You breathe it, feel it and it seems so much more omnipresent than when you can look at a speakerbox and intuitively know the sound is coming from that spot.
The free-floating tweeter is outside the speakerbox, meaning sound radiates in all directions to give a deeper, wider sound impression, similar to the tones you would hear during a live performance or in a recording studio.
The Lib Dems have asked the House of Commons Speaker whether Mr Clegg can oppose the prime minister at the despatch box for his statement on the report.