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.

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.

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

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

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