As per title, I'm trying to locate the amp on my car, a 230k Coupe. I don't have the fancy Bose sound system, plain ole Nokia speakers. The reason is that the rear speakers don't work well. You can barely hear them at low volume, and if I turn the volume up, they sound like the membrane is broken, or as if the amp can't power them. Bass sounds more like an old man's fart, rather than deep, clean bass. Front speakers work fine, though. I already replaced the CD player, so that wasn't the issue. If there's an amp somewhere, it should be the main culprit. If not, and the speakers only rely on what the CD player is able to output, then I can only assume the rear speakers are fried (probably the coil, as the membrane looks fine). Does anyone have any suggestions to this issue? Is there an amp somewhere? If not, should I have a look at something else? I've been told the amp should be on the left hand side, in the boot, behind the liner, but couldn't see anything for the life of me.