PA-740
特点：
• 采用最先进的层级电源设计，大大提高输出效率。  
• 精心设计的"地输出"电路，配合大型散热器及变速散热风机，确保功率放大器在任何情况下都温升最低，可靠性最高，输出功率源源不绝。 
• 每个声道由独立电源供电，提供非常强劲的输出电流，提高了声道的分离度。 
• 设有完善的保护电路，包括压限保护、直流输出保护、输出短路保护、开机、关机冲击电流保护及温度保护，确保音响系统更安全可靠。 
• 工作状态指示灯，清楚显示每个声道的工作情况。 
• 备有两种卡侬输入插座，方便连接输入信号。使用国际安全标准设计的接线柱和音箱螺栓座SPENKON输出插座，确保输出连接牢固可靠。 
• 设有双声道，桥接及并接转换开关，以满足不同的使用要求。
 
8ΩStereo Output Power                     400WX2
4ΩStereo Output Power                     600WX2
2ΩStereo Output Power                     /
8ΩBridge Output Power                     1200W
4ΩBridge Output Power                     /
Frequency Response频率响应                  20Hz-20KHz,+0,-1dB at 1watt
THD+N(20Hz-20KHz)总谐波失真                 <0.1%20Hz-20KHz
Slew Rate转换速率                           ＞23V/μs
Damping Factor阻尼系数                      >500
Voltage Gain(8Ωrated power@ 0.775V)增益    33dB
Power Consumption 电力消耗                  8Aac 220 Vac
Signal to Noise Ratio信噪比(A加权)          103dB
Cross Talk分离度                            >60dB
Input Sensitivity(8Ω)灵敏度                8Ω，1.1Vrms 
Input Impedance输入阻抗                     20KΩ balance/10KΩunbalance平衡20K/不平衡10K
Cooling散热                                 1XAC FAN
Connectors 接口                             Input: XLR 输入: XLR; Output:Speakon, connector输  
                                            出:Speakon, 锁定式插孔 
Controls控制                                Front: AC switch,Ch1 and Ch2 gain knobs;  
                                            Rear:Sensitivity switch,GND switch,                
                                            Stereo/Parallel/Bridge switch, 30Hz Low cut  150Hz 
                                            Low pass switch 面板:电源开关，声道1、声道2声道增益控
                                            制； 
                                           
Indicators指示                              Front: STANDBY-orange LED,POWER-Blue LED,SIGNAL-Green 
                                            LED ,CLIP-Red LED ,PROT-Red LED; 
                                            LED 面板：电源用红光LED，信号用绿光LED，削峰用红光LED，
                                            保护用红光LED；
Amplifier Protection保护                    short circuit,thermal,over load,clip limiter,DC 
                                            voltage,soft start,ultrasonic and RF protection 具有
                                            短路、过载、过热、削峰压限、直流、软启动、继电器零电流开
                                            关、超音频和射频保护装置
Gross Weight/Net Weight毛重/净重            20kg/18kg
Packing Dimensions包装尺寸                  48.2X88X40cm
Power Requirements电源                      100V,120V,220V,240V,50-60Hz(按工厂要求配制)