About The B&W 707 S3 Speakers707 S3 excels on the FS-700 S3 stand, but it’s also a superlative book-shelf loudspeaker. Its compact, space friendly design makes it easy to accommodate in smaller spaces, but thanks to its Carbon Dome tweeter, Continuum cone mid-bass and curved baffle, this outstanding loudspeaker provides proof positive than often, size can be deceptive.