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美国皇冠CROWN:CDi-4000 音频功率放大器
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美国皇冠CROWN CDi-4000 专业音频功率放大器
CDi功放具有预置扬声器分频频率、EQ、压缩∕限幅、延时和次低音频率合等功能的DSP处理的LCD液晶显示屏。此外，它还包括采用开关***供电装置、巧能指示器、比例变速冷却通风装置和便于连接的凤凰输入接线端口和低阻抗或70V∕140V高阻扬声器负载的输出接线端子，及各种可靠、完善的保护装置。皇冠3年保用承诺。
特点：
失真极微、***、无染色、逼真自然的音乐和语声重放，高频过载和内部缺损保护电路。
具有多功能应用的处理能力。扬声器的阻力抗变化范围宽，输出功率大小可以控制。
采用开关电路的***供电电源。
前面板LCD显示的DSP综合数字处理器。
扬声器分频频率预设、EQ、压缩／限幅、延时和次低频谐波合成器。
2U高的机架，重量低于19磅。
低阻抗或70V／140V输出螺丝接线端子和可拆卸的凤凰输入端口。
额定功率:
单双信道模式
2欧姆，双路(每通道) 1600w*
4欧姆，双路(每通道) 1200w
8欧姆，双路(每通道) 650w
70V双路(每通道) 1000w
4欧姆，桥接单通道 3200w*
140V，桥接单通道 2000w
总谐波失真为1%，其余为0.5%
技术规格:
电压增益 (1kHz、8Ω额定巧率输出)
CDi 4000：34.2dB
频率向应 20Hz ～ 20kHz ±0.25dB (1w/4Ω
相位向应 ±15° (1w、20Hz ～ 20kHz)
负载阻抗 立体声模式的额定负载为2 - 8奥姆:；
桥接单声道模式的额定负载为4 - 16奥姆。
额定输入电平 1.4V
信号噪声比 105Db (A计权) (8Ω负载额定输出功率、1kHz)
阻尼系数 优于500(20Hz - 500Hz)
通道间窜音 大于80dB (额定输出功率、20Hz - 1kHz)
共模抑制比 (CRM) >45dB (20Hz 1kHz)
输入电路 电子平衡输入 (1%精密雹电阻)
输入阻抗 平衡输入时20KΩ
不平衡输入时10KΩ
交流电源 100V，120V – 240V，50Hz/60Hz
工作温度 0° - 40°，相对温度95%
尺寸 宽 (EIA RS-310-B)；高3.5英寸 (8.9cm) ；深12.25英寸 (31.11cm)
重量 19磅 (8.6kg)
运输重量 22磅 (10kg)
Crown CDi Series amplifiers are professional tools designed and built for installed Sound applications. The series includes four models which are identical except for output power: CDi 1000, CDi 2000, CDi 4000, and CDi 6000. All are rugged and lightweight, and offer unmatched value in their class.
Output Power:
2 Ohm Dual (per Channel): 1,600W
4 Ohm Dual (per Channel): 1,200W
8 Ohm Dual (per Channel): 650W
4 Ohm Bridge-Mono: 3,200W
70V Dual (per Channel): 1,000W
140V Bridge-Mono: 2,000W
Features:
Extremely versatile; rated for 2-, 4-, 8-Ohm loads and 70V and 140V outputs.
Switch-mode universal power supply.
Intuitive front-panel LCD screen for quick, easy configuration.
Onboard Digital Signal Processing includes crossovers, EQ filters, Delay, and output limiting.
Up to 20 user defined DSP presets are available.
Specifications:
Frequency Response (at 1 Watt into 4 Ohms, 20Hz - 20 kHz): +0/ dB
Signal to Noise Ratio (below rated 8-Ohm power at 1 kHz, A-Weighted): 100 dB
Damping Factor (8 Ohm): 20 Hz to 400 Hz: > 500
Input Stage: Input is electronically Balanced and employs precision 1% resistors
AC Line Current:CDi 1000: 11.50A, CDi 2000: 11.93A, CDi 4000: 11.75AAt idle: Draws no more than 45 Watts.
Crosstalk (below rated power) 20 Hz to 1 kHz: > 70 dB
Input Impedance (nominal): 20 kilohms Balanced, 10 kilohms Unbalanced
Load Impedance (note: safe with all types of loads):Dual: 2 ohmsBridge Mono: 46 Ohms
Voltage Gain (at 1 kHz, 8 Ohm rated output): CDi 1000: 30.5 dB, CDi 2000: 32.9 dB, CDi 4000: 34.2 dB
Sensitivity (at 8 Ohm rated output): 1.4V
Maximum Input Signal: +22 dBu typical
Operating Temperature: 0?C to 40?C at 95% relative humidity (non-condensing)
AC Line Voltage and Frequency Configurations Available (?10%): 100V, 120V-240V, 50/60 Hz
Ventilation: Flow-through ventilation from front to back
Cooling: Heat sinks and proportional-speed fan
Dimensions: Width, Height, Depth (behind mounting surface):EIA Standard 19 in. Wide (EIA RS-310-B) x 3.5 in. (8.9 cm) High x 12.25 in. (31.1cm) DeepCDi 6000 is 16.2 in. (41.15 cm) deep.
Net Weight:CDi 1000, CDi 2000, CDi 4000: 19 lb (8.6 kg).CDi 6000: 24 lb (10.9 kg).
Shipping Weight:CDi 1000, CDi 2000, CDi 4000: 22 lb (10.0 kg).CDi 6000: 30 lb (13.6 kg).
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