I’ve installed a system in my a6 today and would need a few tips of you I don’t know if I’ve also built something right in an ea2500d 2ch digital amplifier receiver digital monoblock with 2200 watts a Jbl 1000watt subwoofer. so now I still have 2 speakers from jbl that I connected to a 2nd level a signup 4 times 80w and when I turn on the radio I have a loud whistle in the car when I give gas this will be even louder and what I still need wanted to stand out if I need an extra subwoofer because I was told that the jbl bassbox with 1000 watts which will not last long because of the high power of the nstage would look forward to a few tips like I could do better or if I have to buy what to buy so that not all after 2 days burns through as at the last time