UNiKA MT-1000II ATI Pro Audio Amlipfier Instruction Manual
- June 5, 2024
- UNiKA
Table of Contents
MT-1000II ATI Pro Audio Amlipfier
Instruction Manual
This symbol is intended to alert the user to the presence of non-insulated
“dangerous voltage” within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to persons.
This symbol is intended to alert the user of the presence of important
operating and maintenance (servicing) instructions in the literature
accompanying the product.
CAUTION: Risk of the electrical shock – DO NOT OPEN!
CAUTION: To reduce the risk of electrical shock, do not remove the cover.
No user-serviceable parts inside. Refer all servicing to qualified service
personnel.
WARNING: To prevent electrical shock or fire hazards, do not expose this
amplifier to rain or moisture. Before using this amplifier read the user
manual for further warnings.
CAUTION
Do not open risk of electric shock
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER.
THERE ARE NO USER-SERVICEABLE PARTS INSIDE. REFER ALL SERVICES TO YOUR
AUTHORIZED DEALER.
The lightning flash with an arrow triangular symbol is intended to alert the
user to the presence of uninsulated “dangerous voltage” within the product’s
enclosure and may be of sufficient magnitude to constitute a risk of electric
shock.
The exclamation point triangular symbol is intended to alert the user to
the presence of important operating and maintenance (servicing) instructions
in the user manual accompanying the amplifier.
FOR OPTIMUM PERFORMANCE AND RELIABILITY DO NOT PRESENT THE AMPLIFIER WITH
A SPEAKER LOAD OF FEWER THAN 2 OHMS OR ANY COMBINATION OF SPEAKERS THAT
TOGETHER ARE LESS THAN 2 OHMS!
USING ONE SPEAKER, IT MUST BE RATED AT 4 OR MORE OHMS. USING TWO SPEAKERS,
THEY MUST RATE EACH AT 4 OR MORE OHMS.
USING THREE SPEAKERS, THEY MUST BE RATED EACH AT 8 OR MORE OHMS.
IMPORTANT PRECAUTIONS
- To reduce the risk of electrical shock or fire, do not expose this unit to rain or moisture.
- Do not spill water or other liquids into or onto your unit.
- Do not attempt to operate this unit if the power cord has been frayed or broken.
- Do not attempt to remove or break off the ground prong from the electrical cord. This prong is used to reduce the risk of electrical shock and f re in case of an internal short.
- Disconnect the main power before making any type of connection.
- Do not remove the cover under any conditions. There are no user-serviceable parts inside.
- Never plug this unit into a dimmer pack.
- Always be sure to mount this unit in an area that will allow proper ventilation. Allow about 6” (15cm) between this device and a wall.
- Do not attempt to operate this unit, if it becomes damaged.
- This unit is intended for indoor use only, use of this product outdoors voids all warranties.
- During long periods of non-use, disconnect the unit’s main power.
- Always mount this unit in a safe and stable manner.
- Power cords should be routed so they are not likely to be walked on, pinched by items placed upon or against them.
- Cleaning -The outside of the unit should be wiped down with a soft cloth and mild cleaner when needed.
- Heat -The amplifier should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
- The fixture should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibit a marked change in performance.
INTRODUCTION
Congratulations and thank you for purchasing the MT-1000II amplifier. This amplifier is a representation of UNiKA’s continuing commitment to producing the best and highest quality audio products at an affordable price. This amplifier is designed to provide a big impact on sound reproduction. Please read and understand this manual completely before attempting to operate your new amplifier. This booklet contains important information concerning the proper and safe operation of your new amplifier.
UNPACKING: Every MT-1000II amplifier has been thoroughly tested and has been shipped in perfect operating condition. Carefully check the shipping carton for damage that may have occurred during shipping. If the carton appears to be damaged, carefully inspect your unit for any damage and be sure all accessories necessary to operate the system have arrived intact. In the event, that damage has been found or parts are missing, please contact your dealer for further instructions.
INSTALLATION: This amplifier is designed to mount into a standard 19” rack. The front panel provides four holes used to screw the unit into a rack. The unit also provides a way to rear mount the unit into a rack for added security. Rear mounting of the unit is especially recommended if the unit is to mount into a mobile rack.
MT-1000II FRONT PANEL
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Rack Mounting Ears – Two front panel mounting holes are provided on each mounting ear.
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Cooling Vents – These vents are used for proper cooling. Never block these vents when installing the amplifier or other associated equipment and keep them clean at all times. Air must flow unimpeded through these ports.
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Channel 1 Signal Indicator – This green LED will glow when there is an input of the audio signal into channel one.
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Channel 1 Clip Indicator – The red clip LED will begin to flash when the channel begins to overload. At this point, the channel will begin to distort. Under heavy clipping activity, lower the channel’s gain control to reduce the risk of damage to your speakers and amplifier. This LED may glow when the unit has been turned off, this is normal.
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Channel 1 Gain Control – This rotary knob is used to control the output signal of channel one. Tuning the knob in a clockwise direction will increase signal output.
