Simple question, or is it...


What exactly is an audio signal made of, and what exactly is the medium it travels through in a cable??
thecarpathian
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A "big load" is one which draws, and therefore dissipates, a lot of power.

On any given AC circuit, more load = more current = lower resistance/impedance.

Think of a hair dryer.  1500 Watts is a big load, and caused by a low resistance
An amp which has no load = an amp with no speaker connected to it.

A test load is a resistor or complex circuit put on the output of an electrical device to measure it's' performance under standard operating situations.

See the Stereophile simulated speaker load.

Having a load on the outputs is the opposite of having nothing connected.

A very difficult load is one with low impedance and/or high current / voltage phase angles.