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Important Precautions Introduction
Front Panels Rear Panels Set Up Operating Modes
Specifications
Protection
Features
PROTECTION
SAFE POWER LEVELS AT DIFFERENT OUTPUT LOADS:
8-Ohm Loads:
The amplifier can operate at its rated power level without risk of overheating. However, it may caused excessive temperature if it is pushed hard enough
to continually light the “CLIP” indicator, 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 to use MT Series for 2ohm loads.
SHORT CIRCUIT PROTECTION -
The MT Series 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 shorted, 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.
THERMAL PROTECTION -
A single variable speed fan on the MT Series amplifier provide adequate cooling. During low level output the fans run at normal
speeds. During high output and as heat raises, (exceeding 50°C.), the fans will run at higher speeds to aid the cooling process. If the heatsink temperature exceeds
91°C., the amplifier will mute until the amplifier cools down. When the amplifier cools below 90°C., the amplifier will return to normal operations. Be sure not to operate
your amplifier below the minimum load ratings to reduce the risk of overheating problems.
UNiKA
MT-1000/MT-2000II
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
GROUND LIFT SWITCH (MT-1000 only) -
Applying or lifting the ground switch will change level for background noise and hum, if the noise level remains the
same in either position, better to keep the ground lift switch in the ground position. This will eliminate 50Hz/60Hz cycle hum that is sometimes induced when mounting
several units in the same rack.
LED INDICATORS:
Each channel has three LEDs. One green LED indicates signal, one red LED indicates signal clipping and one red 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.
