We've used a really high quality audio driver and have some future products that'll help round out the system (aka subwoofers).

For reference here is the data sheet of speaker we use: http://www.baysidenet.tv/catalog/pdf/Peerless/30n18al04-04.p...

We also have a half a dozen other products designed to fit into this form factor, all of which provide a superior lighting experience to what is available on the market today.