Step 1: Parts Needed
3 or 4 different songs by different artists
Several different Test Materials (I used an index card, a CD, an empty Nalgene bottle, a piece of an egg carton, a piece of a composite material, and a small piece of wood.)
A software program that controls your speakers along with the bass and treble levels.
Step 2: Bass Levels
The higher bass level allows for the bass speaker to pulse and put out more of a beat than the other speakers. This is necessary for this experiment.
Step 3: Songs
To start off, I used "Starlight" by Muse, "Just Stop" by Disturbed, and "Warm Tape" by Red Hot Chili Peppers. "Just Stop" has a very audible guitar and drum rhythm, while "Starlight" has an audible piano and drum medley. "Warm Tape" is the outsider in this case, as it contains a synthesizer along with the normal instruments of drum, bass, vocals, and guitar.
I recommend using two or three different songs in one set like I did. I made sure to use songs by different bands in different categories so that I could get an idea of the bass levels.
Step 4: Set Up
Place the test materials away from the speaker until you are ready to place them on and play a song. By doing so, you avoid putting excess weight on the speaker. This allows you to see what materials move when you do place them onto the speaker.
Step 5: Testing the Machine
1. Start the first song and place one material onto the speaker. If there is any movement, record what kind of material and what movement you see. Sadly, I only saw movement with my index card for all three songs. The movement you are looking for is qualitative, meaning that you should record what materials move and in what way they move.
2. After you record the movement, replace the test material with another. Record any movement from the second material.
3. Repeat step 2 for every test material until you have finished with the recording.
4. Repeat steps 1-3 for every song until you are finished with the last song and last test material.
5. Make sure that you have recorded your results in some way. This will allow you to go back and show results in graph or picture form.
Step 6: Share Out
I must thank Kipkay for allowing me to use his Instructable to create a speaker for this project for me to test and, of course, the readers.
This Instructable is meant for both educational and recreational purposes, but please do not go out, build a massive bass speaker, and use it on someone's house. That is not the intention of what I set out to do.