Replacing Door Speakers - Range Help!

[zoltman1991]

Hi there!

I have a 2020 Lexus ES350.
I plan on replacing two front 3.5"s and two door 3.5"s and two front door 6x9s.

Right now, I have an ACX650.5 and I plan to run 50 watts into the four channels, then wire two SVC4ohm 6x9s to a 2ohm load on the 5th channel (full range outputs).
ALL KICKER KS series.

I swapped the 6x9s into the door, but I realised the factory amp was only sending low frequencies, so effectively was acting as a mid-range subwoofer.

My questions are:
-when I install, which speaker inputs should I use for the ACX650.5 to ensure the 6x9s have full range?

OR is it better to get the LC7i (I have a subwoofer set with JD1000.1, so then I can run the speaker inputs and have the 'sum' setting selected for the outputs on the 6x9s?

My reasoning is that I bought the KS 6x9 because I wanted better mids and highs, so I want to send them full frequency ranges.

I put myself in a pickle and thinking I may need to drop the ACX for a 4-channel amp and a 2-channel amp (likely Alpine A32 and Punch 500.2). This would force me to get the LC7i.

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[maylar 10+ year member]

I assume that the system has a factory amp somewhere? They have to hi-pass the 3.5's to keep them from blowing out, and they low-pass the 6X9's as you said. If you want full range you'd have to tap into the front HU outputs before the factory amp.

 

[1aespinoza Premium Member]

My questions are:
-when I install, which speaker inputs should I use for the ACX650.5 to ensure the 6x9s have full range?

If you want full range you'd have to tap into the front HU outputs before the factory amp.

You tap into the 3.5s and the 6x9s then use the summing feature. This will sum the 3.5 and 6x9 frequencies into a full range output.