Originally Posted By: jwright350
I've always wondered if the amplifier really knows what resistance the speakers are... From my limited education in circuits, I've just aways assumed that power (watts) is power...be it at a 4 ohm resistance or 8 ohm eventually your amp is going to run out it. But the end result would still have the same volume (dB). wrong?


When amps are rated, they are rated assuming a certain load (usually 8 ohms). As such, the amp can deliver x amount of amps when that resistance load is connected. Lowering the resistance means the amp must deliver more current to equal the same power output.


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