I can only get sound out of 2 speakers with a 4 channel amp

[Steven Pfarr]

I just finished installing a 4 channel amp into my car and I can only get 2 channels to work. I have a skar audio RP-75.4AB 500w amp, and a pioneer s322bt head unit. In addition to that i have a 2 channel amp running a sub. I have been using the head unit to power the 4 door speakers but it did not have the power necessary to do so. It has 2 sets of rcas one for the sub and a second I ran back to the skar amp and split it to hook up to the 4 channels. after doing so the amp would play out of to speakers no matter what configuration i moved the rca inputs to, sometimes it only played out of 1 speaker. The rca output on the head unit is for full range front speakers is that the problem am I not able to split it to run both front and back speakers?

Click to read more...

 

[Steven Pfarr]

Could I just connect the 2 non working speakers to the working ones?
or would I have to buy a line output converter for the rear set and the run another rca?

 

[2RZ-FE 10+ year member]

Put the RCA’s on channel 1 or A whatever it’s labeled I’m too lazy to look and is there a switch to go from two channels to four channel mode?

Don’t daisy chain speakers like that

 

[1aespinoza Premium Member]

Could I just connect the 2 non working speakers to the working ones?
or would I have to buy a line output converter for the rear set and the run another rca?

Have you checked that the Gains are up?

 

[Steven Pfarr]

Put the RCA’s on channel 1 or A whatever it’s labeled I’m too lazy to look and is there a switch to go from two channels to four channel mode?

Don’t daisy chain speakers like that

There is no switch. Is there a way to get the signal to go into all 4?

 

[Steven Pfarr]

Have you checked that the Gains are up?

Yes, it apears that whatever the left rca is hooked to plays. Since I have a splitter it plays 2 channels.

 

[1aespinoza Premium Member]

Yes, it apears that whatever the left rca is hooked to plays. Since I have a splitter it plays 2 channels.

So you swapped the left RCAs to the right and had no sound?

 

[Grimmjoww]

Yes, it apears that whatever the left rca is hooked to plays. Since I have a splitter it plays 2 channels.

1 and 2 are one set, 3 and 4 are the other set. Make sure you have 1 nd 3 together and 2 and 4 together if that makes sense.

 

[Steven Pfarr]

turns out the "new" rca had a bad side.

 

[Grimmjoww]

turns out the "new" rca had a bad side.

That can happen, get a good new set and your golden.