Electrical Data
Nominal impedance	Zn	8	ohm
Minimum impedance	Zmin	4.7	ohm
Maximum impedance	Zo	64.2	ohm
DC resistance	Re	3.5	ohm
Voice coil inductance	Le	4.2	mH
Capacitor in series with x ohm	Cc	38	uF

T-S Parameters
Resonance Frequency	fs	18.1	Hz
Mechanical Q factor	Qms	3.7
Electrical Q factor	Qes	0.21
Total Q factor	Qts	0.2
Force factor	Bl	17.6	Tm
Mechanical resistance	Rms	5.12	Kg/s
Moving mass	Mms	166.3	g
Suspension compliance	Cms	0.46	mm/N
Effective cone diameter	D	24.4	cm
Effective piston area	Sd	466	cm2
Equivalent volume	Vas	139.2	ltrs
Sensitivity (2.83V/1m)		90.6	dB
Ratio BL/√(Re)		90
Ratio fs/Qts	F	--

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	51	mm
Voice coil height	33	mm
Voice coil layers	4
Height of the gap	8	mm
Linear excursion +/-	--	mm
Max mech. excursion +/-	--	mm
Flux density of gap	1.04	mWb
Total useful flux	2.5	mWb
Diameter of magnet	147	mm
Height of magnet	35	mm
Weight of magnet	2.42	Kg

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