Hi all,anyone have any idea as to why my C70 convertible sound system is sounding c**p. When I slide the fader to front only it sounds so tinny an as if the sound is only coming from the tweeters up on the dash. I do not have the dash mounted centre speaker. I stripped out the boot yesterday and unplugged the amp (4x50) and all sound stopped,so this would signify to me that the amp is working so maybe it's the front output of the actual head unit that's knackered. When the fader is in it's central position,all front and rear speakers on, it seems to me there is slight sound coming from the door speakers but mostly it's from the dash mounted tweeters that sound is coming from.?? I don't want to bin the standard head unit as I'm aware the problems involved in trying to fit an after market unit due to problems with powering the factory amp? Anyone any ideas or have encountered this before and found a solution??