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TOA Multichannel Power Amplifier DA-250FH
The DA-250FH is a 4-Channel Digital Power Amplifier designed for 100 V line high-impedance distribution and features lightweight, compact, high...
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 × 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
| 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* (1.23V) (input level control in max. 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) | |
| Rated Output | 4 channels: 250 W × 4 (100 V line, 40 Ω) |
| M4 screw terminal, distance between barriers: 8.8 mm (0.35") | |
| Frequency Response | 50 Hz - 20 kHz (-3 dB, +1 dB) |
| Total Harmonic Distortion | 0.1 % (1 kHz) |
| 0.3 % (100 Hz - 20 kHz) | |
| Protection Circuit | Protection 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 Ratio | 100 dB (A-weighted) |
| Crosstalk | 70 dB (A-weighted) |
| LED Indicator | Power (blue) × 1, Input (green) x 4, Output (yellow) x 4, Peak (red) x 4, |
| Protect (red) × 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 | |
| Dimensions | 482 (W) × 44 (H) × 401.8 (D) mm (18.98 × 1.73" × 15.82) |
| Weight | 6.8 kg (14.99 lb) |
| Accessory | Power cord (2 m (6.56 ft)) x 1, Removable terminal plug (3 pins) x 4, |
| Tamper-proof cap x 4, Rack mounting screw (with plain washer) x 4 | |
| Option | Matching transformer: MT-251H |
