# Simulation of Planar Magnetic membranes; tweeter and midrange **URL:** \ **Category:** General Questions\ **Created:** [May 16, 2026, 10:17am UTC](https://prepomax.discourse.group/t/simulation-of-planar-magnetic-membranes-tweeter-and-midrange/3475 "2026-05-16T10:17:08Z")\ **Posts on this page:** 1\ **Showing post:** 69
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [June 2, 2026, 8:14am UTC](https://prepomax.discourse.group/t/simulation-of-planar-magnetic-membranes-tweeter-and-midrange/3475/69 "2026-06-02T08:14:15Z")
Make sure that you are using the Pardiso matrix solver (default in PrePoMax, but it’s important to ensure this). CalculiX may not be able to hanle such large numbers of modes, but you could perform a separate run with higher lower bound to start from e.g. half of that range. Also, to make sure PrePoMax won’t interrupt such a large run, try submitting it from the command line as described here: [Using standalone CalculiX](https://prepomax.discourse.group/t/using-standalone-calculix/846) Unfortunately, there’s no way to limit the modes to the ones with a specific response apart from modifying the supports (which would of course also shift the frequencies). --- _[View the full topic](https://prepomax.discourse.group/t/simulation-of-planar-magnetic-membranes-tweeter-and-midrange/3475)._