit Delta-Sigma
Sampling rates: 44.1 kHz, 48 kHz
Phantom voltage +18 V
Voltage supply via computer (USB port) or USB mains adaptor 5 V / 500 mA
(not supplied)
Dimensions (W × H × D) 100 × 45 × 135 mm
Weight 430 g
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Plug and connection assignment
7 Plug and connection assignment
Introduction
Balanced and unbalanced trans‐
mission
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This chapter will help you select the right cables and plugs to connect your valuable equip‐
ment in such a way that a perfect sound experience is ensured.
Please note these advices, because especially in ‘Sound & Light’ caution is indicated: Even if a
plug ts into the socket, an incorrect connection may result in a destroyed power amp, a short
circuit or ‘just’ in poor transmission quality!
Unbalanced transmission is mainly used in semi-professional environment and in hi use.
Instrument cables with two conductors (one core plus shielding) are typical representatives of
the unbalanced transmission. One conductor is ground and shielding while the signal is trans‐
mitted through the core.
Unbalanced transmission is susceptible to electromagnetic interference, especially at low
levels, such as microphone signals and when using long cables.
In a professional environment, therefore, the balanced transmission is preferred, because this
enables an undisturbed transmission of signals over long distances. In addition to the conduc‐
tors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers
the signal, but phase-shifted by 180°.
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1/4" TS phone plug (mono,
unbalanced)
1/4" TRS phone plug (mono, bal‐
anced)
Plug and connection assignment
Since the interference aects both cores equally, by subtracting the phase-shifted signals, the
interfering signal is completely neutralized. The result is a pure signal without any noise inter‐
ference.
1 Signal
2 Ground, shielding
1 Signal (in phase, +)
2 Signal (out of phase, –)
3 Ground
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Plug and connection assignment
XLR plug (balanced)
XLR plug (unbalanced)
1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)
1 Ground, shielding
2 Signal
3 Bridged to pin 1
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Three-pole 1/8" mini phone jack
(stereo, unbalanced)
Plug and connection assignment
1 Signal (left)
2 Signal (right)
3 Ground, shielding
RCA connection
Drawing and table indicate the pin assignment of an RCA plug.
1 Signal
2 Ground, shielding
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Protecting the environment
8 Protecting the environment
Disposal of the packaging mate‐
rial
For the transport and protective packaging, environmentally friendly materials have been
chosen that can be supplied to normal recycling.
Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose of these materials with your normal household waste, but make sure that
they are collected for recycling. Please follow the notes and markings on the packaging.
Disposal of your old device
This product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE) in its currently valid version. Do not dispose with your normal household waste.
Dispose of this device through an approved waste disposal rm or through your local waste
facility. When discarding the device, comply with the rules and regulations that apply in your
country. If in doubt, consult your local waste disposal facility.
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Notes
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Notes
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Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de
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