DA-250DH Dual-Channel Power Amplifier

DA-250DH Dual-Channel Power Amplifier

The DA-250DH is a 2-Channel Digital Power Amplifier designed for 100 V line high-impedance distribution and features lightweight, compact, high power output, and high efficiency. It delivers 250 W × 2 channels (40 Ω output) using a switching power supply. Each channel is equipped with an independent power section. It can be electrically isolated from the high-impedance speaker system by attaching the MT-251H Output Transformer (optional). It can be mounted in an EIA Standard equipment rack (1 unit size).

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Description

DA-250DH Dual-Channel Power Amplifier

Power Source220 – 240 V AC, 50/60 Hz
Amplification SystemClass D
Power Consumption150 W (based on EN standards)
580 W (rated output 100 V line, 40 Ω x 2)
Input2 circuits, +4 dB* (1.23V) (input level control in max. position),
10 kΩ, electronically-balanced, removable terminal block (3 pins),
XLR-3-31 type connector
CH 1 mode ON/OFF switch (ON: PARALLEL, OFF: STEREO)
Rated Output2 channels: 250 W × 2 (100 V line, 40 Ω)
M4 screw terminal, distance between barriers: 8.8 mm (0.35″)
Frequency Response50 Hz – 20 kHz (-3 dB, + 1 dB)
Total Harmonic Distortion0.1 % (1 kHz)
0.3 % (100 Hz – 20 kHz)
Protection CircuitProtection against excessive current flow due to overload
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (100 °C (212 °F) or more)
temperature rise inside the unit (80 °C (176 °F) or more)
S/N Ratio100 dB (A-weighted)
Crosstalk70 dB (A-weighted)
LED IndicatorPower (blue) × 1, Input (green) x 2, Output (yellow) x 2, Peak (red) x 2,
Protect (red) × 2
CoolingForced air cooling
Operating Temperature-10 °C to +40 °C (14 °F to 104 °F)
Operating Humidity90 %RH or less (no condensation)
FinishPanel: Aluminum, black, alumite
Case: Plated steel sheet
Dimensions482 (W) × 44 (H) × 401.8 (D) mm (18.98 × 1.73″ × 15.82)
Weight5.3 kg (11.68 lb)
AccessoryPower cord (2 m (6.56 ft)) x 1, Removable terminal plug (3 pins) x 2,
Tamper-proof cap x 2, Rack mounting screw (with plain washer) x 4
OptionMatching transformer: MT-251H

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