Question

Sitting on a sofa, your roommate hears 100 dB from your stereo, which supplies 10 W to each speaker. He says this is lame and requests a system with a maximum 120 dB. How many watts of power should the new stereo supply to each speaker?

Answer 1

We know a ten times inere are to the power output will result in and 10de increase in loudness, 20 dB increase we have to increase the power output 10x10 = loo thes. Initially power output of each speaker is low provided by the stered unani 1000w. So now ລ 0 We can proof it mathematically. 1. Let Bowen power input of each speaker is Pi for 180 dB gain the power output of each speaker is P, : .. 19 lang na (l) = 10 Pi: 10 X 100 VO OWO . Now let for 120 db gaur me power output of each speaker a provided by the stereo, 10logo ( 2 ) = 120 * P2 = P; 81012 = 10x10 toxon = 1000 1000 Watts of power CSScanned with CamScanner should the new stéreo supply to each speaker.