SB Acoustics Satori MR13P / Paper

The SB Acoustics  SATORI MR13P 5" (13cm) midrange driver with paper/papyrus membrane is available in a 4 ohm and 8 ohm version. The ultra-light membrane is driven by a powerful neodymium drive. The resonance frequency of around 40 Hz is far outside the usable range, which means that the driver plays extremely linearly in the usable range.

• Ventilated, aerodynamic cast aluminum chassis for optimal strength and low compression.
  
• Proprietary cone material with EGYPTIAN PAPYRUS™ -Fibers from our own production.
  
• Soft rubber surround with low damping for optimal transient response.
  
• Advanced BIMAX spider for improved linearity.
  
• Powerful, optimized and low-distortion neodymium motor system.
  
• Non-conductive fiberglass voice coil former for minimal damping.
  
• Extended copper sleeve on the pole piece for low inductance and lower distortion.
  
• CCAW voice coil for reduced moving mass.
  
• Durable silver wires spaced 180° for improved stability.
  
• Ventilated pole piece and coil body for reduced compression.
  
• Low ratio of piston to chassis diameter.
  
• Sealing and bolt hole projections for reduced coupling to the speaker enclosure.

• nominal impedance 4 Ω
  
• Frequency range: 300Hz - 10Khz
  
• DC resistance, Re 3.3 Ω
  
• Inductance of the voice coil, Le 0.11 mH
  
• Effective membrane area, Sd 70 cm2
  
• voice coil diameter 30.5 mm
  
• Height of the voice coil 11 mm
  
• height of the air gap 5 mm
  
• Linear coil stroke (pp) 6 mm
  
• Magnetic flux density 1.08 T
  
• Weight of the magnet 0.1 kg
  
• net weight 0.78 kg
  
• Free air resonance, Fs 41 Hz
  
• Sensitivity (2.83 V / 1 m) 91 dB
  
• Mechanical Q-factor, Qms 2.8
  
• Electrical Q factor, Qes 0.25
  
• overall Q-factor, Qts 0.23
  
• Moving mass including air, Mms 5.4 g
  
• force factor, Bl 4.3 Tm
  
• Equivalent volume, VAS 19.4 liters
  
• Compliance, Cms 2.79 mm/N
  
• Mechanical loss, Rms 0.5 kg/s
  
• Nominal load capacity* 30 W
  
• * IEC 268-5, high pass Butterworth, 200 Hz, 12 dB/Oct.

• nominal impedance 8 Ω
  
• Frequency range: 300Hz - 10Khz
  
• DC resistance, Re 6.8 Ω
  
• Inductance of the voice coil, Le 0.11 mH
  
• Effective membrane area, Sd 70 cm2
  
• voice coil diameter 30.5 mm
  
• Height of the voice coil 11 mm
  
• height of the air gap 5 mm
  
• Linear coil stroke (pp) 6 mm
  
• Magnetic flux density 1.08 T
  
• Weight of the magnet 0.1 kg
  
• net weight 0.78 kg
  
• Free air resonance, Fs 45 Hz
  
• Sensitivity (2.83 V / 1 m) 88 dB
  
• Mechanical Q-factor, Qms 4.25
  
• Electrical Q-factor, Qes 0.33
  
• overall Q-factor, Qts 0.31
  
• Moving mass incl.air, Mms 6.0 g
  
• force factor, Bl 6.1 Tm
  
• Equivalent volume, VAS 12.5 liters
  
• Compliance, Cms 1.86 mm/N
  
• Mechanical loss, Rms 0.4 kg/s
  
• Nominal load capacity* 30 W
  
• * IEC 268-5, high pass Butterworth, 200 Hz, 12 dB/Oct.