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Channel 1 Protect Indicator – The red protect LED will begin to glow when the channel goes into protect mode. When the channel goes into protect mode, all output for the channel will turn off. This is to protect any speakers connected to the channel.
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AC Power Switch – MT-1000II amplifier has a front-panel AC mains power switch.
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Power Indicator – This LED will glow when mains power is applied to the unit. This light may continue to glow briefly after mains power has been turned off, this is normal.
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Channel 2 Protect Indicator – The red protect LED will begin to glow when the channel goes into protect mode. When the channel goes into protect mode, all output for the channel will turn off. This is to protect any speakers connected to the channel.
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Channel 2 Gain Control – This rotary knob is used to control the output signal of channel two. Tuning the knob in a clockwise direction will increase signal output.
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Channel 2 Clip Indicator – The red clip LED will begin to flash when the channel begins to overload. At this point, the channel will begin to distort. Under heavy clipping activity, lower the channel’s gain control to reduce the risk of damage to your speakers and amplifier. This LED may glow when the unit has been turned off, this is normal.
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Channel 2 Signal Indicator – This green LED will glow when there is an input of the audio signal into channel two.
MT-1000II REAR PANEL
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Channel 1-2 Balanced 1/4” TRS & XLR Input Connectors – These connectors accept input signals on balanced TRS and XLR input plugs. Connectors for each channel are in parallel, and the unused connectors may be used for “loop through” connections to other amplifiers.
TRS pin setting: Tip/signal positive, Ring/signal negative, Sleeve/ground.
XLR pin setting: Pin-2/signal positive, Pin-3/signal negative, Pin-1/ground. -
Amp. Mode Selection Switch – This switch allows the amplifier to operating mode from either stereo or mono bridge selection.
Amplifiers are factory-configured for Stereo Mode. See the section on Mode Selection for more information. -
Cooling Vents – These vents are used for proper cooling. Never block these vents when installing the amplifier or other associated equipment and keep them clean at all times. Air must flow unimpeded through these ports.
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Fuse Holder – This holder houses the external fuse. Always replace with the exact same type fuse, otherwise instructed to do so by an authorized audio service technician.
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AC Power Input – IEC AC power inlet connector, plug this cable into a standard 110V or 220V wall outlet. Be sure that supplied voltage matches that of the required voltage of your amplifier.
Never plug your amplifier into a wall outlet that does not match the required voltage of your amplifier, serious damage may occur to your unit. -
Channel 1-2 Output Jack / 5-way Binding Post – Connect to your speaker’s input jack. Red is a positive signal and Black is negative signal.
SET UP
INPUTS – The MT-1000II amplifier allows you to use two types of input
connectors per channel, an XLR female jack for balanced connections and a 1/4”
TRS female jack that will accept balanced and unbalanced connectors. Use these
connections to connect the output signal from a mixer, cross-over or EQ to the
MT-1000II amplifier. A balanced connection is recommended for cable runs
longer than 20ft. When constructing your own XLR cables follow the pin
configuration described below for proper connections. For cable runs shorter
than 20ft., you may choose the 1/4” TS unbalanced input option. The 1/4” TS
unbalanced input option may be more convenient for most users due to the
abundant supply of prefabricated cables available at your local audio dealer.
OUTPUTS –
BINDING POST/BANANA PLUG: Connect your speakers to the binding post outputs on
the rear of the amplifier. The speaker wire may be connected by bare wire
(directly connected, usually for permanent connections), banana plug, or spade
connector. Connections are made to channel one and channel two outputs for
Stereo Mode or across the red terminals of channel one and channel two for
Mono Bridge Mode.
IMPORTANT NOTICE: Although a speaker will operate with the positive and
negative leads plugged into either terminal on the amplifier binding post, be
sure to plug the negative lead into the black terminal and positive lead into
the red terminal. Ensuring proper polarity will avoid speakers being out of
phase which can cause a loss of bass response.
BANANA PLUG: (Figure 6)
When connecting your speakers to the amplifier using banana plugs, be sure
that the red and black caps on the binding post are completely screwed in.
Insert the banana plugs into the caps of the binding post, be sure that the
banana plugs are inserted securely to avoid the risk of popping out.
BARE WIRE CONNECTION: (Figure 7)
When connecting your speakers to the amplifier using bare wire, unscrew the
red and black caps on the binding post, be sure not to completely remove or
unscrew the red and black caps. Strip back the wire insulation 1/2” (13mm).
Insert the bare wire into the hole that was revealed by unscrewing the binding
post cap. After inserting the wire into the binding post hole, screw the
binding post cap down on the wire. To reduce the risk of shock or damage to
your amplifier, be sure that the wire connected to one binding post does not
come in contact with that of another.
SPADE CONNECTOR: (Figure 8)
When connecting your speakers to the amplifier using a spade connector,
unscrew the red and black caps on the binding post, be sure not to completely
remove or unscrew the red and black caps. Insert the spade connector into the
binding post and tighten the caps down on the spade connector. To reduce the
risk of shock or damage to your amplifier, be sure that the wire connected to
one binding post does not come in contact with that of another.
