Electrical Data
Nominal impedance	Zn	8	ohm
Minimum impedance	Zmin	6.7	ohm
Maximum impedance	Zo	58.3	ohm
DC resistance	Re	5.9	ohm
Voice coil inductance	Le	0.8	mH

T-S Parameters
Resonance Frequency	fs	64.5	Hz
Mechanical Q factor	Qms	3.85
Electrical Q factor	Qes	0.43
Total Q factor	Qts	0.39
Force factor	Bl	7	Tm
Mechanical resistance	Rms	0.93	Kg/s
Moving mass	Mms	8.8	g
Suspension compliance	Cms	0.69	mm/N
Effective cone diameter	D	10.5	cm
Effective piston area	Sd	87	cm2
Equivalent volume	Vas	7.2	ltrs
Sensitivity (2.83V/1m)		88.2	dB
Ratio BL/√(Re)		2.9
Ratio fs/Qts	F	165

Power handling
100h RMS noise test (IEC)	--	W
Long-term Max Power (IEC 18.3)	--	W
Max linear SPL (rms) @ power	--	dB/W
Short Term Max power (IEC 18.2)	--	W

Voice Coil and Magnet Parameters
Voice coil diameter	26	mm
Voice coil height	13	mm
Voice coil layers	2
Height of the gap	6	mm
Linear excursion +/-	3.5	mm
Max mech. excursion +/-	--	mm
Flux density of gap	--	mWb
Total useful flux	0.89	mWb
Diameter of magnet	90	mm
Height of magnet	15	mm
Weight of magnet	0.4	Kg

Notes:
IEC specs refer to IEC 60268-5 third edition
All Tymphany products are RoHS compliant