Thermal shutdown? (ktp-445u)

[Chimera]

So I'm running a ktp445u and have a problem recently, I suspect is temperature related, but want some 2nd opinions on. Last 2 days twice now the left channels cut out. I turned down volume both times and switched to an audio book. Been listening to 'off to be the wizard. ' anyways, today was a longer drive. A few minutes after the left channels shut down I was getting a pretty noticeable alternator whine from the left side. Then a while after that the left side came back. Startin the car after its been off for awhile I have yet to have this issue. Sound like thermal shutdown to y'all?

Ps: ACs been off during both occurrences

[swarb]

Originally Posted by Chimera

So I'm running a ktp445u and have a problem recently, I suspect is temperature related, but want some 2nd opinions on. Last 2 days twice now the left channels cut out. I turned down volume both times and switched to an audio book. Been listening to 'off to be the wizard. ' anyways, today was a longer drive. A few minutes after the left channels shut down I was getting a pretty noticeable alternator whine from the left side. Then a while after that the left side came back. Startin the car after its been off for awhile I have yet to have this issue. Sound like thermal shutdown to y'all?

Ps: ACs been off during both occurrences

I have one and the right channel has shut down on me twice this past summer. I have mine tucked where the stock location is under the trunk covers. It would go dim/half power before it shut off. I assumed it was thermal shutdown because it was over 100f outside. My temp gauge said over 110f. I am running it 2channel x 45 watts. Considering running it at 2x90 but I read the stock speakers are already at 2ohms.

[Mr.ac]

Yep sounds like thermal protection kicking in.
Try making some room around the amp for increased air flow or turn down the gain a few notches.