MONO BRIDGE CONNECTIONS: (Figure 9)
Mono bridge operation connections will follow the above descriptions, however,
when operating in mono bridge operation the speaker connections will run
between the two positive (red) leads, Use channel two positive output
terminals for the negative connection and the channel one positive output
terminal for the positive connection.
OPERATING MODES
STEREO OPERATION: Page 7/Figure 10 details an example of a typical stereo
set-up. Connect your inputs into channels one and two of the amplifier.
Connect your speakers to the outputs on the rear of the amplifier. Be sure
that your front gain controls are turned down to their lowest level (fully
counterclockwise).
Turn your amplifier on.
Turn your input source level up. Use your front gain controls to regulate the
output volume. Be sure not to raise the volume to the clip level, however, an
intermittent clip signal is acceptable.
MONO BRIDGE OPERATION: Page 7/Figure 11 details a mono bridge set-up. Be
sure your amplifier and all other audio equipment are powered down.
Press the Stereo/Mono Bridge switch to the Mono Bridge position. Connect an
input signal to channel one. Connect your speaker across the red output
binding post on the rear of your amplifier. Turn your equipment on (your
amplifier should always be the last item you turn on). Apply an input source
signal to your amplifier. Use channel one gain control to regulate your
amplifier output. 
PROTECTION
SAFE POWER LEVELS AT DIFFERENT OUTPUT LOADS:
8-Ohm Loads: The amplifier can operate at its rated power level without the
risk of overheating. However, it may cause excessive temperature if it is
pushed hard enough to continually light the “CLIP” indicator, and the
amplifier’s average output power can reach its maximum peak.
4-Ohm Loads: If the “CLIP” indicator flashes occasionally, the amplifier is
approaching its Maximum long-term power capacity. If it is lit about half the
time, the amplifier channel will probably go into thermal protection within a
few minutes.
2-Ohm Loads: Do not recommend using MT Series for 2ohm loads.
S HORT CIRCUIT PROTECTION – The MT-1000II amplifier comes with built-in
Output Short Circuit Protects. The Output Short Circuit Protection protects
the output devices of the amplifier from short circuits and stressful loads.
If your speaker lines short, the amplifier automatically detects this problem
and discontinued operation for that channel. If one side of your amplifier
becomes shorted and goes into protect mode, the other side will continue to
operate normally. During short circuit protection, the “CLIP” LED and
“PROTECT” LED will light simultaneously indicating amplifier fault. Channel
output during the “Short Circuit Protection” will be interrupted (i.e. no
sound output). Short Circuit Protection can usually be traced back to the
signal output line (i.e. speaker line). Check the line from the output
terminal of the amplifier to the speaker. If this line is good, check the
internal speaker connections and components. A short circuit will usually be
traced to a bad cable or a bad speaker component and is rarely traced to the
amplifier itself. INPUT/OUTPUT PROTECTION – The input circuits are
isolated by resistors. An ultrasonic network uncouples RF from the output and
helps to keep the amplifier stable with reactive loads.
OPERATING VOLTAGE (AC MAINS) – On the rear panel will indicate the
correct AC mains voltage. Connecting to the wrong voltage is dangerous and may
damage the amplifier. Always be sure the source voltage for your areas matches
the required voltage for your amplifier.
GAIN CONTROLS – The gain controls are located on the front panel and are
calibrated in 2dB of attenuation from full gain. It is best to adjust the
amplifier so no “hissing” is heard from speakers with no music being played,
this will ensure the lowest possible distortion during normal operation.
AMPLIFIER FEATURES
SWITCH-MODE POWER SUPPLY: The MT-1000II is designed with SMPS power with
CLASS D of Power Stage Topology instead of the traditional toroidal
transformer, therefore the total weight of the amplifier is ultra-light, and
also the complete performance is better.
LED INDICATORS: Each channel has three LEDs. One green LED indicates
signal, one red LED indicates signal clipping and one red/blue LED indicates
protections mode for shorts/overload. Both channels also share the center blue
LED that indicates the mains power is applied to the unit.
SPECIFICATIONS
M T- 1000II
| R.M.S. Output Power 2 Ch Driven | 4ohms 250W |
|---|---|
| 4ohms/8ohms 1KHz 1% THD | 8ohms 150W |
R.M.S. Output Power Bridged Mono
8ohms 1KHz 1% THD| 500W
Input Sensitivity| 0.775V
Frequency Response (20Hz~20KHz)| 20Hz-20kHz ±1dB
Total Harmonic Distortion| <0.03%
Crosstalk @ 1KHz| >60dBV
Damping Factor| >400
Signal To Noise Ratio below rated power 20Hz to 20kHz, A-Weighted| >100dB
Power Consumption
@ Maximum Output Power 8ohms| 770W
7A@110V
Output Circuitry| CLASS D topology
Input Impedance| Unbalance 10k
Balance 20k
Power Supply| Switching Power
Dimensions (H×W×D)| 44 x 483 x 240 mm
Weight| 3.6kg
Rack Space| 1U