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MX-880
U S E R
I N S T R U C T I O N S
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This booklet contains important information concerning the proper and safe operation of your new product.
SPLITTER
MAIN INPUT LEVEL
0
MAIN LINK
+15
dB
+12
+9-6
-20
MIXER
MAIN OUTPUT LEVEL
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
IN
OUT
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
0
+15
dB
+12
+9-6
-20
∞∞∞∞∞∞∞∞
UNiKA
MX-880
PRO 8-CHANNEL
SPLIT TER / MIXER
POWER
654321
-24 -12
0 +6
-24 -12
0 +6
INPUT LEVEL
dB
( )
OUTPUT LEVEL
dB
( )
-24 -24 -24 -24 -24 -24
-18 -18 -18 -18 -18 -18
-12 -12 -12 -12 -12 -12
-6 -6 -6 -6 -6 -60 0 0 0 0 0+6 +6 +6 +6 +6 +6
+12 +12 +12 +12 +12 +12
+18 +18 +18 +18 +18 +18
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
MIXER/
DISTRIBUTION AMPLIFIER
MX-880 SAFETY INSTRUCTIONS
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CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To reduce the risk of electrical 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 electrical
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 manual.
!
!
DETAILED SAFETY INSTRUCTIONS:
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.).
Ventilation: 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.
Heat: The appliance should be situated away from heat sources such as radiators, heat registers, stoves,
or other appliance (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.
Cleaning: 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.
Object and Liquid Entry: Care should be taken so that objects do not fall and liquids are not spilled into
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
Objects have fallen, or liquid has been spilled into 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.
Servicing: The user should not attempt to service the appliance beyond that is described in the
Operating Instructions. All other servicing should be referred to qualified service personnel.
-1-
www.unika.com.tw
The MX-880 of UNiKA line mixer / distribution amplifier allows to connect 6 channels of
XLR and 2 channels of 1/4” TRS inputs and mixed down into L/R stereo outputs; and
vice versa, as a distribution amplifier, it passes the distribution of mono and stereo
balanced audio signals to multiple destinations has many applications including multi-
zone sound reinforcement installations, live sports events coverage, broadcast
studios, video suites, duplication or indeed anywhere high quality audio has to be
distributed to a number of locations down long cable runs.
FEATURES
Configurable 8 channels line input/stereo output mixer or stereo input / 8 channel
outputs distribution amplifier
Main stereo L/R inputs & outputs with level controls and XLR connectors.
XLR connectors on inputs & outputs CH1 to CH4; stereo Main input and Main output.
1/4” TRS connectors on inputs & outputs CH5 & CH6.
Main link switch on mixer's main stereo output channel.
Splitter/mixer switch on each channel from CH.1 to 6
LED level metering on each channel
44mm(high) x 482mm(wide) x 171mm(deep)
2.3kg
INTRODUCTION
-2-
Introduction ｜ Features ｜ Warnings ｜ Front Panel ｜ Rear Panel ｜ Operation ｜ Application Samples ｜ Specifiction
MX-880
SPLITTER
MAIN INPUT LEVEL
0
MAIN LINK
+15
dB
+12
+9-6
-20
MIXER
MAIN OUTPUT LEVEL
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
IN
OUT
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
LEFT
RIGHT
LEVEL
SPLIT/MIX
BALANCE/PAN
MIXER
SPLITTER
0
+15
dB
+12
+9-6
-20
0
+15
dB
+12
+9-6
-20
∞∞∞∞∞∞∞∞
UNiK A
MX-880
PRO 8- CHA NNE L
SPLIT TER / MIXER
POWER
654321
-24 -12
0 +6
-24 -12
0 +6
INPUT LEVEL
dB
( )
OUTPUT LEVEL
dB
( )
-24 -24 -24 -24 -24 -24
-18 -18 -18 -18 -18 -18
-12 -12 -12 -12 -12 -12
-6 -6 -6 -6 -6 -60 0 0 0 0 0+6 +6 +6 +6 +6 +6
+12 +12 +12 +12 +12 +12
+18 +18 +18 +18 +18 +18
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
INPUT OUTPUT LEVEL
dB
( )
1
3
6 9
2
5
FRONT PANEL
The MX-880 has six identical channels, each one is equipped with 2 rotary controls,
1 button and 8 LED indicators, also the same on the main control section (in/out),
please see details as below:
1. POWER: Press this button to turn the MX-880 on and off.
2. MAIN INPUT LEVEL: The main input level control sets the main input gain, before the
signal reaches the input bus. In SPLIT mode, the MAIN INPUT LEVEL control determines
the common output level for all mono outputs.
