Unverified85% confidenceDecision RuleTime unknown
背景音乐主机功放的每路输出功率应≥所接喇叭总功率的1.2-1.5倍，避免长时间大音量导致过热保护或音质失真
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85%
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Long-term
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Unverified功放输出功率应为音箱额定功率的1.5-2倍以保留动态余量，功率不足时大音量下削波失真反而更容易烧毁高音单元，选大功率功放搭配小功率音箱比反过来更安全80% similarUnverified声道数与功率呈反比权衡：同价位下9.2声道机型每声道功率和用料通常不如5.2声道，追求听感纯净优先声道少而功率足，追求环绕包围感才上多声道79% similarUnverified标称功率要看'全声道同时驱动'的连续功率而非'单声道峰值'，入门功放的单声道峰值虚标严重，7声道全开时实际每声道往往只剩标称值的1/378% similarUnverified追求音质应看扬声器配置与功率：单元数量≥2（高音+低音分频）、总功率≥20W才有明显低频下潜，单全频喇叭的入门音箱只能满足语音播报和背景音乐77% similar
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