Step 1: Materials and Tools
1 USB micro jack
2 Potentiometers, not logarithmic, mine are logarithmic and there is a narrow range of control now
2 Mono Audio Amp Breakout Boards
1 3.5 mm jack
8 bolts and nuts of appropriate sizes
Tools(This is what I used, you could probably get away with less)
Helping hands are practically a necessity, but if you are dextrus enough you might slide by without them
Chisel and hammer, Theses come in really handy when I find out my laser cut design wast good enough, which is often.
Step 2: Design.
Anyway, I designed how I wanted the box to be using sketchup and then transferred the faces to an SVG file and put them on the Ponoko P2 laser cutting template.
Step 3: Prepare the Laser Cut Acrylic
Step 4: Soldering Most of It
Next I connected the positive voltage to the opposite end of switch.
I then connected the potentiometers to the appropriate holes on the mono amps, that is either edge pin to either edge hole, and the middle pin to the middle hole.
I connected the pins of the audio jack to the appropriated pins of the mono amps. That is the pin the pin with the hole is the negative wire, and the two pins that comes up and bends are positive (look at the pictures for help). Connect the different positive pins to different mono amps but connect the negative pin to both.
I fed the speaker wires through both of the holes, and then soldered them into the audio out pins.
Makes sure everything is connected and makes sense.
We are ready to test!
Step 5: Test 1
Step 6: Shrinkify
Step 7: Second Test
Step 8: Adjust and Glue
Then I cut some necessary slots for the USB, and drilled partway from the front into the audio jack hole, this is for the little provided bolt. Be sure to drill in far enough or else the jack wont go in all the way, but not to far, or else it is much harder to affix to the acrylic.
Now start gluing! only glue the USB, audio jack and on/off jack. I used JB weld for all the parts going into the hole, and then I used hot glue for putting the box together. When there is one side left, put glue on the joints and push them together. After the glue dries, use a hobby knife to clean it up. When both boxes are glued, put glue on the side of the smaller box with the hole and push it onto the bigger box so that the holes of the speaker wires line up.
Step 9: Make It Look Nice.
Now time for a cable holder. Make some holes at each corner, and a trapezoid piece from the top. Then cut some slits into the holes. look at the pictures to see how to use it.