DA-250F
多頻道數位功率放大器
DA-250F
DA-250F為4頻道輸出之數位功率放大器，每頻道提供250W (4 Ω)輸出功率。
外型僅1U不佔機櫃空間。
- 內建4組輸入及4組輸出，可由開關切換，組成1入2出/ 1入3出* / 1入4出 / 2入2出 / 3入3出* / 4入4出等，共8種切換模式
- 4組獨立交換式電源(Switching Power)，任一頻道故障也不會中斷其它頻道動作
*0 dB = 0.775 V
電源
110 V AC, 60 Hz
Amplification System
Class D
消耗功率
200 W (based on CNS standards)
1100 W (rated output 4 Ω x 4)
800 W (rated output 8 Ω x 4)
1100 W (rated output 4 Ω x 4)
800 W (rated output 8 Ω x 4)
輸入
4 circuits, +4 dB* (1.23 V) (input level control in maximum position),
10 kΩ, electronically-balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
10 kΩ, electronically-balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
額定輸出
4 channels: 250 W x 4 (4 Ω), 170 W x 4 (8 Ω)
2 channels (BRIDGE): 500 W x 2 (8 Ω)
M4 screw terminal, distance between barriers: 8.8 mm
2 channels (BRIDGE): 500 W x 2 (8 Ω)
M4 screw terminal, distance between barriers: 8.8 mm
頻率響應
20 - 20,000 Hz (±1 dB)
Total Harmonic Distortion
0.1% (1 kHz)
0.3% (20 - 20,000 Hz)
0.3% (20 - 20,000 Hz)
回路保護
Protection against excessive current flow due to overload,
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (110℃ or more),
temperature rise inside the unit (80℃ or more)
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (110℃ or more),
temperature rise inside the unit (80℃ or more)
S/N比
100 dB (A-weighted)
Crosstalk
70 dB (A-weighted)
LED指示燈
Power (blue) x 1, Input (green) x 4, Output (yellow) x 4,
Peak (red) x 4, Protect (red) x 4
Peak (red) x 4, Protect (red) x 4
Cooling
Forced air cooling
工作溫度
-10 °C to +40 °C
工作濕度
90% RH or less (no condensation)
外觀
Panel: Aluminum, black, alumite Case: Plated steel sheet
尺寸
482 (W) x 44 (H) x 401.8 (D) mm
重量
6.8 kg
附屬品
Removable terminal plug (3 pins) …4, Tamper-proof cap …4,
Rack mounting screw (with plain washer) …4
Rack mounting screw (with plain washer) …4
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