Introduction: Passive Amplifier
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
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