From Florian:
These measurements are mixing loudspeaker measuring applications modalities with the reinforce instrument headphones. It is totally unusual to realize such tech data for headphones:
•"Power Handling Capacity" of 1500mW (IEC <> made for loudspeakers!!!). Short extract: "Power handling capacity Impedance Recommended input power Dispersion ... 2000 W IEC norm 268-5 4 ohms/loadspeaker nominal 1500 – 3000 W into 4 ohms .... In the eighties we had some "destroying lever" data's, but also this was finished in IEC ...
•Please visit from my standard group collegue's paper:
AES E-Library: Power Handling Capacity of Loudspeakers by Teuber, Wolfgang; Völker, Ernst-Joachim
•SENSIVITY in dB/mW for the Ed. 9 is 96 dB and it shows based on the impedance (pre-amp plus divers) at what kind of levels how much VOLTAGES are ... frequency 1 kHz / sinusodial.
•Read this: >>>>> Tension = U in [V], Power = P in [W], Impedance = R in [OHM]; rule / formula >> P = U*U/R = U/R >> U = "square of [P*R]". So you are able to calculate and compare Volt's and Watt's based on the variing Impedances. But pay attention: The dB/V and the SPL due to 1 VOLT is a dB based on "20*log(U1/U2)"; 20 dB = factor 10 !!! ----> and now POWER: dB/mW is based on the "10*log(P1/P2)"; 10 dB = factor 10 !!!
•Or this: The "intelligence of the data's" are to convert them by calculating with the impedance and tension for the power values >>>> P = U*U/R; here U = Umax; P in [W]; W means Watt; 1000 mW = 1W !!!!
Hope that helps.