+1 to the comment by @yyzsantabarbara . The manufacturer is the best one to help you.
In theory, shorter speaker cables are best, because the impedance of the cables influences the sound least. Whether that's audible -- or desirable -- to a given listener in a given system is a different, and entirely subjective, question.
In theory, shorter speaker cables are best, because the impedance of the cables influences the sound least. Whether that's audible -- or desirable -- to a given listener in a given system is a different, and entirely subjective, question.