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DA-550F Multichannel Power Amplifier

DA-550F CU

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).

*0 dB = 0.775 V
Power Source 120 V AC, 50/60 Hz
Amplification System Class D
Power Consumption 480 W (based on UL/CSA standards), 2800 W (rated output 4 Ω), 1650 W (rated output 8 Ω)
Input 4 circuits, +4 dB* (1.23 V) (input level control in maximum 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 × 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 - 20,000 Hz (-2 dB, +1 dB)
Total Harmonic Distortion 0.1% (1 kHz)
0.15% (20 - 20,000 Hz)
Protection Circuit Protection against excessive current flow due to overload, short circuit,
unusual DC voltage output, temperature rise at power amp. heat sink (100℃ or more (212゜F)),
temperature rise at power supply heat sink (80℃ or more (176゜F))
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: Under 12 mA
Connector: RJ-45 connector × 2
Connection cable: Category 5 twisted pair cable for LAN (CAT5-UTP)
Maximum cable distance: 600 m (656.17 yd)
LED Indicator Power (blue) × 1, Input (green) × 4, Output (yellow) × 4, Peak (red) × 4, Protect (red) × 4
Cooling Forced air cooling
Operating Temperature -10℃ to +40℃ (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 8.8 kg (19.4 lb)
Accessory Removable terminal plug (3 pins) …4, Tamper-proof cap …4
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