I refitted the standard Concert yesterday but when I connected it up I still had the key in the ignition after turning it off. At the time there was a pop (which sounded like the remote pop you'd get with aftermarket amps and subs fitted). Now each time I turn the car/radio on, the pop can be heard. I have Bose in my car. Anyone any ideas? I left the radio out last night in the hope that it would have cleared over night, but its still doing it. Have I damaged something?