voltage runs on thin cords.
amperage runs on thick cords.
dont believe me and have a look at the circuit traces for reference.
size is supposed to be a matter of heat before the wire melts and the windings unwind.
to say a thicker cable can transfer very small voltages is magical.
i am not the dyslexic person here.
thick wires trim the treble.
thin wires trim the bass.
exactly how i cannot say because i dont make my own wire.
but
i do know the small voltages can get confused on their way to the end of the wire.
things like accumulation or simply running into too much resistance are 'statement reasons'
the more magic the cable industry puts into the speaker wire.. the thicker and thicker the wire has to be before the treble starts to get trimmed.
but
things like oscillation can occur within the wire because of the metal's properties.
before a full oscillation occurs.. the soundwave is changed, and that is known as distortion.
when the full oscillation doesnt occur, you would basically be sending a DC signal to the speaker .. or simply adding DC to the output.
it sounds flat and dull, lacking volume.. yet heating up the voice coil just the same until you turn up the amplifier to try and raise the output level of the speaker and the voice coil blows.