Speaker Box Filter Designer is a simple and useful software for calculate the first and second order passive audio filter for 2 way and 3 way speaker box .

Version 3 includes now coil calculator based on Harold Wheeler formula for multilayer air core inductance.

Version 2 includes calculator for first, second and third order (high pass and low pass) Bessel and Buterworth active filters type.

Speaker Box Filter Designer audio filter calculator is a very simple program that provide a simple calculations of values for all components used in passive audio filters for speakers .

Also with this audio filter calculator software you can calculate the numbers of turns required by coils used in audio filters .



