TOA DA-550F 4-Channel Digital Power Amplifier 550 w. Class D
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TOA DA-550F 4-Channel Digital Power Amplifier 550 w. Class D
ยี่ห้อ : TOA
รุ่น : 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 × 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.
Power Source
220 - 240 V AC
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
10 kΩ
XLR-3-31 type connector
CH 1 mode ON/OFF switch (ON: CH 1 to All ch
Rated Output
4 channels: 550 W × 4 (4 Ω)
2 channels (BRIDGE): 1100 W × 2 (8 Ω)
M4 screw terminal
Frequency Response
20 Hz - 20 kHz (-2 dB
Total Harmonic Distortion
0.1 % (1 kHz)
0.15 % (20 Hz - 20 kHz)
Protection Circuit
Protection against excessive current flow due to overload
unusual DC voltage output
temperature rise at power amp. heat sink (100 ℃ (212 ゜F) or more)
temperature rise at power supply heat sink (80 ℃ (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
Monitor output: Power ON/OFF status of the individual channels
Protection status of the individual channels
Fan operation status
photocoupler open collector output
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)
