Unverified80% confidenceDecision RuleTime unknown
AV功放的每声道额定功率需与音箱灵敏度和阻抗匹配，低灵敏度（＜87dB）或4欧姆低阻音箱需要更大功率储备的功放驱动，功率不足会导致大动态时声音发闷、失真
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Unverified无源音箱（需搭配功放）灵敏度＜86dB时，功放输出功率建议≥100W/8Ω，否则大动态时推力不足声音发闷82% similarUnverified灵敏度≥88dB的音箱易被小功率功放推响，灵敏度<85dB的音箱（多为低阻高解析款）需更大功率储备，小房间近场监听可接受较低灵敏度换取解析力81% similarUnverified喇叭灵敏度越高越易被小功率主机推响但动态压缩，灵敏度低（88dB以下）的喇叭素质高但必须配大功率功放，用原车主机直推会觉得声音发软无力81% similarUnverified4欧姆低阻抗书架箱对功放电流输出要求高，入门AV功放或数字小功放驱动4欧箱易触发保护或音质劣化，建议搭配对4欧稳定的两声道合并机81% similarUnverified音量控制的通道平衡度在低电平时最关键：普通电位器在小音量（衰减-40dB以下）时左右声道偏差可达2-3dB，导致声像偏移。追求精度应选择继电器切换的步进衰减器或R-2R电阻阵列音控，通道误差可控制在0.05dB内80% similar
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