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Junior Varsity
Will Underpowering Speakers Cause Damage?
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<blockquote data-quote="Tim McCulloch" data-source="post: 208144" data-attributes="member: 67"><p>A clipped waveform (square wave) has more power than a sine wave of the same amplitude and is why smaller amps got a reputation for being detrimental to speakers.</p><p></p><p>"Why did my 100w. amplifier blow the 200 watt speakers?"</p><p></p><p>Because all speakers have a limited amount of time before the voice coils can no longer dissipate the heat... and most operators who clip amplifiers continuously have no clue that the square waves have more more nor how long the loudspeaker will dissipate it's rated power.</p><p></p><p>So it's not just that an amp is clipping, it's how "hard" the clipping is and for how long.</p><p></p><p>Compression drivers/tweeters have very small voice coil wire and not much thermal capacity so they will die first, usually.</p><p></p><p>Jack, keep this in mind: loudspeaker transducers die for one or both of 2 reasons (there are no other operational reasons) - physical damage to the cone, voice coil "spider" or cone suspension due to over-excursion; and heat due to overpowering.</p></blockquote><p></p>
[QUOTE="Tim McCulloch, post: 208144, member: 67"] A clipped waveform (square wave) has more power than a sine wave of the same amplitude and is why smaller amps got a reputation for being detrimental to speakers. "Why did my 100w. amplifier blow the 200 watt speakers?" Because all speakers have a limited amount of time before the voice coils can no longer dissipate the heat... and most operators who clip amplifiers continuously have no clue that the square waves have more more nor how long the loudspeaker will dissipate it's rated power. So it's not just that an amp is clipping, it's how "hard" the clipping is and for how long. Compression drivers/tweeters have very small voice coil wire and not much thermal capacity so they will die first, usually. Jack, keep this in mind: loudspeaker transducers die for one or both of 2 reasons (there are no other operational reasons) - physical damage to the cone, voice coil "spider" or cone suspension due to over-excursion; and heat due to overpowering. [/QUOTE]
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Will Underpowering Speakers Cause Damage?
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