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How does the size of a speaker affect its frequency responseFeatured 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. These frequencies 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

 

The graph below represents the results of our science project experiment.
frequency response science fair project

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Complexity level:
7
Project cost ($):
90
Time required:
2 days to prepare, 1 day for experiment
Material availability:
Easily found. May be purchased at a hardware store (eg. Home Depot)
Safety concerns:

None