The woofer is an A-PMD (Advanced Polymer-injected Mica Diaphragm) unit created by downsizing and performing specialised tuning of a woofer used in Yamaha’s high-end speakers of “Soavo” line. It is a high specification speaker using the white cone, the symbol of Yamaha high sound quality. Speaker cabinets vibrate, degrading sound quality. To overcome this, Yamaha drew upon its musical instrument manufacturing expertise to develop an internal structure called VCCS (Vibration Control Cabinet Structure), which uses strategically placed pieces of a composite material that provides excellent vibration isolation performance. The speakers have a beautiful, high quality finish that looks elegant in any setting. The speaker grilles are also designed for good looks, but can be removed for a more basic appearance.