timc
02-17-2011, 04:46 AM
Hi all.
I have been looking at the data for alot of drivers, and i notice that very many have a notch in the response where the wavelength equals doubble the diameter of the cone. I know this is the result of the first breakup mode in the cone. The datasheet for the 2269 is a prime example.
On the other hand, the datasheet for the ME120 and teh 1200Fe shows little, to no notch at the corresponding frequencies.
Does anyone know how JBL have engineered their way around this problem?
A few thoughts i have had myself:
-Using ribbed cones, to reduce the amplitude of the breakup.
-Avoid use of straight conical diapraghm.
Any thoughts?
-Tim
I have been looking at the data for alot of drivers, and i notice that very many have a notch in the response where the wavelength equals doubble the diameter of the cone. I know this is the result of the first breakup mode in the cone. The datasheet for the 2269 is a prime example.
On the other hand, the datasheet for the ME120 and teh 1200Fe shows little, to no notch at the corresponding frequencies.
Does anyone know how JBL have engineered their way around this problem?
A few thoughts i have had myself:
-Using ribbed cones, to reduce the amplitude of the breakup.
-Avoid use of straight conical diapraghm.
Any thoughts?
-Tim