Wiring troubles and head unit issue

[obv_ius]

So I bought a five channel amp (Rockford fosgate r600x5) for my 4 6x9’s and a sub. My aftermarket head unit only has 4 channels. I want to add an rca out for my sub. I’ve seen line out converters, so would i need one and if so how would i go about wiring it? If there is another way to solve this issue I’d be happy to hear it.

(my amp rating is in a photo below)
My 6x9’s run 70w rms (300w peak)
Sub runs at 250w rms (500w peak)

my next issue is wiring my 4ohm 6x9’s to make a 2ohm load for each pair. I know I’d have to parallel them but the issue is that the negative and positive are already soldered (photos below). I don’t know how i need to wire them with the speaker wire to connect them to the amp because I’m not using the factory harness. I’m new to car audio and this is my first project which is why I run into so many issues. I just want to have everything in order before I take anything apart.

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[Popwarhomie 5,000+ posts]

Why are you trying to run them at 2 ohms and not just a 6x9 per channel at 4 ohms?

You can use RCA splitters on the rear RCAs to your amps rear and subwoofer inputs. Then use an RCA bass knob to control subwoofer volume.

You could get a 7 band EQ that has 4 inputs and 6 outputs. (NVX XEQ7)

Or a headunit with 3 sets of outputs.

 

[Bobbytwonames 5,000+ posts]

So I bought a five channel amp (Rockford fosgate r600x5) for my 4 6x9’s and a sub. My aftermarket head unit only has 4 channels. I want to add an rca out for my sub. I’ve seen line out converters, so would i need one and if so how would i go about wiring it? If there is another way to solve this issue I’d be happy to hear it.

(my amp rating is in a photo below)
My 6x9’s run 70w rms (300w peak)
Sub runs at 250w rms (500w peak)

my next issue is wiring my 4ohm 6x9’s to make a 2ohm load for each pair. I know I’d have to parallel them but the issue is that the negative and positive are already soldered (photos below). I don’t know how i need to wire them with the speaker wire to connect them to the amp because I’m not using the factory harness. I’m new to car audio and this is my first project which is why I run into so many issues. I just want to have everything in order before I take anything apart.

Which aftermarket headunit?

 

[huberoy123 10+ year member]

As it relates to the first issue, I used a Y-adapter for one set of RCA cables. That provided me with a signal for channel 5, (or another amplifier).

As it relates to your second issue, not sure why you would be concerned about the speaker's terminals already being wired positive and negative. Speaker wire - Positive to positive and negative to negative. See diagram.

Let me know if I got your issues totally wrong. Just trying to help.

 

[huberoy123 10+ year member]

Sorry, the site went blank, and wouldn't let me on. Then it repeated my posts.

 

[obv_ius]

Which aftermarket headunit?

Pioneer 6.2" VGA Touchscreen... https://www.amazon.com/dp/B01LXHZ3X1/?tag=caraudiocom-20

 

[obv_ius]

As it relates to the first issue, I used a Y-adapter for one set of RCA cables. That provided me with a signal for channel 5, (or another amplifier).

As it relates to your second issue, not sure why you would be concerned about the speaker's terminals already being wired positive and negative. Speaker wire - Positive to positive and negative to negative. See diagram.


View attachment 23255

Let me know if I got your issues totally wrong. Just trying to help.

Would those 2 speakers now be 1 channel in the amp?

 

[huberoy123 10+ year member]

As described in the diagram, those 2 speakers will be dedicated the channel that you attach it to.

 

[obv_ius]

As it relates to the first issue, I used a Y-adapter for one set of RCA cables. That provided me with a signal for channel 5, (or another amplifier).

As it relates to your second issue, not sure why you would be concerned about the speaker's terminals already being wired positive and negative. Speaker wire - Positive to positive and negative to negative. See diagram.


View attachment 23255

Let me know if I got your issues totally wrong. Just trying to help.

I have more questions. Would i use 1 female to 2 male rca y cable. And would i only need to do this with only one of the rear speakers?

 

[1aespinoza 10+ year member]

I have more questions. Would i use 1 female to 2 male rca y cable. And would i only need to do this with only one of the rear speakers?

A 5 channel amplifier only needs one set of rcas to produce 5 channels. Only reason to use two sets of rcas is if you want to have the fade option. As for the sub channel, the amp does that on it's own.

 

[1aespinoza 10+ year member]

Would those 2 speakers now be 1 channel in the amp?

Each 6x9 will go to it's own channel. The soldered wire belongs to the tweeter. There is no useful way to turn a single speaker into 2ohms from 4ohms. I think that 4 6x9s will be plenty loud even in 4ohms configuration.

 

[1aespinoza 10+ year member]

I have more questions. Would i use 1 female to 2 male rca y cable. And would i only need to do this with only one of the rear speakers?

Put the switch in the 2CH. if you run two rcas or 4CH. if you run 4 rcas. You will still get signal to the sub whichever you choose.