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<blockquote data-quote="geowick07" data-source="post: 4483860" data-attributes="member: 568423">&quot;Active&quot; is the opposite of passive, and it is directed at component speaker installation.Passive setups utilize an external crossover which is installed between the amplifier and speakers.&nbsp; It depicts which frequencies each speaker sees AFTER amplification, which can result in lower SQ and gives less room for tweaking.&nbsp; These setups require a 2-channel amplifier.Active setups require a 4-channel amplifier, as you wire each speaker (both tweeters and both woofers) to their own channel.&nbsp; The signal needs to be crossed over via an external crossover or via your HU (the main reason for your post.) You need to be able to cross the tweeter to only play (as an example) above 2.5Khz.&nbsp; You also need to bandpass the mid to play (also, just an example) below 2.5Khz and above 100hz.&nbsp; (Basically, you cross the mid at the same point your sub is low-passed at.)&nbsp; The crossing over takes place BEFORE amplification, which helps with SQ and leaves more room for tweaking.Sorry for the long-winded answer, but I would rather explain the whole deal than to just give a one-sentence answer.&nbsp; Explanation FTW!</blockquote>

[QUOTE="geowick07, post: 4483860, member: 568423"] "Active" is the opposite of passive, and it is directed at component speaker installation. Passive setups utilize an external crossover which is installed between the amplifier and speakers. It depicts which frequencies each speaker sees AFTER amplification, which can result in lower SQ and gives less room for tweaking. These setups require a 2-channel amplifier. Active setups require a 4-channel amplifier, as you wire each speaker (both tweeters and both woofers) to their own channel. The signal needs to be crossed over via an external crossover or via your HU (the main reason for your post.) You need to be able to cross the tweeter to only play (as an example) above 2.5Khz. You also need to bandpass the mid to play (also, just an example) below 2.5Khz and above 100hz. (Basically, you cross the mid at the same point your sub is low-passed at.) The crossing over takes place BEFORE amplification, which helps with SQ and leaves more room for tweaking. Sorry for the long-winded answer, but I would rather explain the whole deal than to just give a one-sentence answer. Explanation FTW! [/QUOTE]

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