Why is the power of a loudspeaker expressed in watts?

Question

Why is the power of a loudspeaker expressed in watts?

Answer 1

The wattage rating of a speaker is a measurement of the electrical power it can tolerate through its voice coil without damage.  Speakers are very inefficient devices; most of the power applied to them is converted to heat.  If the speaker's voice coil gets too hot, it will burn out.

It's not expressing the power of the loudspeaker; it's meant to be the maximum power output of the amplifier you're connecting it to.  Amplifier power output is measured in watts.

Answer 2

Unlike sounds generated by human beings, and animals and materials, the sound output of a speaker is derived from an electrical signal. This electrical signal, like in other electrical appliances, represents the energy used or work done by a current flowing through it. This power, as we know,depends on the voltage, current and phase difference between the current and voltage, and is measured in watts. One watt is the energy or work done at one Joule per second. This scale makes measuriing of power output easy for commercial purposes.

Answer 3

more watts equally more power but really that doesn't mean allot because some companies say they have a 1000watt! peak but are only producing 200watts RMS so your not getting your full power. RMS is the nominal amount of power that is run at a constant rate. you can mess up your speakers if your amps RMS do not match your speakers RMS. so mostly when your searching speakers keep your eye out for how many RMS the speaker is producing thats where you get your most power.