Power RMS / max. P 300 / 600 Watts
Impedance Z 2 x 2 Ω
DC resistance Re 2 x 1.6 Ω
Resonance frequency Fs 34 Hz
Mechanical Q factor Qms 6.37
Electrical Q factor Qes 0.49
Total Q factor Qts 0.45
Compliance Cms 198 μm/N
Equivalent air volume Vas 34 L
Force factor B*I 12.7 Tm
Efficiency 1 W / 1 m SPL 87.0 dB
Cone area Sd 353 cm²
Moving mass Mms 112 g
Cone material Sandwich paper cone
Mechanical resistance Rms 3.73 kg/s
Voice coil diameter ø 50.8 mm
Voice coil winding height 19 mm
Max. linear excursion Xmax +/- 6.0 mm
Outer diameter ø 262 mm / 10.31"
Installation diameter ø 229 mm / 9.01"
Installation depth 84.5 mm / 3.33" 

Recommended enclosure volumes
Sealed box
Net volume 14 L
Lower limiting frequency (-3dB) 46 Hz
Recommended DSP settings Recommended "self-define" highpass filter with 45 Hz cut-off frequency and Q = 1.3;
additional EQ filter 100 Hz / Q = 1.0 / -3 dB

Vented box
Net volume 16 L
Port diameter ø 70 mm / 2.76"
Port area 38 cm²
Port length 38 cm / 14.96"
Port tuning frequency Fb 37 Hz
Lower limiting frequency (-3dB) 39 Hz
Recommended DSP settings Recommended "self-define" highpass filter with 37 Hz cut-off frequency and Q = 1.2;
additional EQ filter 95 Hz / Q = 0.7 / -3 dB
Scope of delivery
1 x Subwoofer HELIX K 10S
1x Grille
1 x Gasket
1x Connecting terminal
1 x Data sheet