SB Acoustics SB13PFC25-4-COAX

The SB Acoustics SB13PFCR25-4-COAX 5" (13cm) coaxial speaker fiber/paper composite  is driven by a powerful ferrite magnet. The resonance frequency of around 40 Hz is far outside the usable range, which means that the driver is extremely linear in the usable range and can be used optimally in the broadband range. The generously ventilated centering spider optimizes the rear compression behavior to a maximum and provides additional cooling. The flattened basket ensures the smallest possible surface area on the baffle, which makes it easier to install the driver in small housings or tight positions in the car.

• Ventilated, reinforced plastic chassis
  
• Proprietary cone material with natural fibers from our own production
  
• Soft rubber surround with low damping for improved transient response
• Optimized engine system
  
• Non-resonant, durable connecting wires
  
• Compact dome tweeter with large surround
• Frequency range: 80Hz - 20kHz

• nominal impedance 4 Ω
  
• DC resistance, Re 3.2 Ω
  
• Inductance of the voice coil, Le 0.30 mH
  
• Effective membrane area, Sd 82 cm2
  
• Diameter of the voice coil 25.4 mm
  
• Height of the voice coil 14.3 mm
  
• height of the air gap 5 mm
  
• Linear coil stroke (pp) 9.3 mm
  
• Magnetic flux density 1.1 T
  
• Weight of the magnet 0.36 kg
  
• net weight 0.93 kg
  
• Free air resonance, Fs 43 Hz
  
• Sensitivity (2.83V/1m) 90 dB
  
• Mechanical Q-factor, Qms 2.26
  
• Electrical Q-factor, Qes 0.3
  
• overall Q-factor, Qts 0.27
  
• Moving mass including air, Mms 9.1 g
  
• force factor, Bl 5.1 Tm
  
• Equivalent volume, Vas 14.4 liters
  
• Compliance, Cms 1.51 mm/N
  
• Mechanical loss, Rms 1.1 kg/s
  
• Nominal load capacity* 40 W
  
• * IEC 268-5, T/S parameters measured on retracted drives.

• nominal impedance 4 Ω
  
• DC resistance, Re 3.0 Ω
  
• voice coil diameter 12.4 mm
  
• Height of the voice coil 1.2 mm
  
• height of the air gap 1.5 mm
  
• resonance of free air, Fs 1300 Hz
  
• Sensitivity (2.83V/1m) 89 dB
  
• Nominal load capacity* 10 W
  
• Magnetic flux density 1.05 T
  
• Weight of the magnet 0.003 kg
  
• Net weight 0.014 kg