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Question: Bad external speaker on htc Desire?

My Htc Desire has the worst external speaker I have had on ANY of my phones--even the inexpensive ones. Raspy and tinny and distorted is how my phone calls and music comes through the speakerphone. Is anyone else reporting this problem or do I have a lemon? Had an htc Hero and the audio from the external speaker rivaled my daughter's ipod. Thought the Desire's would be just as good. Should I take this back to my carrier and ask for a replacement or is this an issue that is common to all the Desires?