How about this? Think of your speaker as a Schwinn 10-speed. A 4 ohm speaker is like riding with lower gears- easier effort, but lower speed; an 8 ohm speaker is akin to using taller gears, more effort but higher speed. Thus lower impedance speakers need amps that can pedal _fast_, i.e., high current designs while high impedance speakers that can pedal _hard_ - high voltage amps. Now think of the interconnects as ...
