jbl 2405h difference in ohm

[sgaggy]

ciao to all ,dear friends i have this problem,two jbl 2405h with measured 6,5ohm and 5,5ohm,there is one that i changed diagraph or is a normal tollerance.other problem,my jbl 2215b have an impedance measured is 8 ohm to 10ohm is normally.
thank you vito from italy.:banghead: