With the increasing presence of audio smart amplifiers into daily-lives applications that go from mobile phone, virtual assistants and podcast to gaming and automotive environment, the demand of an improvement and optimization of audio quality has grown, contributing to a growing research of new technological innovations both in software and hardware. A central topic for smartPA is to maximize the power delivered to speakers by avoiding damages to it. For this reason, much effort has been made for the development of an efficient speaker protection algorithm able to avoid specific issues like the speaker-membrane excursion and the rising of its temperature above a certain threshold.