S220-6-222

Sandwich Bass

Dome material	Sandwich
Application	Bass
Overall diameter	220 MM
Cutout Diameter	191 MM
Overall depth	105 MM
Motor assembly depth	42 MM
Motor assembly diameter	120 MM

Main Features

underhung motor design
55mm Titanium VC Former
Soft Rubber Surround
Vented VC, Pole Piece & Spider
31 HZ - 1 KHZ in ventilierter Box

Technology
3D Model
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Vented box design parameters:

Vb: 30L, Fres: 23Hz with passive radiator, -12dB @ 25Hz, Q: 0.47 (optimal A/V alignment)
Vb: 25L, Port diameter: 70mm, Length: 230mm, Fres: 40Hz, F-3dB: 43Hz, Q: 0.50
Vb: 40L, Port diameter: 70mm, Length: 155mm, Fres: 37Hz, F-3dB: 37Hz, Q: 0.43 (extended bass)

Closed Box design parameters:

Vb: 12L, -11dB @ 40Hz, F-3dB: 69Hz, Q: 0.71 (typical)
Vb: 25L, -8dB @ 40Hz, F-3dB: 70Hz, Q: 0.50 (extended bass)

Highlights

8.5 inch sandwich cone bass with high efficiency for 2 or 3-way designs.
Large sized voice coil with 55mm titanium voice coil former.
Big, underhung 120mm Neodymium magnet system for very low distortion.

Mechanical Data

Specification	Value	Unit
Overall diameter	220	mm
Cutout diameter	191	mm
Min. frontplate thickness	9	mm
Overall depth	112.5	mm
Motor assembly depth	49.5	mm
Motor assembly diameter	120	mm
Screwfitting	DIN 7984 / Ø 4.50	mm
Terminal	+: 6.3 x 0.8 / -: 4.8 x 0.8	mm
Shipping weight (pair)	9.5	Kg
Shipping box size (pair)	250/290/250	mm

Thiele Small Parameters

Specification		Value	Unit
Sensitivity (2.83V / 1m)	Spl	91.5	dB
DC-resistance	Re	6.52	Ohm
Resonance frequency	Fs	25	Hz
Equivalent volume of air	Vas	89.68	ltr
Mechanical Q	Qms	3.83
Electrical Q	Qes	0.27
Total Q	Qts	0.26
Effective piston area	Sd	224	Cm2
Moving mass	Mms	32.15	g
Suspension compliance	CMs	1.26	mm/n
Mechanical resistance	Rms	1.32	Kg*s

voice coil parameters

Specification		Value	Unit
Power handling	P	150	W
Linear excursion	Xmax	+/-5.25	mm
Voice coil diameter		55	mm
Voice coil former material		Ti
Voice coil material		Cu
Voice coil inductance	Le	0.36	mH
Force factor	Bl	10.95	N/A
Motor type	Underhung
Ferrofluid filling		No

Frequency Response [db]

Impedance [OHM]