Search for Science Fair Projects

1000 Science Fair Projects with Complete Instructions

Electronics Science Fair Project

Speaker Size and Frequency Response

Speaker Size and Frequency Response | Science Fair Projects | STEM Projects
Ever wondered how the size of a speaker enclosure affects the sound it produces? In this project, you'll 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, and nails. 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, a drill, saw, decibel meter, 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. This type of air tight speaker enclosure is called a sealed enclosure and can produce more precise sound.

Why do this project?

This science project is interesting because it shows how the size of a speaker enclosure can affect the sound it produces.

Also Consider

Experiment variations could include checking the frequency response using different types and thickness of wood for the enclosure, or using 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

Faster Computer Performance
Does your computer take forever to start up? Find out how to make it faster with this science project!
Hardness of Tennis Balls and Distance Traveled
Does the hardness of a tennis ball affect how far it can travel? Let's find out!
Seeing Through the Fog: Estimating Distance with Fog Lights
Can fog lights help you see better and estimate distance more accurately? Find out in this fun science project!
Share this Science Project: