Concept explainers
To Find: The power output, if a stereo is rated at 150 W output at 1000 Hz and the power output drops by 10 dB at 15 kHz.
Answer to Problem 71GP
The power output drop is
Explanation of Solution
Given:
Power output drops (Pout) = 10 dB
Power input (Pin) = 150 Hz
Formula used:
Write the expression for intensity of sound is
Here,
Calculation:
The Intensity of sound is given by,
Equation further simplified as
Dividing by 10 on both sides
The power output is 15 W.
Conclusion:
The power output is 15 W, if a stereo is rated at 150 W output at 1000 Hz and the power output drops by 10 dB at 15 kHz.
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