How loud is 1 Watt (with an 87db Loudspeaker)?

This video is presented by Harley Lovegrove, Technical Director of Pearl Acoustics loudspeakers. With many people chasing massively powerful amplifiers for domestic systems, I thought it might be useful to demonstrate just how loud 1 Watt per channel is when it is pumped into a pair of 87db loudspeakers? In this video you will see how loud the music gets as we reach 1, then 2 and eventually 6 Watts of power into a pair of Sibelius SG loudspeakers. Please note - there is an error in the graphics at 03:33: 5,5V = 4Watts and not 2! Thanks to Claes Jegeras for pointing that out. The piece of music featured in the video is ’Storm’ taken from ’Summer’ part of Antonio Vivaldi’s Four Seasons. It is a rights free recording from: Audio jungle – Envatomarket