Sub cuts out randomly, and always when I brake or Accelerate to fast.

[Jackson D]

I have a Kenwood 100W head unit controlling two 5" round and two 6X9" Pioneer speakers. I have my RCA cables run to a Jensen 300 W amp which controls a 10" Kicker sub. Whenever I accelerate too fast or brake too fast it cuts out and doesn't come back for a couple minutes. My head unit will sometimes loose power completely, but it comes right back. I have checked all my connections, I have a good connection on my ground. The speakers themselves are not affected in any way, only the amp and sub. What could cause this? Would it be inconsistent voltage from the battery? I do have a new alternator because the old one had inconsistent voltage.

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[metalheadjoe 10+ year member]

What are your remote connections wired to? Possibly a/c cutout relay?

 

[1aespinoza 10+ year member]

, I have a good connection on my ground

With the radio on, try moving the sub and amp around. It sounds like a loose wire. Also try this on the battery terminals.

 

[Jackson D]

With the radio on, try moving the sub and amp around. It sounds like a loose wire. Also try this on the battery terminals.

No luck there, it still did the same thing cutting in and out. Thanks though

 

[Jackson D]

What are your remote connections wired to? Possibly a/c cutout relay?

Its connected to my power antenna like it says to do in the manual. Is that wrong?

 

[metalheadjoe 10+ year member]

With the radio on, try moving the sub and amp around. It sounds like a loose wire. Also try this on the battery terminals.

Loose wire on sub and amp would not cause head unit to cut out. Loose battery terminal would affect more than the stereo.

 

[metalheadjoe 10+ year member]

Its connected to my power antenna like it says to do in the manual. Is that wrong?

Remote should be connected to a source that comes on with ignition. I don't know how it works hooked up to power antenna.

 

[Jackson D]

Remote should be connected to a source that comes on with ignition. I don't know how it works hooked up to power antenna.

We tested the wire and it had power from the ignition as soon as we turned the key, and it kept power. Maybe its just not enough power?

 

[Buck 5,000+ posts]

If it’s not a simple thing you find, try checking the harness pins on the back of the radio. Sometimes those can pull out some and do this.

 

[1aespinoza 10+ year member]

No luck there, it still did the same thing cutting in and out. Thanks though

Did it do it when you wiggled one of those things?
On another another note, AFAIK, antenna only comes on when listening to the radio.

 

[Jackson D]

Did it do it when you wiggled one of those things?

No, it stayed on while I wiggled and moved the sub and the amp, and I tried all the connections just in case.

 

[Jackson D]

Did it do it when you wiggled one of those things?
On another another note, AFAIK, antenna only comes on when listening to the radio.

Maybe I should try another wire then. That might be my problem.

 

[Jimi77 5,000+ posts]

We tested the wire and it had power from the ignition as soon as we turned the key, and it kept power. Maybe its just not enough power?

There is a possibility that it will shut off when you switch to CD or a source other than the radio.

I'd guess loose connection. Check the fuse holder.

 

[Jackson D]

I just went and drove it around waiting for the sub to loose power, and as soon as it did I grabbed my 6-12 volt test light and tested the different connections to and from the amp. It has power going in from the main power and the remote power wire, but the LED lights on the amp are off and the sub wires have no power. That means that the amp has something wrong with it right?

 

[1aespinoza 10+ year member]

That means that the amp has something wrong with it right

Maybe a bad ground point. A week ago another user had the same issue (sans radio issue). It was a bad ground.