Speaker Box Lite is a subwoofer box calculator and 3D design tool for DIY audio and car audio. Design your whole speaker system — from box calculation and tuning to multi-driver setups, crossovers, and ready-to-cut panels.

Enter Thiele-Small parameters (FS, VAS, QTS) and get the optimal box volume instantly.

Subwoofer box & bass
Pick the enclosure type for your target sound:

• Sealed (closed)
• Ported / bass-reflex (round or slot port)
• Bandpass (4th & 6th order)
• Passive radiator
• Transmission line (TL) / quarter-wave for deep, smooth bass

Subwoofer database
Search 5,000+ subwoofers and drivers from 300+ car audio brands — Thiele-Small parameters load with one tap. Add your own drivers to the shared online database.

3D design
See your box in full 3D. Place speakers and ports, choose materials, and design the box to fit your car trunk.

Tweeter waveguides
Design tweeter waveguides to shape dispersion and help integration with the midrange. Change the geometry (conical, elliptical, hyperbolic, radial) and check the concept before you build it.

Multi-way systems
Build 2-way / 3-way / multi-range systems with several drivers. Compare options, match levels, and put together a system that blends properly.

Crossover
Design and tune crossovers for a cleaner result:

• High-pass / low-pass / band-pass
• Series & parallel notch, Zobel, RC & RL networks, L-Pad
• Set crossover frequency and tonal balance

Simulate before you build
Compare designs with clear frequency response, phase, cone excursion and SPL charts — in-car and free-air. Cut the trial-and-error and reach your target sound faster.

Cut sheets & export
Get automatic cut sheets and blueprints for every panel. 3D-print ports and waveguides via STL, export the box or its parts as STL, or send parts to CNC in STEP format.

Your projects everywhere
Create a free account to save projects in the cloud and access them on any device. Start on your phone, continue on the web at speakerboxlite.com.

Note: some advanced features are available in PRO — unlimited projects, offline database access, and export.