Oberton 12NB601

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.6dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.5Hz
• Mechanical quality factor QMS 10.02
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 8.8mm
• Air volume displaced at xmax VD 450cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.97mH
• VC Diameter 100mm
• Winding height HVC 23mm
• Winding material Aluminium
• Former material Glass fiber

Magnet

• Flux density B 1.3T
• Force factor Bl 22.9N/A
• Motor constant Bl/√RE 9.79N/√W
• Air gap height HAG 11mm
• Material Neodymium

Diaphragm

• Effective diameter 256mm
• Effective area SD 515cm²
• Moving mass MMS 95g
• Moving mass (without air load) MMD 86.6g
• Material Paper with glassfiber

Suspensions

• Stiffness KMS 9.52N/mm
• Compliance CMS 105µm/N
• Equivalent volume to the compliance VAS 38.7L
• Mechanical resistance RMS 3.01N·s/m

Dimensions

• Nominal diameter 12″
• 315mm
• Overall diameter 315mm
• Baffle cutout diameter 280mm
• Overall depth 180mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 7.8kg
• Frame material Die Cast Aluminium