The imposing DM604 S3 is the only full 3-way system in the range. The dedicated Kevlar® cone midrange driver is housed in its own isolated chamber within the cabinet and delivers all the nuances of the detail in the recording without the encumbrance of having to produce any bass. Twin 180mm (7-in) aluminium cone bass drivers combine with Flowport to deliver the deepest bass frequencies with ease. With the DM604 S3, you truly are getting everything that B&W is famous for in terms of signature sound and quality. This is a true 4-driver / 3-way system where both of the lower 7” aluminum woofers are active – there are no passive drivers. Like all the vented-box systems in the range, foam plugs are supplied to block the ports should the acoustic of the listening room impose too much bass reinforcement. Suited to larger rooms, the DM604 S3 is capable of reproducing everything from the delicate sounds of a solo performance to the complexities of a large ensemble. In combination with the LCR600 S3 center speaker, it forms the basis of a truly impressive home theatre installation. Listing is for 3 DM604 S3 front speakers and 1 LCR600 S3 center. Only one foam plug. All front covers are present, but do not stay on (they look amazing without in my opinion). Selling due to these being WAY too much speaker for me and no longer having a powerful enough receiver to push them. Very high end speakers!! $1400 for a pair new..bargain deal with one extra tower and center!!