ITS A SPEAKER WHICH YOU CAN OPERATE IT ANYTIME WITHOUT ANY EXTERNAL POWER SOURCE.
ITS NAME IS QUITE SPEAKER AS YOU CAN ABLE TO LISTEN THE MUSIC IN SILENCE WITHOUT ANY LOUD SOUND, LIKE WHILE SLEEPING... OR STUDYING..
SO.... LETS BUILD IT....
Step 1: MATERIALS REQUIRED
2. A Small Casing
3. 3.5mm Audio Jack
(See the photos for details)
Step 2: STEPS
Put the Speaker inside the box with in which a round shape with the dimensions of the speaker has been cut out.
Screw the speaker with nuts and bolts. (As shown in the image)
Join the wires of the speakers and audio jack. (As shown in the image)
Now, close the box...
And your Quite Speaker is ready...