Getting the design of the diaphram just right can seriously improve the speaker's linearity and frequency performance.
Designing diaphragms has during the years been based on “cut & try” engineering. This method is very time- and cost ineffective and even if huge resources are invested, there is no guarantee that the optimal design and performance has been reached. At Ole Wolff we have a faster and more reliable way of designing and optimizing diaphragms.
COMSOL Multiphysics® allow us to design diaphragms for various sizes of transducers where parameters such as foil type (single or multi layers), thicknesses of the foils, geometry of suspension, piston area and shape, number of stabilizing grooves in the diaphragm surface etc. can be simulated and performance verified before any mechanical tooling process is entered. This combined with years of experience assures shortest lead time and closest match to performance targets.
COMSOL Multiphysics® is used to optimize linearity of the compliance and break-up modes. Image shows motion analysis performed on a diaphragm for a 50mm receiver.