the brown wire is plain speaker cable.
your logic seems flawed. walmart has good plain copper wire... but radioshack's plain copper wire isn't good.
that makes no sense at all.
http://www.monstercable.com/productdisplay.asp?pin=1518
seems to be your basic copper wire. nothing fancy... just price is jacked up for monster's name.
nvm... won't waste my money there.