Introduction: Double Speakers on Wood
This Instructable shows you what happens when you put a pair of speakers on a piece of wood.
You can try it yourself and see the changes in sound output. The video shows that the change in sound is not noticeable. However, putting speakers on wood protects the speaker diaphragm (speaker cone). You can then put this device in a laptop bag, cardboard or box. Then you will definitely notice a change in sound.
Parts: At least two speakers or big earphones, washers, screws or nuts with bots, a block of wood, insulated wires, audio cable with earphone plug (do not use Line In cables).
Optional parts: solder.
Optional tools: electric drill, manual drill, wires stripper (you can use scissors), soldering iron.
Step 1: Make the Base
I made the entire base with just three thin wooden blocks that you see in the photo. I had to use high pressure to force the screws that you see in the photo inside the wooden blocks. I used bigger (large diameter) screws to widen the holes and that made it was easier for smaller screws (thinner diameter screws) to penetrate inside the wood. However, using bigger screws increases the risk of cracking the wooden block. To solve those problems I could have used a manual or electric drill and drilled a thin hole in the wooden block. However, I could not be bothered with an electric drill because I had to look for the right drill size.
Step 2: Attach the Speakers to Base and Audio Cable to Speakers
You can see that I used big washers because the speaker rubber holes were very wide.
I did not tie any knots around the speaker screws. However, the audio cable connection is tight.
I also used a soldering iron to reduce the effect of aging on contacts due to rust.
The white wire is the left channel, the red wire is the right channel and yellow cable is ground. Those are universal standards:
The 10 W rating on the speaker could be either maximum/average (electrical input)/(acoustic output) power that the speaker is designed for. Each country has its own production standards and some factories in poor countries do not follow all standards.
Step 3: Testing
I attached the speakers to my mobile phone.
Warning: Keep in mind that there is a danger of you burning your mobile phone earphone output. You need to check that there are no short circuits in your speaker connection and some audio outputs (eg. Line Out) cannot handle big speakers (low impedance loads) without burning, because some speakers have very low impedance (resistance) and thus drain high currents from the audio output. Thus it is better if you connect your speakers to Hi-Fi speaker output.
You can see my device working in the video.