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Junior Varsity
How many watts is my sub getting
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<blockquote data-quote="Silas Pradetto" data-source="post: 24466" data-attributes="member: 34"><p>Re: How many watts is my sub getting</p><p></p><p>Amplifiers amplify voltage. This is the only part of P=IE that is constant regardless of load, or even with the lack of a load. The amplifier output voltage should be exactly following the input voltage waveform- the current waveform won't.</p><p></p><p>It is correct to think of the speaker as 'extracting' current, and therefore wattage, from an amplifier, based on the voltage-impedance relationship. </p><p></p><p>For most anyone that doesn't know the fundamentals of electricity, any and all theoretical discussion of what a speaker is doing when powered with an amplifier is going to be out of their realm of understanding, especially since watts are not directly related to SPL.</p></blockquote><p></p>
[QUOTE="Silas Pradetto, post: 24466, member: 34"] Re: How many watts is my sub getting Amplifiers amplify voltage. This is the only part of P=IE that is constant regardless of load, or even with the lack of a load. The amplifier output voltage should be exactly following the input voltage waveform- the current waveform won't. It is correct to think of the speaker as 'extracting' current, and therefore wattage, from an amplifier, based on the voltage-impedance relationship. For most anyone that doesn't know the fundamentals of electricity, any and all theoretical discussion of what a speaker is doing when powered with an amplifier is going to be out of their realm of understanding, especially since watts are not directly related to SPL. [/QUOTE]
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