The monitor audio bronze fx is surround speakers with switchable dispersion which allows them to be optimised for different surround sound layouts the fxs are compact wall mounting speakers which can be switched between direct and ambient sound modes they feature a 140mm bassmid range driver and two 25mm tweeters which utilise cones made of c cam ceramic coated aluminiummagnesium a material originally developed for jet engine components the sound is detailed and clean as the cones charac