Helix K 8W

Power RMS / max. P 300 / 600 Watts
Impedance Z 2 x 2 Ω
DC resistance Re 2 x 1.6 Ω
Resonance frequency Fs 37 Hz
Mechanical Q factor Qms 3.56
Electrical Q factor Qes 0.46
Total Q factor Qts 0.41
Compliance Cms 262 μm/N
Equivalent air volume Vas 17 L
Force factor B*I 10.7 Tm
Efficiency 1 W / 1 m SPL 86.0 dB
Cone area Sd 219 cm²
Moving mass Mms 69 g
Cone material Hand-scooped paper cone
Mechanical resistance Rms 4.54 kg/s
Voice coil diameter ø 50.8 mm
Voice coil winding height 24 mm
Max. linear excursion Xmax +/- 8.0 mm
Outer diameter ø 213 mm / 8.38"
Installation diameter ø 182 mm / 7.17"
Installation depth 101 mm / 3.98"

Recommended enclosure volumes
Sealed box
Net volume 8 L
Lower limiting frequency (-3dB) 50 Hz
Recommended DSP settings Recommended "self-define" highpass filter with 50 Hz cut-off frequency and Q = 1.5,
additional EQ filter 115 Hz / Q = 1.0 / -2.5 dB

Vented box
Net volume 8 L
Port diameter ø 60 mm / 2.36"
Port area 28 cm²
Port length 42 cm / 16.5" (angled port)
Port tuning frequency Fb 43 Hz
Lower limiting frequency (-3dB) 45 Hz
Recommended DSP settings Recommended "self-define" highpass filter with 43 Hz cut-off frequency and Q = 1.5,
additional EQ filter 120 Hz / Q = 0.8 / -3.5 dB
Scope of delivery
1 x Subwoofer HELIX K 8W
1 x Grille
1 x Gasket
1 x Data sheet