Troubleshooting Speaker Problem

[Shane Griffith]

I have a F150 with the factory head unit that feeds the high level inputs of a small 4-channel amp. I recently added a powered subwoofer. It also has high level inputs, so I spliced the rear speaker wires from the head unit to use as the input for the rear channels and to the sub. It worked great for about a month, and then no sound from any speaker yesterday.

If disconnect the sub, all four speakers sound great. If i disconnect the rear speakers, the front speakers and sub sound great. If I connect all of them, I get no sound from any speaker. Any ideas?!

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[Jimi77 5,000+ posts]

I'd check all the wiring on the rear channels. I'd guess a short somewhere. What equipment are we dealing with?

 

[spokey9 5,000+ posts]

Sounds like a connection for your sub worked loose somewhere to me

 

[Shane Griffith]

I'd check all the wiring on the rear channels. I'd guess a short somewhere. What equipment are we dealing with?

I'd check all the wiring on the rear channels. I'd guess a short somewhere. What equipment are we dealing with?

The sub is a Kicker HS8, the other amp is a Kenwood KAC-M3004. Factory head unit, and Polk DB 571 speakers.

I didn’t find a short anyone where the inputs or outputs. Every individual component works great. Just can’t get them to all work at the same time!

 

[Jimi77 5,000+ posts]

The sub is a Kicker HS8, the other amp is a Kenwood KAC-M3004. Factory head unit, and Polk DB 571 speakers.

I didn’t find a short anyone where the inputs or outputs. Every individual component works great. Just can’t get them to all work at the same time!

Are protection lights coming on either of the amps? How did you splice into the speaker wires; twisted wires or some sort of connector or a plug and play harness?

 

[RobGMN 5,000+ posts]

Wondering if the built-in LOC could have failed. Maybe pick up a separate LOC and use that as a test.