• Cast aluminum frame promotes motor cooling
• Sculptural design improves airflow and reduces reflections
• High strength compact neodymium magnet system
• Proprietary coated natural wood fiber cone with half-roll rubber surround
• 1-1/4" long throw voice coil on titanium coil former
• Copper pole piece cap for extended RF response
• Impedance available in 4 ohms or 8 ohms

• 4" (10cm) midrange driver from Tymphany by Peerless of the NE series.
• power consumption (RMS) 35-45 watts
  
• Power handling (max) 90 watts
• Frequency response 60 to 8,000 Hz

Dimensions:

• Total outer diameter 12.3cm
  
• Total depth 6,5cm
  
• Baffle cutout diameter 9.8cm
• Mounting holes 5

Parameters 4 Ohm version:

• Transducer size 102 mm
  
• DC resistance Re 3.4 Ω
  
• Resonant frequency Fs 78 Hz
  
• Sensitivity @ 2.83V/1m 89.1 dB
  
• Sensitivity @ 1 W/1 m 86.1 dB
  
• Nominal-Power(IEC 268-5) 35 W
  
• Test spectrum bandwidth 100 - 8000 Hz
  
• Effective diaphragm area Sd 54.1 cm2
  
• Moving mass Mms 7.23 g
  
• Motor force factor Β 7.72 Bl2/Re
  
• Voice coil inner diameter 32.4 mm
  
• Gap height Hag 4 mm
  
• Maximum linear deflection Xmax 4.33 mm
  
• Minimum impedance Zmin 3.8 Ω
  
• Voice coil inductance Le 0.082 mH
  
• Mechanical Q-factor Qms 5.49
  
• Electrical quality factor Qes 0.46
  
• Total Q-factor Qts 0.43
  
• Suspension compliance Cms 570 μm/N
  
• Net weight 0.413 kg
  
• Equivalent volume Vas 2.38 L
  

Parameters 8 Ohm version:

• Transducer size 102 mm
  
• DC resistance Re 6.1 Ω
  
• Resonant frequency Fs 73 Hz
  
• Sensitivity @ 2.83V/1m 86.1 dB
  
• Sensitivity @ 1 W/1 m 86.1 dB
  
• Rated power (IEC 268-5) 45 W
  
• Test spectrum bandwidth 100 - 8000 Hz
  
• Effective diaphragm areaSd 54.1 cm2
  
• Moving mass Mms 5.91 g
  
• Motor force factor Β 5.6 Bl2/Re
  
• Voice coil inner diameter 32.4 mm
  
• Gap height Hag 4 mm
  
• Maximum linear deflection Xmax 4.43 mm
  
• Minimum impedance Zmin 7 Ω
  
• Voice coil inductance Le 0.118 mH
  
• Mechanical Q-factor Qms 9.37
  
• Electrical quality factor Qes 0.487
  
• Total Q-factor Qts 0.46
  
• Suspension compliance Cms 800 μm/N
  
• Net weight 0.41 kg
  
• Equivalent volume Vas 3,3 L

Housing Recommendation:

• Closed volume: 500ml
• Cut-off frequency -3dB: 141Hz
• Bass reflex: 700ml
• cut-off frequency -3dB: 84Hz