Introduction: Passive Amplifier

By www.facebook.com/app_scoped_user
About: (love to share) some projects simply translate or modification of an existing project

prepare a4 paper or other usable size (used or new)

Step 1: Prepare the Paper

prepare a4 paper in the corner of the table

prepare hp or smartphone

Step 2: Paper Overlap

paper overlap with hp or smartphone

play the music

Step 3: Create a Cone

pull the edge of the paper and tuck it under the hp so that the paper becomes a piece

Step 4: Finished ...

enjoy the sound