View attachment 42020 View attachment 42020 Hi, i own a nice RS250, with retrofitted RS Monitor. Now i connected my woofer to a good grounding point in the boot. And 12V straight to the battery. I use the High input in my amp so i can keep the stock radio, since it had no RCA output. the problem is. The woofer works amazing when the car is turned off. When i turn it on i hear the exhaust / engine in the woofer. When i rev the car, the frequency follows.. i used the speaker wire from the rear speakers. Any suggestions? Dont know what to do, almost tried everything.