Intelligability Problem


Can anyone give me a heads up on what to check... I have a Denon receiver, Panasonic Blu-Ray player, and NHT towers, center channel, surrounds, and sub. TV sound is fine, but Blu Ray, and even reg. DVD is fuzzy, and unintelligible. Any suggestions??
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Thanks for the replies. I find that music and background sound is very good indeed. I am letting the BluRay player decode and am using the 5 analogue outputs to the Denon which is in ext. mode...meaning it is acting as 5 separate basic amps with a volume control. Speech coming from the center channel sounds totally muffled and sounds as though its from a 39cent speaker, although the NHT supposed to match the other speakers in sound quality. I am using HDMI directly from the Panasonic to the Sony hidef for video only, since my Denon has no provision for HDMI. I have adjusted the Panasonic to recognize that only video is HDMI. Any suggestions?
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