What is the maximum SPL that it will take?
We aren’t sure. The test equipment required to actually produce and measure distortion at over 146 db isn’t available to us right now. We have to build a properly loud calibrated source, and that will take some time. We can withstand actual percussive sounds like those produced by a kick drum, easily, and the waveforms we see do not appear to be distorted. We have been thinking about building a pistonphone but these devices are not very useful above a few hundred cycles, at best. There is evidence that the material behaves linearly up to very high levels – probably well past 146 dB at any frequency. That is very high indeed.
