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
COOLING
Forced air cooling
OPERATING TEMPERATURE
-10°C to +40°C (14°F to 104°F)
OPERATING HUMIDITY
90% RH or less (no condensation)
FINISH
Panel: Aluminum, black, alumite; Case: Plated steel sheet