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Message: <blockquote data-quote="T3mpest" data-source="post: 2438217" data-attributes="member: 560148"><p>Some HU's have built in processing.  Perhaps your older hu had a built in bass boost, without even hitting a button?  Again, a lower preout won't make a difference.  Assumng you set your gains properly, the amp was still putting out it's RMS, it was just doing it with a lower input voltage.  However, Xwatts=xwatts, regardless.  Your DMM settings confirmed this.  It doesn't matter what signal comes out of the hu, only what singal the amp is receiving, which in this case was still the same voltage as you had before.  Loudness usually boosts the bass region and the top end, basically your tweets and sub's frequency range is boosted.</p></blockquote><p></p>

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