@Papalag was saying his Vivosun fan died, I have one of their cheap $50 ones and it’s still holding up as a booster but it’s not that well made compared to the AC Infinity I upgraded to. Paps, maybe you can get an AC through one of the members here who’s a vendor for them like @Ris ?
I think using an 8" Cloudline, ducted down to 6" if you need to, would reduce your noise a lot besides the oversized fan running lower and the EC motor being much quieter than my Vivosun.