give'em 4...500 hours of break-in or whatever. if they don't sound good out of the box it will not improve. break-in only helps to ones sounding good to sound softer with less of edginess that is usually present in the speaker. tonal balance issue implies to poor crossover design.
for cheap speakers in general is the best to go active. M-Audio audiophile active bookshelves have the tonal balance adjustable the way you like.
for cheap speakers in general is the best to go active. M-Audio audiophile active bookshelves have the tonal balance adjustable the way you like.