Accuton C220-6-222

8.5" (22cm) Keramik- Tieftöner, Neodymmagnet, 6 Ohm

Highlights:

• 8.5 inch bass-midrange with high efficiency for 2 or 3-way designs
• large sized voice coil with 55mm titanium voice coil former for high midrange resolution 
• big, underhung 120mm Neodymium magnet system for very low distortion

Vented box design parameters:

• Vb: 29L, Fres: 23Hz with passive radiator, -12dB @ 25Hz, Q: 0.47 (optimal A/V alignment)
• Vb: 24L, Port diameter: 70mm, Length: 200mm, Fres: 43.5Hz, F-3dB: 47Hz, Q: 0.50
• Vb: 36L, Port diameter: 70mm, Length: 145mm, Fres: 40Hz, F-3dB: 39Hz, Q: 0.43 (extended bass)

Closed Box design parameters:

• Vb: 11.5L, -12dB @ 40Hz, F-3dB: 74Hz, Q: 0.71 (typical)
• Vb: 24L, -9dB @ 40Hz, F-3dB: 75Hz, 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 / 290 / 250 mm

Thiele / Small Parameter:

• Sensitivity Lp (2.83V / 1m): 93 dB
• DC-resistance Re: 6,7 Ohm
  
• Resonance frequency Fs: 24 Hz
  
• Equivalent volume of air Vas: 115 L
  
• Mechanical Q Qms: 4,4
  
• Electrical Q Qes: 0,2
  
• Total Q Qts: 0,19
  
• Effective piston area Sd: 224 cm²
  
• Moving mass Mms: 27 g
  
• Suspension compliance Cms: 1,61 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