HELIX K 12W

Power RMS / max. P300 / 600 Watt

Impedance Z2 x 2 Ω

DC resistance Re2 x 1.6 Ω

Resonance frequency Fs32 Hz

Mechanical Q factor Qms3.70

Electrical Q factor Qes0.46

Total Q factorQts0.41

ComplianceCms179 μm/N

Equivalent air volumeVas66 L

Force factor B*I13.7 Tm

Efficiency 1 W / 1 mSPL90.0 dB

Cone area Sd515 cm²

Moving mass Mms134 g

Cone material Hand-scooped paper cone

Mechanical resistance Rms7.33 kg/s

Voice coil diameterø50.8 mm

Voice coil winding height 24 mm

Max. linear excursion Xmax+/- 8.0 mm

Outer diameterø316 mm / 12.44″

Installation diameterø286 mm / 11.26

Installation depth 144 mm / 5.67″

Recommended enclosure volumes

Sealed box

Net volume 18 L

Lower limiting frequency (-3dB) 49 Hz

Vented box

Net volume 30 L

Port diameterø100 mm / 3.94″

Port area 78 cm²

Port length 28 cm / 9.84″

Port tuning frequencyFb39 Hz

Lower limiting frequency (-3dB) 39 Hz.