Issue with subs and Hifonics amp

[mobbdeep]

Hello,

I just swapped out my Alpine amp for a Hifonics Brutus BRX116.1D amp that's pushing both of my Rockford Fosgate P2 subs. I also hooked up the bass knob for it then went to my local car audio place to get it tuned with my deck. All was well until I start playing my music after a few hours of no usage and it sounds good but then it's like the bass gets stuck and when I turn it down at the deck, the bass is still knocking out of my subs but at a single tone until I turn my bass knob all the way off.

Not sure what this could be.

Thanks!

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[Slo_Ride 5,000+ posts]

Go back to the shop and tell them this.

 

[mobbdeep]

Go back to the shop and tell them this.

I took it there today and they said there's nothing to do without charging me to go through and figure it out.. I tried checking the connection of the remote turn on wire but it still does it.

 

[mobbdeep]

Anyone have any idea of what this could be?

 

[dragon.breath 10+ year member]

That sounds like a ground loop. Check your grounds.

 

[Jeffdachef 5,000+ posts]

you'll just have to retrace your install and wiring. Do basic troubleshooting to narrow down the culprit. Is it power and grounds? Is it speaker shorts? Is it bad RCA wire? Bad amp? bad head unit? etc..
Some tools to help troubleshooting, a multi-meter to measure voltage and resistance, An aux to RCA y splitter to determine if its an RCA issue, head unit issue or if ground or speaker shorts.