I have been researching wireless Bluetooth speakers for my iPhone to listen to, among other things, audio books. I've read that those speakers tend to go quiet when there's a pause in speech thereby losing part the narration when they start up again. For streamed music however, they seem to work fine. I've also been informed that this happens due to the designers' desire to extend battery life by shutting down when there's no signal. Can anyone confirm this for me? And can anyone recommend ones that don't have this issue? Preferably not $100+ speakers.