Background Music System DPA4240

DESCRIPTION

1U digital power amplifier series is widely used in government buildings, stadiums, stations, airports, railway subway and other large public places for conference broadcast sound reinforcement system equipment. This power amplifier is specially developed for the public broadcasting field. With 1U chassis structural design and four-channel configuration, it adopts the latest Class D power amplification technology. The sound is sweet, the protection function is perfect, and the stability is high, thus enabling this power amplifier to adapt to a variety of complex and extreme environments. Rich interfaces including balanced/unbalanced connection, working status indicator, energy-saving mode, constant voltage/constant resistance output, etc., provide users with a more natural, clearer and more realistic sound experience, making it an optimal choice for applications such as background music and amplified voice.

FEATURES

• High-efficiency energy-saving switching mode power supply, with superior Class D performance, low power consumption and less heat generation.

• 1U chassis, 19-inch cabinet space, realizing space-saving installation.

• Front panel with circuit, overload, clipping, output signal (green/orange LED lights) and power input (blue light) indicators.

• Built-in limiter effectively filters redundant frequency components in 20Hz-20KHz music signals, delivering more stable, reliable and clearer sound.

• With double balanced/unbalanced signal input, four-channel rated power 4×60W (total 240W), ensuring powerful and flexible audio output.

• Amplitude adjustment and compensation, with independent gain control for balanced input, and adjustable VOL LEVEL in the range of -3dB-0dB.

• High/low impedance dual switching, with balanced output optional for 8Ω/100V/1-4Ω/100V impedance speakers.

• The broadest intermediate frequency cooling fan and forced air cooling design. The cooling fan draws air from the front of the chassis and exits from the back.  Do not block the air inlet ports.

• With automatic temperature control, the sound is clear and bright.

• Phoenix terminal with output, XLR balanced input .

• Built-in automatic standby function: when there is no audio signal input, the power amplifier circuit stops working while the power supply circuit continues to work, so as to save power, reduce temperature rise and improve product life. It automatically exits the energy-saving mode when there is a signal input.

• Four-channel independent protection including high temperature, peak clipping and DC protection, ensuring stable and reliable operation of each channel.