We live in a world of small devices with speakers inside and we need to run the speakers as loud as possible without distortion or fear of destruction. Speaker Protection is the name of the algorithms used to predict how closely to the physical limits of the speaker you are without doing either of these. Most speaker protection algorithms use complex calibration techniques at production time, then use voltage and current measurements to estimate whether they’re close to the physical limit of the speaker. But an estimate is exactly that. An estimate. subVo’s ASP can give the actual position of the diaphragm in real time.


ASP consists of a Bend Sensor® mounted between the diaphragm of the loudspeaker and the frame or basket. The Bend Sensor tracks the diaphragms’ position in real time across the entire audio spectrum.


With ASP technology, companies can eliminate the costly calibration steps off the production line during manufacturing.