The DA-550F is a 4-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. It delivers 550 W × 4 channels (4 Ω output) using a switching power supply. Each channel is equipped with an independent power section. Its Control/Monitor terminals permit power ON/OFF control of the individual channels and status monitoring for the power ON/OFF on each channel, protection on each channel, and fan operation. Prepare the control panel or status monitor display panel separately. It can be mounted in an EIA Standard equipment rack (2 unit size).
| Power Source | 220 - 240 V AC, 50/60 Hz |
|---|---|
| Amplification System | Class D |
| Power Consumption | 480 W (based on EN standards)
2750 W (rated output 4 Ω × 4) 1550 W (rated output 8 Ω × 4) |
| Input | 4 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: CH 1 to All ch, OFF: Each ch) |
| Rated Output | 4 channels: 550 W × 4 (4 Ω). 350 W x 4 (8 Ω)
2 channels (BRIDGE): 1100 W × 2 (8 Ω) M4 screw terminal, distance between barriers: 8.8 mm (0.35") |
| Frequency Response | 20 Hz - 20 kHz (-2 dB, +1 dB) |
| Total Harmonic Distortion | 0.1 % (1 kHz)
0.15 % (20 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) |
| Control/Monitor | Control input: Power ON/OFF status of the individual channels
photocoupler input, drive voltage: 9 V DC (Min) - 14 V (Max), 12 V (Typ) Monitor output: Power ON/OFF status of the individual channels, Protection status of the individual channels, Fan operation status photocoupler open collector output, withstand voltage: 30 V DC, control current: 12 mA or less Connector: RJ-45 connector × 2 Connection cable: Shielded Category 5 twisted pair cable for LAN (CAT5-STP) Maximum cable distance: 600 m (656.17 yd) |
| 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) × 88.4 (H) × 404.2 (D) mm (18.98 × 3.48" × 15.91) |
| Weight | 9 kg (19.84 lb) |
| Accessory | Power cord (2 m (6.56 ft)), Removable terminal plug (3 pins) x 4,
Tamper-proof cap x 4, Rack mounting screw (with washer) x 4 |