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FEATURES
4 x 250 W power output
70 V / 100 V speaker output
Low power consumption and light weight
Each channel with independent power supply
Control covers eliminate tampering
Low-noise constant speed fans
Stacking possible
Protection circuitry
Pulse width modulation with controlled power supply
DESCRIPTION
The DA-250FH is a 4-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 x 4 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).
SPECIFICATION
Parameter
Details
Power Source
220 - 240 V AC, 50/60 Hz
Amplification System
Class D
Power Consumption
294 W (based on EN standards); 1150 W (rated output 100 V line, 40 Ω x 4)
Input
4 circuits, +4 dB* (1.23 V), input level control at max, 10 kΩ electronically-balanced, removable terminal block (3 pins)
Input Mode Switch
CH 1 mode ON/OFF (ON: CH 1 to all channels, OFF: each channel independently)
Rated Output
4 channels: 250 W x 4 (100 V line, 40 Ω), M4 screw terminal, 8.8 mm (0.35 in) spacing
Frequency Response
50 Hz – 20 kHz (−3 dB, +1 dB)
Total Harmonic Distortion
0.1% at 1 kHz; 0.3% (100 Hz – 20 kHz)
Signal to Noise Ratio
100 dB (A-weighted)
Crosstalk
70 dB (A-weighted)
Protection Circuit
Overcurrent, short circuit, abnormal DC output, amp heat sink temp ≥ 110°C, internal temp ≥ 80°C
LED Indicators
Power (blue) x 1; Input (green) x 4; Output (yellow) x 4; Peak (red) x 4; Protect (red) x 4
