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Suppose I have a 3w amplifier and two 1w maximum rated speakers, what would happen If I play some music?

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    \$\begingroup\$ Most probably you would enjoy. Although for really good music you need a 2000W amplifier. \$\endgroup\$
    – user76844
    Commented Oct 7, 2017 at 19:00
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    \$\begingroup\$ That depends how far up you turn the volume and how much heavy metal you listen to. \$\endgroup\$
    – Trevor_G
    Commented Oct 7, 2017 at 19:01

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As long as you don't crank the volume past what the speakers can handle, there will be no problems. If you try to drive the speakers too hard, they will start distorting. If you hear distortion, turn the volume down.

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  • \$\begingroup\$ Whoever downvoted this, what exactly do you think is wrong? \$\endgroup\$ Commented Nov 6, 2017 at 15:01
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It’s a good practice to use an amplifier at least twice the power of the speaker. This is due to the fact that amplifier manufacturers rate their system max power when the output is already in a high distortion. Therefore if you used it with a speaker with similar power you won’t appreciate the full power of the speaker without distortion. Your system should be able to provide a 1W with good quality, depending on your amp quality. However you must assure you can limit the output in 1W. If you use the full amp power you can actually damage your speaker.

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Speaker power rating is mostly due to voice coil heating, so it is an average power over a few seconds.

Amplifier power rating is the max (peak) power.

Music has at least a 10:1 peak to average ratio, it is less for speech but if no clipping occurs you'll still have a large safety margin.

Note: if it sounds like someone's brushing their teeth while singing, it's clipping.

TL/DR: it'll work fine unless you listen to constant power sine waves.

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    \$\begingroup\$ "Music has at least a 10:0 peak to average ratio". Is that a typo? \$\endgroup\$ Commented Oct 7, 2017 at 19:32