Quote:
Originally Posted by dialog_gvf
. . . Lower impedance speakers means it will take more current to drive the speakers. And current leads to heat. . .
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This is not completely accurate but impedance should be considered for sure.
Lower impedance means the the amp will draw more current more easily, but it will also make more output. A lower impedance speaker won't inherently cause the amp to draw more current for the same sound output level.
Most simply put, the system would sound louder at lower volume settings.
Think of it as a water supply with a lower impedance equating to a larger pipe. The larger pipe does create more demand on the supply, but it also delivers more water!
The concern is that if you are not aware, it's easier to drive the amp harder thus create heat and/or overdrive the speakers.