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<blockquote data-quote="keep_hope_alive" data-source="post: 8357714" data-attributes="member: 576029">people commonly think that in order to be &quot;active&quot; they need a head unit or DSP.&nbsp; in reality, running active just means using electronic crossovers.&nbsp; these can live in external boxes or inside amps.&nbsp; your amps already have flexible crossovers and they will be better than what&#039;s in the head unit.&nbsp; &nbsp; Your SAX-100.4D has the crossovers to run mids and highs active, the SAE 50-4 does not.&nbsp; Get another SAX amplifier or use the SAE 50-4 to run the midbass bridged (one each) and use the SAX-100.4D to power the mids and highs active.SAX-100.4DLow pass frequency crossover50Hz~5kHz (CH1&amp;amp;2)50Hz~5KHz (CH3&amp;amp;4)(50-500 with x10 switch)Selectable 12 or 24 dB slopeHigh Pass Crossover50Hz~5kHz (CH1&amp;amp;2)50Hz~5kHz (CH3&amp;amp;4)(50-500 with x10 switch)Selectable 12 or 24 dB slopeSAE-50-4HPF or LPF40-400Hz</blockquote>

[QUOTE="keep_hope_alive, post: 8357714, member: 576029"] people commonly think that in order to be "active" they need a head unit or DSP. in reality, running active just means using electronic crossovers. these can live in external boxes or inside amps. your amps already have flexible crossovers and they will be better than what's in the head unit. Your SAX-100.4D has the crossovers to run mids and highs active, the SAE 50-4 does not. Get another SAX amplifier or use the SAE 50-4 to run the midbass bridged (one each) and use the SAX-100.4D to power the mids and highs active. SAX-100.4D Low pass frequency crossover 50Hz~5kHz (CH1&2) 50Hz~5KHz (CH3&4) (50-500 with x10 switch) Selectable 12 or 24 dB slope High Pass Crossover 50Hz~5kHz (CH1&2) 50Hz~5kHz (CH3&4) (50-500 with x10 switch) Selectable 12 or 24 dB slope SAE-50-4 HPF or LPF 40-400Hz [/QUOTE]

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