Oberton 12NMB600

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.9dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 41Hz
• Mechanical quality factor QMS 4.77
• Electrical quality factor QES 0.14
• Total quality factor QTS 0.13

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 360cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 100mm
• Winding height HVC 16mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 1.25T
• Force factor Bl 27.8N/A
• Motor constant Bl/√RE 12.1N/√W
• Air gap height HAG 12mm
• Material Neodymium

Diaphragm

• Effective diameter 256mm
• Effective area SD 515cm²
• Moving mass MMS 78.6g
• Moving mass (without air load) MMD 70.1g
• Material Kevlar paper

Suspensions

• Stiffness KMS 5.24N/mm
• Compliance CMS 191µm/N
• Equivalent volume to the compliance VAS 70.8L
• Mechanical resistance RMS 4.25N·s/m

Dimensions

• Nominal diameter 12″
• 315mm
• Overall diameter 315mm
• Baffle cutout diameter 280mm
• Overall depth 180mm
• Volume occupied by the driver (estimated) 3.6L
• Net weight 7.55kg
• Frame material Die Cast Aluminium