Search for Science Fair Projects

1000 Science Fair Projects with Complete Instructions

General Physics Science Fair Project

Speaker Size and Frequency Response

Speaker Size and Frequency Response | Science Fair Projects | STEM Projects
Have you ever wondered how the size of a speaker affects its frequency response? In this science project, you will build three different speaker enclosures of different sizes and measure the decibel reading of various audio frequencies.


The hypothesis is that reducing the size of the speaker enclosure will cause the dB of some frequencies to be higher compared to the rest of the frequencies.

Method & Materials

You will construct three speaker enclosures of different sizes using plywood, glue, nails, and silicon filler. You will then connect the speakers to a CD player and measure the decibel reading of various audio frequencies using a decibel meter.
You will need plywood, glue, nails, silicon filler, three 8-inch speakers, an electric drill and drill bits, a saw, a decibel meter, a CD player, and a test CD with various audio frequencies.


The results showed that the frequency response of the two larger speakers did not go beyond the 0 dB level, but the smallest speaker produced some frequencies that were louder than the others. These frequencies showed a response reading higher than 0dB.

Why do this project?

This science project is interesting because it demonstrates how the size of a speaker affects its frequency response.

Also Consider

Experiment variations could include testing different types and thicknesses of wood for the enclosure, or testing different sizes of speakers.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related videos

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Share this Science Project:

Related Science Fair Project Ideas

Exploring Color and Wavelengths in Space
Did you know that space isn't just black and white? Join us on a colorful journey through the cosmos and discover what the colors can tell us about the universe!
Seeing What Insects See
Discover what flowers look like to a bee by using a black light and a camera!
Exploring Color and Water Depth
Dive into this science project to explore how the color of objects changes as they are submerged deeper into the water.
Share this Science Project: