Kevin McMurtrie wrote:

Don't confuse current and voltage. If one end is -10V and the other is
+10V, then a conductive path between them will have 0V at one point.
Voltage is relative, of course.

A voltage is a difference of potential between 2 points. If one point
is +10v and the other is -10v, the difference is obviously 20 volts.

10 - (-10) = 20

And since you have doubled the voltage, you will double the current in
the load as well, giving us (theorically) 4 time as much power than a
single channel.

The impedance of the load have not changed.
--
Eric (Dero) Desrochers

Hiroshima 45, Tchernobyl 86, Windows 95