Build Your Own Subwoofer or 2-Way Full Range Cabinet!
DS18 PRO-CUBE10 Midrange Horn Diffuser Box, Designed on a 12x12x12 5/8" MDF Wood Enclosure with Black Carpet Finish and Build-in PRO-EXL-108 10-Inch Midrange Speaker and a PRO-SDF10 Speaker Diffuser : Amazon.in: Electronics
The Art of Do It Yourself Speaker Design | The World of Wogg