- Vehicles & accessories
- Motor vehicle electronics
- Car audio amplifiers
- Optimus
- MT-1500
- Installation and operating instructions
PROTECTION FEATURES. Optimus MT-3500, MT-1500
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Optimus MT-1500 is a power amplifier designed for professional audio applications, offering versatile features for clear and powerful sound reinforcement. With its ability to operate in stereo or parallel mode, you can customize the amplifier's output to match your specific needs. The MT-1500 boasts a range of protection mechanisms, including overheat, short circuit, DC voltage, and subsonic frequency safeguards, ensuring reliable operation.
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MT-1500 / MT-3500
Power Amplifiers
7. PROTECTION FEATURES
Each power amplifier incorporates several circuits to protect both themselves and the loudspeakers against short and open circuits, DC voltages and overheating. When the protection mode is activated, the channel’s output relay disconnects the speaker load until the problem is corrected or the amplifier cools down.
7.1 Overheat
The internal fan will keep the amplifier operating well within its intended temperature range under all normal conditions. When a channel’s heat sink temperature reaches 90 ºC, which may indicate an obstructed air supply, clogged air filter, etc, the channel will disconnect its load. Normal operation will resume automatically once it cools to 80 ºC. During this time, the channel’s
PROTECT LED will light.
If an output is shorted, the protection circuit will be more sensitive than in the normal protection situation and will protect the channel’s output transistors from over current stress. The channel’s
PROTECT LED will light. If the short circuit remains, the channel will eventually thermally protect itself by disconnecting the load.
7.3 DC voltage protection
If an amplifier channel detects DC voltage at its output, the circuit will immediately open speaker’s line to prevent loudspeakers damage. The channels PROTECT LED will light.
7.4 Subsonic frequencies
The power amplifier has a built-in subsonic frequency protection circuit, cornered at 10 Hz, for each channel. Also a special high frequency protection automatically disconnects speakers when excessive high frequency energy appears at the output.
7.5 Turn-on / turn-off protection
At power up speakers are disconnected, the power supplies charge for about few seconds and stabilize, the speakers are then connected. When power is removed, speaker loop is synchronized with the turn off signal, therefore no thumps or pops are heard.
The power amplifier automatically protects speakers from DC voltages, subsonic signals and excessive high frequency signals; however, the user must be aware that the amplifier power does not exceed the speaker’s power capabilities.
MT-1500 / MT-3500 Version 1.0
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Table of contents
- 3 INSTRUCCIONES DE SEGURIDAD
- 4 CARACTERÍSTICAS
- 4 INSTALACIÓN Y FUNCIONAMIENTO
- 4 Desembalaje
- 4 Montaje
- 5 Panel frontal
- 5 Panel posterior
- 5 Precauciones de funcionamiento
- 6 Instalación
- 6 Conexión de entradas
- 6 Entrada Jack conexión balanceada
- 6 Entrada Jack conexión no balanceada
- 6 Entrada XLR balanceada
- 6 Conexión de salidas
- 7 Conexión de la alimentación
- 7 MODOS DE FUNCIONAMIENTO
- 7 Funcionamiento estéreo
- 7 Funcionamiento paralelo
- 7 INTERRUPTORES Y TECLAS DE CONTROL
- 7 Interruptor de alimentación AC y circuito de protección
- 7 Potenciómetros de control de volumen de entrada
- 8 Selector de modo de funcionamiento
- 8 Interruptor de unión chasis masa
- 8 INDICADORES LUMINOSOS
- 8 LED PROTECT
- 8 LED CLIP
- 8 LEDS LEVEL
- 9 LED POWER
- 9 CARACTERÍSTICAS DE PROTECCIÓN
- 9 Sobrecalentamiento
- 9 Cortocircuito
- 9 Voltaje de corriente continua
- 9 Frecuencias subsónicas
- 9 Protección de conexión / desconexión
- 10 Protección de los altavoces
- 10 ESPECIFICACIONES TÉCNICAS
- 12 SAFETY INSTRUCTIONS
- 13 FEATURES
- 13 INSTALLATION AND OPERATION
- 13 Unpacking
- 13 Mounting
- 14 Frontal panel
- 14 Rear panel
- 14 Operating precautions
- 15 Installation
- 15 Connection input
- 15 Jack inputs (balanced signals)
- 15 Jack inputs (unbalanced signals)
- 15 XLR inputs (balanced signals)
- 15 Connecting outputs
- 16 Connecting power
- 16 OPERATING MODES
- 16 Stereo operation
- 16 Parallel operation
- 16 SWITCHES AND CONTROLS
- 16 AC power switch circuit breaker
- 16 Input volume potentiometers
- 16 Mode select switch
- 17 Signal ground lift switch
- 17 INDICATORS
- 17 Protect LED
- 17 Clip LED
- 17 LEVEL LEDS
- 17 POWER LED
- 18 PROTECTION FEATURES
- 18 Overheat
- 18 Short circuit
- 18 DC voltage protection
- 18 Subsonic frequencies
- 18 Turn-on / turn-off protection
- 18 Speaker protection
- 19 TECHNICAL SPECIFICATIONS