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.
