The MA-4050 from Marathon is a professional-quality power amplifier ideal for installed applications. The amp can operate in stereo, parallel mono, or bridged mono modes for terrific versatility. It features XLR and 1/4" inputs, and Speakon and binding post outputs, allowing you to connect to a variety of sound systems. Each channel features an input gain control and LED indicators for signal, overload, and fault.
The amp has a pair of variable-speed cooling fans with front-to-rear airflow for smooth, reliable operation. For further protection and reliability, the amplifier offers circuitry that protects against short circuits, open circuits, overheating, and more. It also has a ground-lift switch to prevent hum caused by ground loops. A voltage selector switch lets you choose between 110/220V operation for use anywhere in the world.
Features
- Rackmount design can be installed in any standard equipment rack
- Can operate in stereo, parallel mono, or bridged mono modes
- XLR and 1/4" inputs, along with Speakon and binding post outputs for versatile connectivity
- High-quality Class AB output circuitry
- Input level controls on each channel
- Integrated compressor prevents distortion
- LED indicators for power, signal, clip, and protect
- Pair of variable-speed cooling fans with front-to-rear airflow for reliable operation
- Integrated protection circuitry for full short circuit, open circuit, thermal, soft start, DC voltage, Sub Electronic and RF protection
- Ground-lift switch reduces hum
- Selectable operating voltage for worldwide use
Specifications
- Power Rating
- Output Power 8 (ohms): 2 x 800W
- Output Power 4 (ohms): 2 x 1300W
- Output Power 2 (ohms): 2 x 1500W
- Output Power BRIDGE 8 (ohms): 2000W
- Output Power BRIDGE 4 (ohms): 4000W
- Frequency Response @ Half Power: 15Hz - 25KHz (+0/-1dB)
- THD+Noise at 1KHz Full Power: <0.03%
- IMD 60Hz & 7KHz, 4:1: <0.038%
- Signal to Noise Ratio: >102dB
- Slew Rate (Input Filter Limited): 40V/uS
- Damping Factor 1KHz@8 ohm: >400:1
- Input Sensitivity: Selectable (0.77V / 1.0V / 1.44V)
- Input Impedance: 10k ohm Balanced to ground
- Input Connectors: Female XLR-3 & 6.35mm TRS Jack
- Output Circuit Type: Class AB
- Output Connectors: 4 Pole Speakon & Binding Post
- Protection:Full short-circuit, Open circuit, Thermal, Soft-start, DC voltage, Sub/Ultrasonic, RF
- LED Indicators (per channel): Bridge, Parallel, Power, Signal, Clip, Protect
- Panel Controls: Front-2 input attenuators REAR Ground lift, mode selection, compressor
- Cooling: Front-to-Back via 2 variable speed fans
- Indicators: Power: 1 x Blue LED, Signal: 2 x Green LED, Clip : 2 x Red LED, Protect: 1 x Red LED
- Power Supply Voltage: Voltage selectable 110 / 220V AC
- Power Supply Voltage: Voltage selectable: 110V \ 220V AC
- Power supply fuse (250): 10A
- Dimensions: 19 W x 18.7 L x 4 H inches