CROWN / DCi 4/300

300W x 4 (8Ω) power amplifier for high quality equipment. Since one unit supports both low impedance and high impedance, ideal for audio equipment that requires efficient use of equipment installation space.

DCi Series Analog reduces the installation space for power amplifiers in a facility that requires multiple sound output lines. The DCi 8 | 300, the most multi-channel model, has eight output channels and outputs 2400W per channel, 300W (4Ω) from a 2U housing. Because it supports bridged mono output, you can take out larger output. Each channel can independently switch between low impedance connection and high impedance connection. Even if the connection method is mixed, there is no need to prepare a dedicated power amplifier. Furthermore, when connected to high impedance, the constant voltage transmission line can be driven directly, eliminating the need for an external transformer.

DCi Series Analog reduces power consumption and saves electricity bills during operation. The amplifier employs highly efficient class D operation. The power supply section is equipped with a switching power supply and a power factor correction (PFC) circuit to achieve the lowest power consumption in its class. In addition, since the heat generation is low, the electricity cost for air conditioning for cooling can be reduced. It also has an Auto Standby function that reduces power consumption during standby to 1W or less. If there is no signal for more than 30 minutes, it will automatically switch to standby mode. It is also possible to forcibly enter standby mode with an external contact.

DCi Series Analog uses a proprietary integrated circuit "DriveCore" at the heart of signal processing to improve reliability and sound quality. DriveCore integrates functions such as high-precision clock, pulse width modulation, error amplification, and feedback on a single chip. The number of parts used has been reduced by more than 500 compared to our conventional products, and reliability in long-term use has improved. At the same time, it achieves excellent transient characteristics, precise details at low output, and precise tracking of low frequencies at high output. The SN ratio achieves more than 108dB and provides excellent sound quality.

DCi Series Analog is equipped with various protection circuits that protect amplifiers and speakers from sudden trouble. In addition, the operating status can be checked in detail with the indicators on the front panel. In addition, a status signal is output from the rear panel to confirm normal operation from a remote location. The input is equipped with a 21-stage attenuator. When connected to high impedance, the output voltage can be selected from 70V and 100V, and a 35Hz high-pass filter is automatically inserted. Equipped with a variable-speed air-cooling fan to effectively cool the inside of the main unit.