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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