Max wattage is a pretty useless figure. Min wattage and efficiency mean much more. Keep in mind that a 92db rated speaker will require 1/2 the wattage to hit the same volume as an 89db rated speaker. My main amp is only 20 watts and I never run out of power. However, 94db speakers are much less hungry than logans.
An 86db speaker will need 10 times the wattage to equal that of a 96db rated speaker (usually a horn).
Every 3db requires a doubling of wattage.
Percieved volume will double with an increase of 10db. So, you have to increase by 10 times to double volume. 1 watt on a 90db speaker will need about 9 watts to double the volume. The problem is that to double it again, 20db increase will take a ton of power (approx 75 watts) will achieve around 110db which is THX rated levels.
Now do that for an 86db speaker and you are looking at 175-190 watts to hit the same levels as that 90db speaker.
An 86db speaker will need 10 times the wattage to equal that of a 96db rated speaker (usually a horn).
Every 3db requires a doubling of wattage.
Percieved volume will double with an increase of 10db. So, you have to increase by 10 times to double volume. 1 watt on a 90db speaker will need about 9 watts to double the volume. The problem is that to double it again, 20db increase will take a ton of power (approx 75 watts) will achieve around 110db which is THX rated levels.
Now do that for an 86db speaker and you are looking at 175-190 watts to hit the same levels as that 90db speaker.