Passive Crossover Designer  -  Design passive crossovers and equalization networks
Jeff Bagby's Loudspeaker Design Software
click on a progam name to view the full description and download the application
Woofer Box and Circuit Designer  -  Design subwoofers and active circuits (e.g. Linkwitz Transform)
Frequency Response Modeler and Phase Extractor  -  Applications for manipulating FRD files in many ways
Baffle Diffraction and Boundary Simulator  -  Baffle-step (diffraction) and room gain modeling
These loudspeaker design tools are Microsoft Excel based programs. Versions are available for .xls (Excel 97-2003) and .xlsm (Excel 2007 & 2010). It is recommended that the Excel add-in: Analysis Toolpak be installed for full function of the programs. To read a detailed description of each program click on the name below. This will take you to the description and download page.Enjoy your speaker-building, and thanks for visiting.

Jeff
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Project Descriptions, Pics and an extensive page of links to DIY speaker building resources.