Free DIY Speaker Design Software
The complete, web-based toolkit for audio enthusiasts and woodworkers. Simulate subwoofer response, design acoustic enclosures, and generate optimized plywood cut sheets directly in your browser.
No downloads. No account required. 100% Free.
Everything you need to build the perfect audio system
Four powerful tools engineered to work together seamlessly.
T/S Parameters
Input your speaker's Thiele-Small specs (Fs, Qts, Vas) or save drivers to your personal database.
Explore Database →
Box Simulator
The ultimate web-based WinISD alternative. Model frequency response, port tuning, and cone excursion.
Run Simulation →
Box Calculator
Calculate internal air volume, compensate for driver displacement, and view 3D assembly models.
Design Enclosure →
Cutlist Optimizer
Stop wasting wood. Generate highly efficient plywood and MDF cutting diagrams for the shop floor.
Optimize Cut Plan →A fully integrated DIY audio workflow
Why use four different desktop programs when you can do it all in one place? Our tools communicate with each other to save you time and prevent math errors.
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Step 1: Enter your specs in the T/S Wizard.
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Step 2: Instantly simulate the frequency response to find your target volume.
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Step 3: Design the physical 3D box based on that exact internal volume.
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Step 4: Send the panels to the Cutlist Optimizer and hit the table saw!
Built for Modern Browsers
Ditch the virtual machines. Our suite runs natively on macOS, Windows, iOS, and Android.