Accuton C158-6-851

6.25" (15cm) Keramik Tief-/ Mitteltöner, 8 Ohm

Highlights:

• 6.25 inch bass-midrange for small bookshelf monitors or slim floorstanders
• small and light voice coil with 25mm titanium voice coil former for high midrange resolution  
• long excursion design for high SPL capabilities

Vented Box design parameters:

• Vb: 10L, Port diameter: 40mm, Length: 145mm, Fres: 46Hz, F-3dB: 47Hz, Q: 0.58 (typical)
• Vb: 15L, Port diameter: 40mm, Length: 100mm, Fres: 43Hz, F-3dB: 41Hz, Q: 0.50 (extended bass)
• Vb: 6.5L, Port diameter: 40mm, Length: 220mm, Fres: 48Hz, F-3dB: 54Hz, Q: 0.61 (0.7dB Ripple @ 100Hz)

Closed Box design parameters:

• Vb: 2.3L, -16dB @ 40Hz, F-3dB: 98Hz, Q: 0.71 (typical)
• Vb: 7L, -14dB @ 40Hz, F-3dB: 96Hz, Q: 0.50 (extended bass)

Mechanical Data:

• Overall diameter/square: 158 mm
  
• Cutout diameter/square: 137 mm
  
• Frontplate depth: 6,0 mm
  
• Overall depth: 82 mm
  
• Motor assembly depth: 34  mm
  
• Motor assembly diameter: 85  mm
  
• Screw fitting: DIN 7984, 4 mm
  
• Terminal: + : 6.3 x 0.8 / - : 4.8 x 0.8
• Shipping weight /net weight (one piece): 1.75 / 1.65 kg
  
• Shipping box size (pair): 180 / 180 / 240 mm

Thiele / Small Parameter:

• Sensitivity Lp (2.83V / 1m): 88 dB
• DC-resistance Re: 7,8 Ohm
  
• Resonance frequency Fs: 30 Hz
  
• Equivalent volume of air Vas: 26.4 L
  
• Mechanical Q Qms: 5.1
  
• Electrical Q Qes: 0.30
  
• Total Q Qts: 0.27
  
• Effective piston area Sd: 113 cm²
  
• Moving mass Mms: 19 g
  
• Suspension compliance Cms: 1.45 mm/N
  
• Mechanical resistance Rms: 0,71 kg * s

Voice Coil Data:

• Power handling P: 120 Watt
  
• Linear excursion xmax: +/- 5 mm
  
• Voice coil diameter: 38 mm
  
• Voice coil former material: Ti
  
• Voice coil material: Cu
  
• Voice coil inductance Le: 0,73 mH
  
• Force factor Bl: 8.7
  
• Motor type: Overhung