by JeremyC » Fri Jul 22, 2005 2:11 pm
Ok guys, here is one for you. I was playing with my head units time delays the other day, and decided it was time to figure out the mathematical way of setting the time delays instead of doing it by ear. So this is what I came up with. Feel free to look it over and point out anything that I may have missed, or miscalculated.
Sound waves travel at 1130 ft per second at sea level with a temperature of 70 degrees. (13.5 inches a microsecond)
If the temperature was to raised from 70 deg to 90 deg the speed would increase by 5%
So if your living somewhere with an 80 deg average
1130 X .025 = 28.25 28.25 + 1130 = 1158.25 ft per second or 13.84 inches a microsecond.
Lets say there is a 2 ft difference in distance from your driver side / passenger side mid range speakers and your ear.
24 / 13.84 = 1.73 microsecond
So you would set your driver side mid with a 1.73 microsecond delay.
Ok guys, here is one for you. I was playing with my head units time delays the other day, and decided it was time to figure out the mathematical way of setting the time delays instead of doing it by ear. So this is what I came up with. Feel free to look it over and point out anything that I may have missed, or miscalculated.
Sound waves travel at 1130 ft per second at sea level with a temperature of 70 degrees. (13.5 inches a microsecond)
If the temperature was to raised from 70 deg to 90 deg the speed would increase by 5%
So if your living somewhere with an 80 deg average
1130 X .025 = 28.25 28.25 + 1130 = 1158.25 ft per second or 13.84 inches a microsecond.
Lets say there is a 2 ft difference in distance from your driver side / passenger side mid range speakers and your ear.
24 / 13.84 = 1.73 microsecond
So you would set your driver side mid with a 1.73 microsecond delay.