I would check you speakers to make sure something isn't wrong. Should be fairly uniform as far a freq response between the left and right.

A quick way to check this out would be to switch the leads from your CD player to your amplifier. If the same things happens with deep bass and highs on the left then I think you may have a blown midrange speaker on your left speaker. As Micheal says most mastering aims at having a good frequency balance between channels.

There may also be other problems in your room setup or in your monitoring setup so another way to put on a pair of headphones and listen to see if you are getting the same results in the headphones.

Hope this helps.

I know I don't have the best monitor system but I'm convinced they're better than most home stereos and functioning properly. So can anyone tell me why the recording of the Eagles Hotel California Live sounds so different on each side? Is it 3D sound trickery, panning, or just owning a really good everything. Why is it sooo wide sounding and so flat and perfect? How do you do that? how do you even get started doing that? What kind of equipment do the people who master for the supergroups use? and again, how could you simulate that kind of approach for under a million dollars? or do you think it has more to do with the mix being done on a very expensive equipment by good engineer?

Well it is wide and spacious and one of my favorite. I even bought the 5.1 remix. The trick is great players, writers, arrangers, engineers, and equipment. And I would say in that order. in mixes like these, arrangements and instrumentation are the key. Engineering is very good and the equipment was the standard of it's day. Good equipment is necessary but the people behind it are what makes it what it is. No tricks or gimmicks, just very skilled people.