HELIX Q 12W

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 4.61
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 14mm
• Air volume displaced at xmax VD 755cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.9Ω
• Inductance (1kHz, in series, estimated) LE 4.11mH
• VC Diameter 76mm
• Winding height HVC 40mm

Magnet

• Force factor (in series) Bl 26.8N/A
• Motor constant Bl/√RE 13.6N/√W

Diaphragm

• Effective diameter 262mm
• Effective area SD 539cm²
• Moving mass MMS 330g
• Moving mass (without air load) MMD 321g
• Material Non-pressed paper cone

Suspensions

• Stiffness KMS 14.3N/mm
• Compliance CMS 70µm/N
• Equivalent volume to the compliance VAS 24.7L
• Mechanical resistance RMS 16N·s/m

Dimensions

• Nominal diameter 12″
• 326mm
• Overall diameter 326mm
• Baffle cutout diameter 284mm
• Mounting depth 188mm
• Volume occupied by the driver (estimated) 2.9L