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<blockquote data-quote="Lasherž" data-source="post: 8705870" data-attributes="member: 679555">You&#039;re 100% correct, however the filtering that stock stereo systems do to each speaker is done at the head unit not passively on the speaker wire. So what this means is that your head unit has aggressive high pass filters on some speakers but not others direct from the HU, so recovering a clean bass signal (using LC7i&#039;s Acubass feature) from the speaker wires which receive very little bass frequencies is going to be significantly more difficult than recovering a clean bass signal from one that wasn&#039;t filtered in that way. It&#039;s like trying to resharpen an image that&#039;s been compressed, you&#039;re gonna end up with more noise. The 60hz test just basically prevents you from tapping the wrong speaker wires for a bass signal.With an LC7i if you get a single signal that&#039;s full range you may not need to tap more than 2 speakers (right and left) to generate all of your signal to the amplifier(s).</blockquote>

[QUOTE="Lasherž, post: 8705870, member: 679555"] You're 100% correct, however the filtering that stock stereo systems do to each speaker is done at the head unit not passively on the speaker wire. So what this means is that your head unit has aggressive high pass filters on some speakers but not others direct from the HU, so recovering a [B]clean[/B] bass signal (using LC7i's Acubass feature) from the speaker wires which receive very little bass frequencies is going to be significantly more difficult than recovering a clean bass signal from one that wasn't filtered in that way. It's like trying to resharpen an image that's been compressed, you're gonna end up with more noise. The 60hz test just basically prevents you from tapping the wrong speaker wires for a bass signal. With an LC7i if you get a single signal that's full range you may not need to tap more than 2 speakers (right and left) to generate all of your signal to the amplifier(s). [/QUOTE]

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