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The
basic structure of the speaker and the receiver is almost the same; the
diaphragm generates the sound by the reaction upon the sound coil and
magnet.
The main diversities
are as below:
The different usage
Depend on the size of the speaker; the distance between the speaker
and the user’s ears is normally from several dozens of centimeters to
several meters. However we always nestle up a receiver against our ears.
The different material of the
diaphragm and the sound coil
In order to bear the higher power, the diaphragm of the speaker is usually
thicker than the receiver, the thinnest one is 18u. The larger of the
dimension and the power is the heavier the diaphragm will be.
The receiver takes the lower power, but requests for better low frequency
curve; therefore we usually use the diaphragm with the thickness from
6u-12u.
Besides the diaphragm, the receiver often works with a piece of paper
or cloth to adjust the frequency response, which can help to meet all
kinds of standards or to match up the resonant box of the mechanism.
The different electronic characteristic
We often see the speaker with impedance of 4-8ohm, the too high impedance
leads to the higher power to drive the speaker, normally is from 0.2W
to several dozens of watt.
Depend on the circuit design, the impedance of the receiver is from
16, 32 to 150ohm. The general power is only from 0.01W to 0.1W.
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& B Components (Taiwan) - Your Acoustic Solution!
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