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Message: <blockquote data-quote="keep_hope_alive" data-source="post: 7460494" data-attributes="member: 576029">bi-amp is when your crossover has two sets of inputs, typically with jumpers between them for normal operation.  it allows you to have separate amp channels for woofer and tweeter while using the passive crossover.why do this?  better level control between the two with the ability to use time alignment for the woofer and tweeter separately.  it's not "active" and you still have the inherent issues with passive crossovers.  it's less efficient than active since the amps are still playing a full range signal.</blockquote>

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