Driver’s Varying Impedance

As we all know, any driver is going to have varynig impedance depending on: driver, frequency, temperature, ect... Well, I plotted out the impedance of my sub for fun. Here it is It's an Infinity Kappa Perfect 12.1D (wired for 2 ohms) in a 1.25 cubic ft sealed box. Now my question is, is there any way that I could tame that huge spike at ~44 Hz, or should I not even worry about it?? Paul *edit* I noticed that the spike has a Q of about 1.

Look at the JBL10GTI for a comparison, just for kicks.   37.5 ohms at 38 Hz, what a peak.   And you know it's a very good sub.Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

I guess this would be a graph of the frequency response. So I'm wondering if the impedance of the sub were lowered to be level, then would the SPL at ~44Hz increase?? Paul

Frequency response is the default graph:  "system overall-transfer function magnitude".  Check out the help file, and double-click  on "using WinISD Pro" to open "graph types explained"Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Thanks man. Paul

The imedence curve you posted is normal.  The peak at 43Hz indicates the driver's resonant frequency.Support the12volt.com