6 channel amp with only 4 RCA outputs from the head unit

[CAPTAINJEH 10+ year member]

Howdy, what's the best way to get this hooked up?

My head unit has front L&R and rear L&R RCA outputs and the amp has 6 RCA inputs. This is for 6 regular speakers no subs involved.

Thanks, Jason

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[fasfocus00 5,000+ posts]

get an amp that has selectable inputs.

 

[fly_marlin]

Get 2 of these:

Krystal Kable Twisted Pair Y Adapter 1F2M - Merchandise

Run 4ch RCAs from the head unit, then connect the above adapter to 2 of the channels, which will make 6 total.

 

[mclerico83 5,000+ posts]

Get 2 of these:
Krystal Kable Twisted Pair Y Adapter 1F2M - Merchandise

Run 4ch RCAs from the head unit, then connect the above adapter to 2 of the channels, which will make 6 total.

x2

 

[CAPTAINJEH 10+ year member]

perfect that's what I was hoping to hear. Funny part is I have the stuff to do it the opposite way by using the splitter at the head unit. 1m to 2f then running a total of 6 RCAs. Guess that's kind of backwards but sounds like the same thing.

 

[CAPTAINJEH 10+ year member]

Or will that lose to much signal strength and it's better to split right before plugging into the amp?

 

[fly_marlin]

It's the same. I posted the link to 1F2M, you're going to use 1M2F at the HU.

 

[CAPTAINJEH 10+ year member]

Thanks sounds like I'm good then I'll use what I got and split at head unit instead of buying more crap.

Jason

 

[trumpet 5,000+ posts]

Jason, what amplifier do you have?

 

[CAPTAINJEH 10+ year member]

MB Quart - Nautic - NA540.6

 

[trumpet 5,000+ posts]

Check the installation manual, I bet you can set that to 2ch or 4 ch and it will copy the inputs to all 6 channels.

 

[CAPTAINJEH 10+ year member]

Yeah you can but I was hoping to separate the front 2 speakers from the 4 rear. This is on a boat and the 2 bow speakers can sometimes be annoying to the people sitting up there when things are louder. so with this y adapter plan i think the fader will work properly?

 

[gimling]

Yes the Y adapter method will work

 

[n2audio 5,000+ posts]

Yeah you can but I was hoping to separate the front 2 speakers from the 4 rear. This is on a boat and the 2 bow speakers can sometimes be annoying to the people sitting up there when things are louder. so with this y adapter plan i think the fader will work properly?

You can do that w/o y cables.

Set it to the 4 ch mode. That will either have 1/2 on it's own and 3/4/5/6 together or the other way around.

Just figure out which two channels operate independently and connect those to the bow speakers.

 

[CAPTAINJEH 10+ year member]

cool thanks I didn't know it works that way I'll try it out!