On Sun, 21 Jun 2009 05:52:48 -0700 (PDT), NT wrote:

I think bell wire would be better. 0.5mm^2 bell wire has a Vdrop of
88mV/m/A. At 8w rms (8v 1A) thats 1% of the speaker voltage,

TMH says cable length is 10m so you have 10 * 88mV loss for your
notional 1A current or 10%. And it's not as simple as power transfer
you have a mass attached to a coil moving in a magnetic field. If the
impedance of the source is high the mass will tend to keep moving
when the signal is removed rather than be damped. This probably isn't
an problem in this low power, Lo-Fi, application but reducing the
resistance (ie fitting more copper) made a noticeable difference to
my Hi-Fi, much more controlled bass.

1.5mm twin core mains flex has enough copper and is nicely flexable
for installation and is fairly robust.

--
Cheers
Dave.