Multi-Channel Power Amplifier - 4 x 550W

Multi-Channel Power Amplifier - 4 x 550W

Multi-Channel Power Amplifier - 4 x 550W

DA-550F

The DA-550F is a 4-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. It delivers 550 W x 4 channels (4 ohm 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 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

The DA Series multi-channel digital power amplifiers are ideal for multi-zone distributed speaker systems and professional sound applications. Engineered with Class D technology, the new DA Series amplifiers operate at 85 percent efficiency and consume almost one-third less power than conventional analog amplifiers. The compact and lightweight single or dual rack-space design and ultra-low heat dissipation allow designers to rack-mount up to five units without open space between units.

The DA Series is comprised of high and low impedance four-channel models each equipped with an independent power supply for each channel to assure continuous operation and unmatched reliability and performance. Other features include recessed stepped attenuators for precise gain calibration, removable dust filters for easy maintenance, and optional isolation transformer.

Competitively priced, the new DA Series multi-channel power amplifiers are backed by TOA's five-year warranty.

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