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<blockquote data-quote="quackhead" data-source="post: 7792399" data-attributes="member: 573547">As the resistance (ohm load) rises, the amp is producing more voltage, but less amperage, thus requiring less amperage. The output is restricted by the resistor(speaker), the amp is more stable and produces less heat. Amps are rated by power output, Dampening factor, THD, Signal to noise ratio, etc. These factors indicate not only how much, but more importantly, how well the amplifier handles the signal being amplified. These ratings are 99.9% of the time taken while using the highest ohm rating of the amplifier.As the resistance to the amp decreases, the amplifier works harder to provide more amperage, causing the amplifier to destabilize and produce more heat. When this happens, the amp looses dampening ability(sub cone control), produces more noise and distorts the signal passing through.This is why most amps are not even measured for distortion and dampening below 2 ohms...some amps are made more tolerable than others and can perform better at a lower impedance than others. this is why some 1000 watt amps cost $800 and some cost $150.</blockquote>

[QUOTE="quackhead, post: 7792399, member: 573547"] As the resistance (ohm load) rises, the amp is producing more voltage, but less amperage, thus requiring less amperage. The output is restricted by the resistor(speaker), the amp is more stable and produces less heat. Amps are rated by power output, Dampening factor, THD, Signal to noise ratio, etc. These factors indicate not only how much, but more importantly, how well the amplifier handles the signal being amplified. These ratings are 99.9% of the time taken while using the highest ohm rating of the amplifier. As the resistance to the amp decreases, the amplifier works harder to provide more amperage, causing the amplifier to destabilize and produce more heat. When this happens, the amp looses dampening ability(sub cone control), produces more noise and distorts the signal passing through.This is why most amps are not even measured for distortion and dampening below 2 ohms...some amps are made more tolerable than others and can perform better at a lower impedance than others. this is why some 1000 watt amps cost $800 and some cost $150. [/QUOTE]

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