DA-500FH CE-GB
4頻道數碼功率放大器
DA-500FH CE-GB
DA-500FH是一款4頻道數碼功率擴音器，專為100V線路高阻抗分配而設計，具有輕巧、緊湊、高功率輸出和高效率的特點，採用開關電源並提供500Wx4頻道（20Ω輸出），每個頻道均配備獨立的電源部分，可安裝在 EIA標準設備架中（2U 大小）。通過MT-251H輸出變壓器（可選購）可實現電源隔離，適用於高阻抗揚聲器系統，其控制/監控端子支持各頻道的電源開/關控制，同時可監控每個頻道的電源狀態、保護狀態和風扇運行。注：控制面板/狀態監控顯示面板需另行準備。
- 100 V喇叭輸出
- 4x500W額定輸出
- 每個頻道均有獨立電源
- 輕巧且緊湊
- 可安裝於2U設備架
- 可堆疊多達5台，無需在每台之間留空間
- 強制通風冷卻系統
- 低熱量耗散
- 全面的保護電路
- 可拆卸的塵埃濾網，易於維護
*0 dB = 0.775 V
電源
220 - 240 V AC, 50/60 Hz
Amplification System
Class D
消耗功率
460 W (based on EN standards)
2350 W (rated output 100 V line, 20 Ω x 4)
2350 W (rated output 100 V line, 20 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),
XLR-3-31 type connector
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
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)
額定輸出
4 channels: 500 W x 4 (100 V line, 20 Ω)
M4 screw terminal, distance between barriers: 8.8 mm (0.35)
M4 screw terminal, distance between barriers: 8.8 mm (0.35)
頻率響應
50 Hz - 20 kHz (-3 dB, +1 dB)
總諧波失真
0.1 % (1 kHz)
0.3 % (100 Hz - 20 kHz)
0.3 % (100 Hz - 20 kHz)
S/N比
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: 12 mA or less
Connector: RJ-45 connector x 2
Connection cable: Shielded Category 5 twisted pair cable for LAN (CAT5-STP)
Maximum cable distance: 600 m (656.17 yd)
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: 12 mA or less
Connector: RJ-45 connector x 2
Connection cable: Shielded Category 5 twisted pair cable for LAN (CAT5-STP)
Maximum cable distance: 600 m (656.17 yd)
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 (100 ℃ (212 ℉) or more),
temperature rise at power supply heat sink (80 ℃ (176 ℉) or more)
unusual DC voltage output,
temperature rise at power amp. heat sink (100 ℃ (212 ℉) or more),
temperature rise at power supply heat sink (80 ℃ (176 ℉) or more)
LED指示燈
Power (blue) x 1, Input (green) x 4, Output (yellow) x 4, Peak (red) x 4,
Protect (red) x 4
Protect (red) x 4
Cooling
Forced air cooling
工作溫度
-10 °C to +40 °C (14 °F to 104 °F)
工作濕度
90 %RH or less (no condensation)
外觀
Panel: Aluminum, black, alumite
Case: Plated steel sheet
Case: Plated steel sheet
尺寸
482 (W) x 88.4 (H) x 404.2 (D) mm (18.98 x 3.48" x 15.91")
重量
9 kg (19.84 lb)
附屬品
Power cord (2 m (6.56 ft) …1, Removable terminal plug (3 pins) …4,
Rack mounting screw (with washer) …4, Tamper-proof cap …4
Rack mounting screw (with washer) …4, Tamper-proof cap …4
選配品
Matching transformer: MT-251H
請下載資料以獲取完整規格。
The multi-channel power amplifier shall use digital class-D circuit topology and shall be configurable to allow two, three or four channel operation. Power output in four-channel mode with all channels driven shall be: 500 W at 100 V (20 ohms). Total harmonic distortion (THD) shall be less than 0.1% @ 1 kHz, 0.3 % (100 to 20,000 Hz). The frequency response shall be 50 to 20,000 Hz (4 dB). The crosstalk shall be 70 dB (A-weighted). The input impedance shall be 10k ohms for each input into an electronically balanced input circuit. Rear panel switches shall allow selection of bridged operation for each pair of channel (1-2 and 3-4) independent of the status of the other pair of channels. A rear channel input mode switch shall allow the selection of input 1 to all mode, whereby the signal from input 1 is simultaneously fed to all other channels. Each input shall feature a 3 pin phoenix block and XLR connector. Rear panel output connector shall be a heavy gauge M4 screw-terminal barrier strip suitable for use with spade lugs or up to #12 AWG bare wires.The front panel attenuators shall be recessed to prevent accidental level changes and may be removed and replaced by included security covers once levels have been properly set. The front panel shall have four sets of four LED indicators to indicate the following conditions: signal presence at input (greater than -20 dB), signal presence at output (greater than 1 W @ 20 ohms load), peak clipping, and protection circuit activation. The front panel shall also have four removable air filters that may be removed for cleaning without removing the amplifier from the rack. The amplifier shall be forced-air fan cooled with the air intake at the front and exhaust at the rear.
Built-in protection circuitry shall monitor voltage and current levels to minimize potential damage from overloads and disable output during shorts, DC offset or excessive operating temperature at power amp heat sink over 100°C or excessive operating temperature at power supply heat sink over 80°C via a relay for each channel. The relay shall also delay amplifier connection to the load during turn-on for about 2 seconds, so as to prevent any occurrence of noise at turn-on. Power consumption shall be 460W (based on EN standards) and 2350W (rated output 8ohm x 4 channels). Each channel shall be equipped with control/monitor terminals to permit power on/off control of each channel, status monitoring of power on/off and protection for each channel and fan operation. The control panel and monitor display shall be a custom made non-TOA piece. The control/monitor connection shall be made via two RJ-45 connectors. The amplifier shall use two standard rack-spaces or 88.4 mm and its dimensions shall be 482 (W) x 88.4 (H) x 404.2 (D) mm. Front panel finish shall be black anodized aluminum and case finish shall be sheet steel. Weight shall be 9 kg.
The amplifier shall be a TOA model DA-500FH.
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