Ann: Performance Specifications, page-74

Hi Happy Speculator,
I agree with your opinion about form factor. This is why piezo speakers became very popular many years ago for all sorts of buzzers, alarms and voice speakers in phone handsets, etc. as they are flat. They are super efficient at higher frequencies (consume very little power) just like the AP speaker. They were are also very popular in the microphone industry, and were a revolution. Same for MEMS microphones.

From what I can glean from available information, the AP speakers would be great right now, for similar applications that the piezo speaker is used for. So if they could make them cheaply enough, there is a big market for these things in like someone mentioned, a smoke detector or small alarm device, the speaker used for the earpiece in a mobile or home phone etc.

From your list:

smart phones
- tablets
- appliances and anything that has a digital readout that could use an accompanying sound or words/warnings
- laptops and desktops
- vehicle and other instrumentation
- vehicle speakers
- portable speakers
- home stereo
- highe end stereo
- cinema sound

I would only choose the 'appliances' and 'other instrumentation ' as being able to use the speakers in their current form. A caveat there, I am assuming the SPL charts they have published are max achieveable SPL. They don't state this, but I suspect they are, as this is the challenge they face I think to get the speakers to make enough noise at lower frequencies.

So maybe with more R&D they can make these work better at low frequencies, but in the current form, from my interpretation of the information, they are only good for the abovementioned at this time. I could easily be wrong, this is just my opinion and interpretation.