Dog Faced Pony Soldier
Your argument suggests that we could say all subwoofers are identical and unoriginal because they are all boxes with woofers and amps in them dedicated to bass performance. You could say that all cars are the same and unoriginal because they have four wheels, a steering wheel, accelerators and brakes. They also come with headlights and seats. Therefore, all cars are unoriginal, all subwoofers are unoriginal, all tower speakers are unoriginal, all cell phones are unoriginal. If the argument is that similar placement is the definition of unoriginality, then all box speaker types are unoriginal.