As seen on YouTube:
Dayton Audio ND25FA-4: https://www.parts-express.com/--275-059
Dayton Audio TCP115-4: https://www.parts-express.com/--295-415
Dayton Audio XO2W-3K: https://www.parts-express.com/--260-144
Screws: https://www.parts-express.com/--081-435
Epoxy the drivers firmly into their insets. Remember to seal all 4 mounting holes around each driver. (Blu-Tack works.) Space the crossover away from the mounting rails with Blu-Tack to prevent vibration. Run a thin / wide gasket of Blu-Tack around the rear access opening before screwing the backplate in to achieve a proper seal. Input below 40Hz is NOT recommended. (Exercise caution if no high-pass filter is available.) Recommended power: 40-80W per Dozer.
The author marked this model as their own original creation.