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Frequency response from speakers of different sizesFeatured science projectScience project video

Observation

The results show that the frequency response of  speakers A and B  does not go beyond the 0 dB level, but the smallest speaker C will produce some frequencies that are louder than the others. Thesefrequencies  show a  response reading higher than 0dB.

Speaker

dB reading taken at decibel meter

30Hz

50Hz

80Hz

150Hz

300Hz

600Hz

Speaker A

-14

-7

-3

0

0

0

Speaker B

-22

-9

-1

0

0

0

Speaker C

-30

-12

1

6

3

1

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Complexity level:
9
Project cost ($):
180
Time required:
2 days to prepare, 1 day for experiment
Material availability:
Easily found
Safety concerns:

Basic safety requirements