[scottmandue]

A couple weeks ago I installed in my car, all new:
Kenwood head-unit (bluetooth, HD radio, AUX/USB)
MBQuart 6 1/2" coaxial door speakers (no crossover)
Soundstream Rubicon 130 watt RMS stereo power amp

I am getting static/crunching sound on the left channel.

Here is the weird thing, it only happens for a minute or two, then when things seem to "warm up" it goes away and everything sounds fine.

When the noise is there, if I switch inputs from radio to AUX/USB it goes away, also when I turn up the volume the static doesn't seem to increase.

I have already checked the connections.

As a test I am going to plug my android phone into the RCA connectors on the power amp and test it while cold to see if I hear any static.

Thoughts?

I am a tech so I could open the power amp and look for a bad capacitor or cold solder joint.

TIA