Forget about classical speaker with magnet, coil, diafragme! It is not possible to build an ideal speaker as long as there is a weight(diafragme, coil, suspension). Not new, just want to remember there are research in this field. You can expand your serch, I just begin new thread. Please check:
InAVate - Excited nanotubes mean wireless speakers
InAVate - Now nanotubes make music
InAVate - Invisible speakers brought a step closer: Architects rejoice!
InAVate - Paper thin speakers aimed at signage applications
InAVate - Flat speaker, fat sound
These are some of the possibility. That is the future. If you continue to dig in same old direction, never reach Nirvana.
InAVate - Excited nanotubes mean wireless speakers
InAVate - Now nanotubes make music
InAVate - Invisible speakers brought a step closer: Architects rejoice!
InAVate - Paper thin speakers aimed at signage applications
InAVate - Flat speaker, fat sound
These are some of the possibility. That is the future. If you continue to dig in same old direction, never reach Nirvana.