T/S Parameters (Tested on a Klippel):
Electrical Parameters
- Electrical voice coil resistance at DC: Re 3.43 Ohm
- Frequency independent part of voice coil inductance: Le 0.899 mH
- Para-inductance of voice coil: L2 1.32 mH
- Electrical resistance due to eddy current losses: R2 13.71 Ohm
- Electrical capacitance representing moving mass: Cmes 610.26 μF
- Electrical inductance representing driver compliance: Lces 20.57 mH
- Resistance due to mechanical losses: Res 34.13 Ohm, Driver resonance frequency: fs 44.9 Hz
Mechanical Parameters
Using laser
- Mechanical mass of driver diaphragm assembly including air load and voice coil: Mms 54.697 g
- Mechanical mass of voice coil and diaphragm without air load: Mmd (Sd) 51.475 g
- Mechanical resistance of total-driver losses: Rms 2.626 kg/s
- Mechanical compliance of driver suspension: Cms 0.229 mm/N
- Mechanical stiffness of driver suspension: Kms 4.36 N/mm
- Force factor (Bl product): Bl 9.467 N/A, Suspension creep factor: Lambda s 0.046
Loss factors
- Total Q-factor considering all losses: Qtp 0.538
- Mechanical Q-factor of driver in free air considering Rms only: Qms 5.879
- Electrical Q-factor of driver in free air considering Re only: Qes 0.591
- Total Q-factor considering Re and Rms only: Qts 0.537
Other Parameters
- Equivalent air volume of suspension: Vas 13.1298 (1)
- Reference efficiency (2 pi-radiation using Re): n0 0.194 %
- Characteristic sound pressure level (SPL at 1m for 1W @ Re): Lm 85.07 dB
- Nominal sensitivity (SPL at 1m for 1W @ Zn): Lnom 85.74 dB
- Root-mean-square fitting error of driver impedance Z(f): rmse Z 4.04 %
- Root-mean-square fitting error of transfer function Hx (f): rmse Hx 2.29 %
- Diaphragm area: Sd 201.06 cm2