MT-251H
Matching Transformer
DA-250FH
Multi-channel Digital Power Amplifier
DiscontinuedDA-250FH
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).
- 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
*0 dB = 0.775 V
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)
1150 W (rated output 100 V line, 40 Ω x 4)
Rated Output
4 channels: 250 W x 4 (100 V line, 40 Ω)
M4 screw terminal, distance between barriers: 8.8 mm (0.35)
M4 screw terminal, distance between barriers: 8.8 mm (0.35)
Input
4 circuits, +4 dB* (1.23 V) (input level control in maximum position),
10 kΩ, electronically-balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
10 kΩ, electronically-balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
Frequency Response
50 Hz - 20 kHz (-3 dB, +1 dB)
Total Harmonic Distortion
0.1 % (1 kHz)
0.3 % (100 Hz - 20 kHz)
0.3 % (100 Hz - 20 kHz)
Signal to Noise Ratio
100 dB (A-weighted)
Crosstalk
70 dB (A-weighted)
Protection Circuit
Protection against excessive current flow due to overload,
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (110 °C (230 °F) or more),
temperature rise inside the unit (80 °C (176 °F) or more)
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (110 °C (230 °F) or more),
temperature rise inside the unit (80 °C (176 °F) or more)
LED Indicator
Power (blue) x 1, Input (green) x 4, Output (yellow) x 4,
Peak (red) x 4, Protect (red) 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
Case: Plated steel sheet
Dimensions
482 (W) x 44 (H) x 401.8 (D) mm (18.98 x 1.73" x 15.82")
Weight
6.8 kg (14.99 lb)
Included Accessories
Power cord (2 m (6.56 ft) …1, Removable terminal plug (3 pins) …4,
Tamper-proof cap …4, Rack mounting screw (with plain washer) …4
Tamper-proof cap …4, Rack mounting screw (with plain washer) …4
Optional Accessories
Matching transformer: MT-251H
Please download Datasheet to access full specifications.
Functional & Interface Accessories
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