Gen 4 speakers

Hey
I got some aftermarket front speakers awhile back for my 2022 gen 4 jimny

They sound good but occasionally stop working every so often and I can go without any music for a week at times and then it starts working again?

The headunit is still stock.
I had suzuki look at it thinking it was a faulty headunit, they replaced it with a new one but same issue?

They then plugged stock speakers back in and it they worked.

But

I've left my speakers i bought in it currently until.i possibly buy a new headunit and that may solve the problem.

The speakers are a infinity REF-5032CFX,  3 ohm speaker.

Is the 3 ohm impedance an issue with the stock headunit?

Im.just confused as it sometimes works but then out of the blue the music just stops for a few days to possibly a week then kinda just starts again?

Possibly a volume thing?
3ohm speakers will draw more current than the 4ohm speakers it was designed for (someone will have to correct me if I'm wrong on that, it's been a while since I upgraded mine)
Assuming that's the case, the head unit may not like the extra current draw and is cutting out. 
Either a new head unit or swapping to 4ohm speakers should fix it. 

Not sure about the gen4 but I know the gen 3 head units are not that powerful. 

That's just my experience working with my gen3.