Scan Speak 18W8535-00 Tief-/Mitteltöner

The Symmetric Drive (SD-1) concept with copper in the magnet system was invented by Scan-Speak. High-quality magnet system design has thus been a key feature of Scan-Speak design since the companys inception. The Classic woofers are highly praised, and are used in some of the worlds most exceptional high-end Loudspeakers. Some feature Kevlar cones, others have the innovative Carbon fibre paper cones.

Thiele-/ Small Parameter

• Resonance frequency [fs]: 26 Hz
  
• Mechanical Q factor [Qms]: 2.50
  
• Electrical Q factor [Qes]: 0.45
  
• Total Q factor [Qts]: 0.38
  
• Force factor [Bl]: 5.7 Tm
  
• Mechanical resistance [Rms]: 1.01 kg/s
  
• Moving mass [Mms]: 15.5 g
  
• Suspension compliance [Cms]: 2.42 mm/N
  
• Effective diaph. diameter [D]: 136 mm
  
• Effective piston area [Sd]: 145 cm²
  
• Equivalent volume [Vas]: 71.2 l
  
• Sensitivity (2.83V/1m): 86.5 dB
  
• Ratio Bl/vRe: 2.37 N/vW
  
• Ratio fs/Qts: 68 Hz

Electrical Data

• Nominal impedance [Zn]: 8 Ω
  
• Minimum impedance [Zmin]: 6.8 Ω
  
• Maximum impedance [Zo]: 38.0 Ω
  
• DC resistance [Re]: 5.8 Ω
  
• Voice coil inductance [Le]: 0.3 mH
  

Power Handling

• 100h RMS noise test (IEC 17.1): 70 W
• Long-term max power (IEC 17.3): - W
  

Voice Coil and Magnet Data

• Voice coil diameter: 38 mm
• Voice coil height: 15 mm
  
• Voice coil layers: 2
  
• Height of gap: 5 mm
  
• Linear excursion: ± 5 mm
  
• Max mech. excursion: ± 10 mm
  
• Unit weight: 1.1 kg