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<blockquote data-quote="gstokes" data-source="post: 8298726" data-attributes="member: 660947">It never hurts the amplifier to present it with more impedance than it&#039;s rated for, only when we present the amplifier with less impedance than it&#039;s rated for do we run the risk of damaging the amplifier.I will attempt to explain why: We know that voltage and current are inversely proportional IF the resistance is constant, we also know that current and resistance are inversely proportional IF the voltage is constant so if the voltage is remaining the same but the resistance in the speaker circuit aka (load impedance) is dropping then the current must be rising, with increased current comes increased heat and the amplifier will only get so hot before it goes into thermal overload and shuts down.That&#039;s why some amplifiers are only rated &quot;stable&quot; to 2 ohms while others are rated stable to 1 ohm, excessive current aka heat is what causes the instability.</blockquote>

[QUOTE="gstokes, post: 8298726, member: 660947"] It never hurts the amplifier to present it with more impedance than it's rated for, only when we present the amplifier with less impedance than it's rated for do we run the risk of damaging the amplifier. I will attempt to explain why: We know that voltage and current are inversely proportional IF the resistance is constant, we also know that current and resistance are inversely proportional IF the voltage is constant so if the voltage is remaining the same but the resistance in the speaker circuit aka (load impedance) is dropping then the current must be rising, with increased current comes increased heat and the amplifier will only get so hot before it goes into thermal overload and shuts down. That's why some amplifiers are only rated "stable" to 2 ohms while others are rated stable to 1 ohm, excessive current aka heat is what causes the instability. [/QUOTE]

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