Why is my bass knob power light flashing

[Nugg32 10+ year member]

I've had my subwoofer installed for just over 2 years now with no issues. Now when I start my car (No music playing) The power light on my bass knob flashes and I can hear my subwoofer slightly thumping. I've checked the ground and the power cables but can't figure out what is causing it. The clipping light doesn't flash red, just the power light. I attached a video of this. You can't hear the thumping because it's very low. The amp I'm using is a Sundown SAZ 1500D and I'm using the bass knob that came with that amp. This issue happens almost every time I start my car, but it will be completely fine once in a while. however, when I do play audio, the music doesn't skip or cut out at all but the power light will still be flickering.

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[spokey9 5,000+ posts]

Is the power light on the amp doing the same thing?

 

[Nugg32 10+ year member]

Is the power light on the amp doing the same thing?

No, it stays solid

 

[spokey9 5,000+ posts]

No, it stays solid

Does sub make the thumping noise with base knob disconnected?

 

[Nugg32 10+ year member]

Does sub make the thumping noise with base knob disconnected?

Yes

 

[spokey9 5,000+ posts]

I had the fancy knob on my smart3 cause thumping that's why I asked. Since it's not just the knob I'd guess the amp itself is going out...but I'm no expert by any means. You might try contacting sundown and see if they can help you troubleshoot it.