Nominal Impedance 8 Ω
DC resistance, Re 5.6 Ω
Voice coil inductance, Le 0.30 mH
Effective piston area, Sd 216cm²
Voice coil diameter 30.5 mm
Voice coil height 16.3 mm
Air gap height 5 mm
Linear coil travel (p-p) 11.3 mm
Magnetic flux density 1.2 T
Magnet weight 0.54 kg
Net weight 1.43 kg
Free air resonance, Fs 39 Hz
Sensitivity (2.83V/1m) 92 dB
Mechanical Q-factor, Qms 3.26
Electrical Q-factor, Qes 0.45
Total Q-factor, Qts 0.40
Moving mass incl. air,Mms 14.7 g
Force factor, Bl 6.7 Tm
Equivalent volume, Vas 73.2 liters
Compliance, Cms 1.12 mm/N
Mechanical loss, Rms 1.1 kg/s
Rated power handling* 50 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.
BOX EXAMPLES 17L to 28L Sealed 75Hz (F3)
28L Vented port 125x50mmD 55Hz (F3)
35L Vented port 100x50mmD 50Hz (F3)
42L Vented port 150x75mmD 45Hz (F3)
Unboxing Video
DIY with measurements review
Transmission Line Designer
Speaker Workshop 1.0