Question

You are trying to decide between two new stereo amplifiers. One is rated at 75 W per channel and the other is rated at 120 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

Answer 1

Answer:

It would depend if you're combining channels or not. Assuming your' only using 1 channel per amp then the 120 W amp will be 45 W more powerful. this also assumes that the Ohm rating on the amps is the same. In terms of percentage increase, it would be a 60% increase in power.

Explanation:

Answer 2

Based on the ratings on both channels and the sound they can produce when at maximum, the difference will be 2.04 dB.

How to express current in DB

Decibel = 10 x Log (Stereo current / Threshold of hearing)

Solving for the difference.

= (10 x Log (120 / Threshold of hearing)) - (10 x Log (75/ Threshold of hearing))

= 10 x Log ( (120/ Threshold) x (Threshold / 75)

= 10 x Log (120 / 75)

= 2.04 dB

In conclusion, the more powerful amplifier will be 2.04 dB louder.

Find out more on calculating decibels at https://brainly.com/question/9367064.