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<blockquote data-quote="helotaxi" data-source="post: 3741161" data-attributes="member: 550915"><p>You need the HPF on the amp. The passive crossover typically doesn't keep the lows out of the mid, it only divides the freqs between the mid and the tweet. There is no hard and fast rule on where the filter on the amp should be set, though. Every system, car and install will need a different freq. There is no reason to set the sub amp and high amp to the same freq. In fact that will usually result in a peak in the frequency response at that point. A bit of underlap is usually best.</p></blockquote><p></p>
[QUOTE="helotaxi, post: 3741161, member: 550915"] You need the HPF on the amp. The passive crossover typically doesn't keep the lows out of the mid, it only divides the freqs between the mid and the tweet. There is no hard and fast rule on where the filter on the amp should be set, though. Every system, car and install will need a different freq. There is no reason to set the sub amp and high amp to the same freq. In fact that will usually result in a peak in the frequency response at that point. A bit of underlap is usually best. [/QUOTE]
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