Re: what size speakers? 98 ford contour se
Hi, don't now what speakers come with the Contour but I do know that Ford didn't always put in decent audio system in their vehicles compared to other companies, such as Honda.
That said, I agree, try Crutchfield for determining the size of the speakers, also, if from North America, try Best Buy or Circuit City and other similar audio sources online as many will have a system to determine what will fit in a particular vehicle, ie, speaker size.
My 1992 Ford Ranger supercab has the oval 5x8 or 6x9 inchers in the rear panels.
Systems with tiny amps will often do just what you had happen, playing at too loud a volume will cause the amp to clip, which will damage the speakers.
Curious, is the head unit stock or do you know? The other possibility, if not the stock head unit, then it may be pumping way too much power to the speakers, hence over driving them.
Good luck with finding this out.