Unverified82% confidenceDecision RuleTime unknown
低音炮与主箱衔接时，分频点通常设在主箱-3dB下限频率附近（书架箱常80-100Hz），相位调节以人声区最饱满、无空洞或叠加轰鸣为准
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Unverified低频下潜频率看厂商标注的-3dB下限，标称50Hz以下才算有真低频；很多小音箱标100Hz起，重低音其实是靠箱体共振和EQ拉起的假低音84% similarUnverified低音单元每增大1英寸（如从5.25"到6.5"），下潜频率约低5-8Hz，但箱体体积需增大约50%；追求40Hz以下低频优先选落地箱或加独立低音炮而非大书架箱82% similarUnverified隔音毯的隔声量随频率变化，低频（<250Hz）隔声远难于高频；标称的单一dB降噪值无意义，应看不同频率的隔声曲线，尤其关注100-500Hz低频段的表现81% similarUnverified书架式无源监听的低频延伸受限于单元口径，5寸单元-3dB点约55-60Hz，制作低频重的音乐需搭配超低音（sub），单靠书架监听会误判低频81% similarUnverified5寸监听低频下潜一般到45-50Hz，若需要完整听到电子乐/嘻哈的超低频(30Hz以下)，应搭配10寸有源低音炮而非盲目上8寸箱子80% similar
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