Car radio running to hot

[Dan93]

Hello everyone, sorry if I posted this in the wrong area of the forum I am new here and was not sure. I’m posting cause I have an odd issue that I am running into on one of my projects. I am installing a new head unit (cd/dvd) combo in an pop up camper that had never had one to begin with. Long story short I have 4 speaker channels 2 for indoors and 2 for outdoor marine speakers. So I would not have to deal with altering the sound stage manually to turn off the outdoor speakers I put each one on it’s on 40watt toggle switch. When these are wired up however the radio gets HOT. My first thought is maybe the toggle switch’s are creating to much resistance but I don’t know. When I run the wires direct there are no issues. I’m at a loss here. Please any info would be great!

 

[barry]

a schematic/drawing/sketch would be a BIG help.

maybe you are overloading the output with all four speakers?

 

[Audioguru]

One way to turn off a speaker is to short it. Then the amplifier gets hot.