Accuton S280-18-282N

11" (28cm)  Keramik- Sandwich Tieftöner, Neodymmagnet, 18 Ohm

Highlights:

• 11 inch sandwich cone bass with high efficiency for 3-way designs
• large sized voice coil with 55mm titanium voice coil former 
• big, underhung 120mm Neodymium magnet system for very low distortion
• high mechanical excursion
• special multi spoke basket with improved airflow design

Vented box design parameters:

• Vb: 55L, Port diameter: 70mm, Length: 190mm, Fres: 29Hz, F-3dB: 33Hz, Q: 0.58 (optimal)
• Vb: 75L, Port diameter: 70mm, Length: 114mm, Fres: 29.5Hz, F-3dB: 29.5Hz, Q: 0.50 (extended bass)
• Vb: 45L, Port diameter: 70mm, Length: 227mm, Fres: 30Hz, F-3dB: 36Hz, Q: 0.61 (0.7dB Ripple @ 50Hz)

Closed Box design parameters:

• Vb: 17L, -9dB @ 40Hz, -20dB @ 20Hz, F-3dB: 50Hz, Q: 0.71 (typical
• Vb: 43L, -6dB @ 40Hz, -15dB @ 20Hz, F-3dB: 51Hz, Q: 0.50 (extended bass)

Mechanical Data:

• Overall diameter/square: 280 mm
  
• Cutout diameter/square: 251,2 mm
  
• Frontplate depth: 8,45 mm
  
• Overall depth: 131,95 mm
  
• Motor assembly depth: 49 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): 4,5 / 3,8 kg
  
• Shipping box size (pair): 300 / 145 / 300 mm

Thiele / Small Parameter:

• Sensitivity Lp (2.83V / 1m): 88 dB
• DC-resistance Re: 18.5Ohm
  
• Resonance frequency Fs: 18 Hz
  
• Equivalent volume of air Vas: 226 L
  
• Mechanical Q Qms: 6.87
  
• Electrical Q Qes: 0.27
  
• Total Q Qts: 0.26
  
• Effective piston area Sd: 408 cm²
  
• Moving mass Mms: 83 g
  
• Suspension compliance Cms: 0,94 mm/N
  
• Mechanical resistance Rms: 1,37 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: 1.96 mH
  
• Force factor Bl: 25.4
  
• Motor type: Underhung