Elemental force with sensitivity

At the very first glance, it appears what the new Q subwoofers are designed for. The solid aluminum diecast baskets with diamond cut as well as the massive triple ferrite magnet systems clearly signalize that these subwoofers really mean it. The extremely stiff, hand-scooped cones and oversized voice coils with enormous winding height are literally predestinated to turn incredible volumes of air into deep bass sounds.

Yet sheer power alone is not sufficient – numerous sophisticated technical details together with a smart mix of materials assure highest precision and detailed bass reproduction which will satisfy even most demanding music enthusiasts.

These subwoofers form a perfect symbiosis of maximum sound pressure and state-of-the-art sound quality in a new dimension.



  • Extremely rigid non-pressed paper cone for maximum stiffness
  • Wide low-loss foam surround for maximum cone excursions
  • Concave PP dustcap with embossed HELIX logo
  • 2 x 2 Ohms impedance allows most flexible configuration
  • High-temperature dual voice coil with enormous winding height for outstanding linear excursion
  • Rock-solid diecast basket with diamond cut
  • Removable rubber gasket
  • Rugged butyl magnet cover with HELIX lettering for perfect magnet protection
  • Solid push terminals for large wire gauge
  • Extremely powerful, 9 x ventilated triple ferrite magnet system for highest magnetic flux linearity
Power RMS / max. P750 / 1,500 Watts
Impedance Z2 x 2 Ω
DC resistance Re2 x 1.95 Ω
Resonance frequency Fs35 Hz
Mechanical Q factor Qms4.17
Electrical Q factor Qes0.42
Total Q factorQts0.38
ComplianceCms99 μm/N
Equivalent air volumeVas13.8 L
Force factor B*I21.5 Tm
Efficiency 1 W / 1 mSPL85.0 dB
Cone area Sd333 cm²
Moving mass Mms220 g
Cone material Non-pressed paper cone
Mechanical resistance Rms11.9 kg/s
Voice coil diameterø63.5 mm
Voice coil winding height 40 mm
Max. linear excursion Xmax+/- 14.0 mm
Outer diameterø274 mm / 10.79″
Installation diameterø234 mm / 9.21″
Installation depth 163 mm / 6.42″
Recommended enclosure volumes 
Sealed box 
Net volume 15 L
Lower limiting frequency (-3dB) 52 Hz
Vented box 
Net volume 30 L
Port diameterø80 mm / 3.15″
Port area 50 cm²
Port length 25 cm / 9.84″
Port tuning frequencyFb38 Hz
Lower limiting frequency (-3dB) 39 Hz
Delivery contents

1 x Subwoofer HELIX Q 10W
1 x Rubber gasket
1 x Data sheet