Quad-channel Class-D amplifier 4 x 75W

The DPA series amplifiers are Class-D power amplifiers designed to meet the specialized needs of sound contractors for multi-zone distributed speaker systems. They are designed in six different models of Class-D power amplifiers, divided in three different architectures to meet the requirements for all kinds of applications. They combine the best of all features in one single series of amplifiers, providing an outstanding sound quality with all the known advantages of Class-D amplifiers such as the excellent efficiency and very low heat dissipation. Due to the complete passively cooled entity only a minimal of maintenance is needed while ensuring maximum reliability. The small size of a single rack space make them very interesting for fixed rack mount as well as mobile applications. The DPA74 is built as multi channel power amplifier with four individual controllable channels containing various specific features and advanced protection circuitry which protects against DC malfunctioning, short circuit, overheating and overload. The signal input connections are accommodated with balanced XLR connectors. The operation mode can be selected between stereo mode, bridge mode and parallel mode. The output connections are accommodated with Euro-Terminal blocks.
System Specifications
RMS Power @ 8 Ω Stereo 4 x 50 W
@ 4 Ω Stereo 4 x 75 W
@ 8 Ω Bridge 2 x 150 W
Inputs Sensitivity (1W/1m) 4 dBu
Impedance 20 kΩ
CMRR (1 kHz) > 60 dB
Frequency Response (± 3 dB) 20 Hz - 20 kHz
Signal / Noise > 90 dB
Damping factor 8 Ω, 400 Hz > 200
Channels Seperation 8 Ω, 1 kHz > 70 dB
THD+N (@ 1 kHz) < 0.1%
Technology Class-D
Power Supply Switching mode
Source 100 ~ 240 V AC / 50 ~ 60 Hz
Consumption 140 W
Cooling Convection cooled
Protection DC Short circuit
Over heating
Over load
Signal limiting
Operating temperature 0° ~ 40° at 95% Humidity
Product features
Dimensions 482 x 44 x 330 mm (W x H x D)
Weight 4.570 kg
Mounting 19”
Unit height 1 HE
Construction Steel
Colours Black

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