You are trying to decide between two new stereo amplifiers. One is rated at 72 W

Q: You are trying to decide between two new stereo amplifiers. One is rated at 72 W

p1 = 72 w p2 = 125 w 10 log (P2÷P1) 10 log (125 ÷ 72) 2.396 So the 125 W is likely to be 2.396 times more powerful than the 72 W.

ID: 1424824 • Letter: Y

Question

You are trying to decide between two new stereo amplifiers. One is rated at 72 W per channel and the other is rated at 125 W per channel. In terms of dB, how much louder will the more powerful amplifier be when both are producing sound at their maximum levels? You are trying to decide between two new stereo amplifiers. One is rated at 72 W per channel and the other is rated at 125 W per channel. In terms of dB, how much louder will the more powerful amplifier be when both are producing sound at their maximum levels?

Explanation / Answer

p1 = 72 w
p2 = 125 w

10 log (P2÷P1)
10 log (125 ÷ 72)
2.396

So the 125 W is likely to be 2.396 times more powerful than the 72 W.

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You are trying to decide between two new stereo amplifiers. One is rated at 72 W

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