Fit simulator
Pick a case. The site works out the usable baffle and the depth budget, then narrows the drivers, the amps and the packs. Every score shows its arithmetic.
Depth reserved inside the case for the amp, pack, wiring and bracing. Drop it to 1 for a thin plate build, raise it to 3 for a big 2.1 board.
A passive radiator is a tuning device, not a second speaker. It goes on the opposite face to balance the box and extend low frequency without a port you have to seal.
Boards outside your pack's voltage window will score zero on voltage, with the reason shown.
Nominal voltage is what the amp sees most of the time; peak voltage is what it sees hot off the charger. Both are checked.
Choose a case and the shortlist appears here.
Pick a case and a driver to start.
Your selection is written into the URL, so you can send a build to someone else.