Accuton S220-6-222

8,5" Keramik- Sandwich Tieftöner

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

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)

Mechanical Data:

•     Overall diameter/square: 220 mm
•     Cutout diameter/square: 190,5 mm
•     Frontplate depth: 9 mm
•     Overall depth: 107 mm
•     Motor assembly depth: 44 mm
•     Motor assembly diameter: 120 mm
•     Screw fitting:  DIN 7984, 4 mm
•     Terminal: + : 6.3 x 0.8 / - : 4.8 x 0.8
•     Shipping weight /net weight (one piece): 4,1 / 3,8 kg
•     Shipping box size (pair): 250 / 145 / 250 mm

Thiele / Small Parameter:

•     Sensitivity Lp (2.83V / 1m): 92,5 dB
•     DC-resistance Re: 6,7 Ohm
•     Resonance frequency Fs: 21 Hz
•     Equivalent volume of air Vas: 139 L
•     Mechanical Q Qms: 4,4
•     Electrical Q Qes: 0,21
•     Total Q Qts: 0,20
•     Effective piston area Sd: 224 cm²
•     Moving mass Mms: 30 g
•     Suspension compliance Cms: 1,95 mm/N
•     Mechanical resistance Rms: 0,89 kg * s

Voice Coil Data:

•     Power handling P: 150 Watt
•     Linear excursion xmax: +/- 6 mm
•     Voice coil diameter: 55 mm
•     Voice coil former material: Ti
•     Voice coil material: Cu
•     Voice coil inductance Le: 0,42 mH
•     Force factor Bl: 11,5
•     Motor type: Overhung