3. INPUT LEVEL: From this 4-digit input level meter is allowed to know the input level of the
main input within a range from -24dB to +6dB.
4. MAIN LINK: While press this main link switch you can route the MAIN INPUT signal to
the MAIN OUTPUT. This way it is possible to route a maximum of 8 input channels to the
main mix.
5. MAIN OUTPUT LEVEL: The main output level control adjusts the output level applied to
the main outputs. The levels present at the 6 mono outputs are not affected. Summing the
signal levels of several mono channels can overload the main output stage. The MAIN
OUTPUT LEVEL control is therefore used to adjust the overall output level.
6. OUTPUT LEVEL: From this 4-digit output level meter is allowed to know the output level
of the main input within a range from -24dB to +6dB.
7. SPLIT/MIX: This switch sets the respective channel to SPLITTER or MIXER mode.
8. LEVEL: The level control determines the signal level of the individual channels. In SPLIT
mode, the LEVEL control sets the output level of the mono channels. In MIX mode,it
controls the amount of the mono channel's input signal feeding into the main output
section; at the same time, the level of the mono channel can be determined, the
maximum gain is +15dB which allows for mode converting.
9. INPUT/OUTPUT LEVEL: In SPLIT mode, this 8-digit output level meter is allowed to
know the output level of each channel within a range from -24dB to +18dB; In MIX mode,
it shows the input level of each channel within the same range.
10. BALANCE/PAN: This control sets the balance between the left and right main signals. In
SPLIT mode, the main input signal is routed to the mono output, with the balance control
determining the balance between the left and right main signal portions. In MIX mode, the
mono inputs are mixed and routed via the level control to the main outputs, with the PAN
controls determining the allocation of the mono inputs to the left and right main outputs.
4 7
10
8
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-3-
Introduction ｜ Features ｜ Warnings ｜ ｜ Rear Panel ｜ Operation ｜ Application Samples ｜ SpecifictionFront Panel
MX-880
REAR PANEL
11. MONO OUTPUTS (CH5 & CH6): These are the mono outputs, acceptbalanced 1/4” TRS
connectors.
12. MONO INPUTS (CH5 & CH6): These are the mono inputs, acceptbalanced 1/4” TRS
connectors.
13. MONO OUTPUTS (CH1~CH4): These are the mono outputs, accept balanced XLR
connectors.
14. MONO INPUTS (CH1~CH4): These are the mono inputs, accept balanced XLR connectors.
15. MAIN OUTPUTS: These are the main outputs, accept balanced XLR connectors. They
may be fed either by the left and right main inputs or by any of the six mono inputs (or a
combination of both).
16. MAIN INPUTS: These are the main inputs, accept balanced XLR connectors. They may
be fed the mono outputs of all channels which are operated in SPLIT mode.
17. AC INLET: The voltage requirement accepts 110~240V, 60~80Hz, Please make sure that
your local voltage matches this range as indicated on the rear panel.
CH 4 OUT MAIN OUT R MAIN IN RCH 4 IN MAIN OUT L MAIN IN L
CH 6 OUT CH 6 IN CH 5 OUT CH 5 IN
AC INPUT
50/60Hz
Serial No.:
Fuse
250V
T1.6A
11
12
15 16 1713 14
OPERATION
MAIN Section
Both main inputs interface via the main input level control with the input bus as well as with
the main outputs. The main output level control determines the output level of the signals
which are summed by the second bus (i.e. the output bus) and are subsequently routed to
the main outputs.
SPLIT Mode
In SPLIT mode, the main input signal is sent via the balance control to the output buffer
amplifiers of the mono channels, with the level control determining the output level of the
respective channel. The maximum gain is +15dB.
MIX Mode
In MIX mode, the input signals of the mono channels are “collected” via the LEVEL and PAN
controls and are routed to the output bus. In this mode, the LEVEL control determines the
amount of each channel at the output bus, while the PAN control is responsible for the
allocation of the input signal to the left and right main outputs.
Additionally, the input signal is routed to the respective mono outputs, i.e. the circuit acts as
a matching amplifier. The LEVEL control allows for level compensation of up to +15dB.
