Oberton 12NB600

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
• Frequency response 50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.9Hz
• Mechanical quality factor QMS 6.97
• Electrical quality factor QES 0.20
• Total quality factor QTS 0.19

Large signal parameters

• Maximum linear excursion xmax 7.5mm
• Air volume displaced at xmax VD 386cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.82mH
• VC Diameter 100mm
• Winding height HVC 22mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.02T
• Force factor Bl 28.4N/A
• Motor constant Bl/√RE 12.8N/√W
• Air gap height HAG 14mm
• Material Neodymium

Diaphragm

• Effective diameter 256mm
• Effective area SD 515cm²
• Moving mass MMS 102g
• Moving mass (without air load) MMD 93.1g
• Material Kevlar paper

Suspensions

• Stiffness KMS 10.4N/mm
• Compliance CMS 96µm/N
• Equivalent volume to the compliance VAS 35.7L
• Mechanical resistance RMS 4.66N·s/m

Dimensions

• Nominal diameter 12″
• 315mm
• Overall diameter 315mm
• Baffle cutout diameter 280mm
• Overall depth 185mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 7.8kg
• Frame material Die Cast Aluminium