This is a project I've wanted to do for many years. Most of the information pertinent to the project is in the videos, but I wanted to make a little outline of how I made the speakers. If you have any questions, please comment or message me, and I will be happy to answer.
Things you'll need:
Step 1: Plan Out Your Speakers
Start by drawing a plan of your speakers on paper. They can be as ornate of simple as you like.
Step 2: Mark Out and Saw
Transfer your plan to the plywood and then carefully saw out the pieces.
Step 3: Drill and Widen
After you've prepared your pieces, begin drilling and widening holes in the plywood for the speakers, volume knob, power button and wires.
Step 4: Gluing
After you've drilled and widened the holes, you can start gluing. Remember to keep the back of the speaker case off until you've assembled the speakers.
Step 5: Assembling
Position the speakers themselves over the drilled holes and attach them with bolts. Run the wires through the openings and afterwards glue on the back of the case.