aka...science room
loudspeakers
No matter how much money you spend on your stereo system even the best quality recording will sound terrible if it is hooked up to poor quality speakers.
CDs store sound as a series of zeros and ones which the CD player interprets as a changing electrical signal. Loudspeakers turn these electrical signals into the sound waves that we can hear so it’s important that they do their job well.
Whether you’re talking about woofers or tweeters, loudspeakers all work on the same basic principle.
A lightweight but rigid cone is fixed to a coil of wire which is connected to the signal produced by the CD. The coil surrounds a permanent magnet but is free to move in and out.
As the changing electrical signal moves through the coil, a changing magnetic field is produced around it.
This changing magnetic field interacts with the magnetic field of the permanent magnet and the two fields attract and repel each other as the electrical signal changes.
Since the coil is free to move, it moves in and out in step with the signal and makes the cone vibrate. In turn, the cone makes the surrounding air vibrate producing sound waves of the same frequency as the original recording.
All this means that you get to hear Britney just as she intended.
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