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Why some CDs sound way louder than others?

Some CDs sound much louder than others so that with a kind of low setting in the volumen knob of the amp the SPL coming out of the speakers gets pretty loud. OTOH with some CDs it is really necessary to crak the volumen up to get the SPL desired. Why is this? Can some one explain me this?
tiofelon
tom6897's avatar
tom6897
1,484 posts
 
Is there a Square somewhere where we can all meet to have a friendly protest that will get the attention of all the media companies.

I hope they do not intend on ruining Hi Res blu-ray audio or other HD resolutions.
reubent
7,054 posts
 
Does your player have HDCD decoding? If so, check one of your really loud CDs. If it has the HDCD logo on it, that my be the answer. I believe HDCD is recorded several db louder than a standard CD.

If not HDCD, then the previously posted answers are likely correct....
tiofelon OP
59 posts
 
Thank you all for your responses! Very clarifiying opinions. I do have a SACD player and you are right Reubent some sound really loud compared with the regular Redbook CDs. Thanks again!
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