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-4-
Introduction ｜ Features ｜ Warnings ｜ Front Panel ｜ ｜ Application Samples ｜ SpecifictionRear Panel ｜ Operation
MX-880
-5-
APPLICATION SAMPLES
1. Application as a mixer
When the mono channels are operated in MIX mode, a maximum of 8 (6+2) mono input
signals can be summed and routed to the main outputs. In this mode, the individual signal
sources are connected to the mono inputs on the MX-880. Each channel has a LEVEL knob
to control the amount of its signal relative to others in the main section. Via the
corresponding PAN control, each mono input signal can be routed either to the left or right
main output, also any intermediate PAN settings can be achieved as well. The MAIN
OUTPUT LEVEL control determines the overall level of the main output signal. Since the
two main inputs are alternatively routable to the main outputs, two additional input signals
can be added using the main inputs. For this you have to depress the MAIN LINK switch.
However, as these inputs do not feature a PAN control, the left main input will always be
routed to the left main output; similarly, the right main input can only be sent to the right
main output. A total of 8 mono channels can thus be routed to two main outputs.
2. Application as a splitter
A splitter is a distribution amplifier which allows for splitting a specific input signal to several
outputs. This function is of use, e.g. in a large-scale sound reinforcement system where the
mixer's output signal needs to be allocated to several power amplifiers. Another field of
application is in tape duplication systems, where one master tape machine is to be
interfaced with several tape duplication recorders.
In this mode, the output signal from the mixer is applied to the main inputs of the MX-880. If
the SPLIT/MIX switches are set to “SPLIT”, the mono outputs of the respective channels
provide either the left or the right main signal. Depending on the setting of the BALANCE
control, any balance between left and right main signal can be adjusted.
At the same time, the main input signal is also sent to the left or right main output, so that
here two additional splitter outputs are available. Please note that these outputs do not
feature a balance routing function. The left main input is routed exclusively to the left main
output; similarly, the right main input feeds the right main output only.
3. Application as a 4-channel stereo splitter
For this special application, the splitter function configures the unit as a 4-channel stereo
splitter. Here, the stereo signal source is connected to the two main inputs. If all mono
channels are operated in SPLIT mode, the BALANCE controls of channels 1, 3, and 5 are
set to “LEFT”, and the BALANCE controls of channels 2, 4, and 6 to “RIGHT”; thus, the
corresponding stereo output pairs are routed through channels 1+2, 3+4, and 5+6. This kind
of application is particularly useful for tape duplication systems.
4. Application as a matching amplifier
The MX-880 can also be used as a multiple matching amplifier. The task of a matching
amplifier is to convert the level of a signal source into another level. For instance, a cassette
recorder with home recording level (-10dBV) can be raised to studio level (+4dBu).
Of course, this process can also be reversed (level attenuation).
In this application, the MX-880 is operated in MIX mode. The output of the signal source is
connected to the mono input of the MX-880. The corresponding mono output provides the
resulting output signal which can be raised or lower in level. Each of the six mono channels
is equipped with a LEVEL control. The control range is from -∞ (full attenuation) to a
maximum gain of +15dB.
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Introduction ｜ Features ｜ Warnings ｜ Front Panel ｜ Rear Panel ｜ Operation ｜ ｜ SpecifictionApplication Samples
MX-880
Introduction ｜ Features ｜ Warnings ｜ Front Panel ｜ Rear Panel ｜ Operation ｜ Application Samples ｜ Specifiction
-6-
Input Connectors
Input Impedance
Nominal Operating Level
Maximum Input Level
Output Connectors
Output Impedance
Maximum Output Level
Frequency Response
Signal To Noise Ratio
Total Harmonic Distortion
Dimensions (H×W×D)
Weight
Rack Space
MX-880
XLR & 1/4” TRS
40KΩ Balanced
20KΩ Unbalanced
-10dB - +4dB
+21dB Balanced & Unbalanced
XLR & 1/4” TRS
1.2KΩ Balanced 600Ω Unbalanced
+22dB Balanced & Unbalanced
5Hz – 200KHz ±3dB
>95dB, Unweighted, 22Hz – 22KHz
0.002% typical @+4dBu, 1KHz, Gain 1
44 x 483 x 171mm
2.3kg
1U
SPECIFICTION
www.unika.com.tw
MX-880
/