Product Overview
The TOA 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 DA Series amplifiers operate at 85 percent efficiency and consume almost one-third less power than conventional analog amplifiers. The compact and lightweight 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 DA Series multi-channel power amplifiers are backed by TOA’s five-year warranty.
Includes:
- Removable terminal plug (3 pins) x4
- Tamper-proof cap x4
Features:
- DA-550F: 4x 500W (4Ω), 4x 350W (8Ω), 2x 1100W bridged (8Ω)
- Class D design – 85% efficient!
- 30% lower power consumption than conventional amplifiers
- Stack up to 5 units without open spaces between units
- Lightweight (14.6 to 19.4lbs.)
- Independent power supply for each channel
- Low heat dissipation
- Recessed stepped attenuators
- Comprehensive protection circuitry
- Removable dust filters for easy maintenance
- Five-year warranty
Specifications:
- Power Source: 120VAC, 50 / 60Hz
- Amplification System: Class D
- Power Consumption: 480W (based on UL / CSA standards), 2800W (rated output 4Ω), 1650W (rated output 8Ω)
- Input: 4 circuits, +4dB* (1.23V) (input level control in maximum position),10kΩ, 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: 550W × 4 (4Ω), 350W × 4 (8Ω)
- 2 channels (BRIDGE): 1100W × 2 (8Ω)
- M4 screw terminal, distance between barriers: 8.8mm (0.35")
- Frequency Response: 20 - 20,000Hz (-2dB, +1dB)
- Total Harmonic Distortion: 0.1% (1kHz) 0.15% (20 - 20,000Hz)
- 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: 100dB (A-weighted)
- Crosstalk: 70dB (A-weighted)
- Control / Monitor
- Control input: Power ON/OFF, status of the individual channels photo-coupler input, drive voltage: 9VDC (Min) - 14V (Max), 12V (Typ)
- Monitor output: Power ON/OFF status of the individual channels, Protection status of the individual channels, Fan operation status, photo-coupler open collector output, withstand voltage: 30VDC, control current: Under 12mA
- Connector: RJ-45 connector × 2
- Connection cable: Category 5 twisted pair cable for LAN (CAT5-UTP)
- Maximum cable distance: 600m (656.17yds)
- 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) × 404.2mm (D) (18.98" × 3.48" × 15.91")
- Weight: 8.8kgs (19.4lbs)
