Oberton 6NMB200V

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
• Frequency response 200 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 79Hz
• Mechanical quality factor QMS 5.82
• Electrical quality factor QES 0.28
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 63cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 10.7Ω
• Inductance (1kHz) LE 0.383mH
• VC Diameter 51mm
• Winding height HVC 12.5mm
• Winding material Aluminium
• Former material Glass fiber

Magnet

• Flux density B 1.37T
• Force factor Bl 15.2N/A
• Motor constant Bl/√RE 4.65N/√W
• Air gap height HAG 7mm
• Material Neodymium

Diaphragm

• Effective diameter 133mm
• Effective area SD 139cm²
• Moving mass MMS 12.2g
• Moving mass (without air load) MMD 10.9g
• Material Paper with carbon fibers

Suspensions

• Stiffness KMS 3N/mm
• Compliance CMS 333µm/N
• Equivalent volume to the compliance VAS 9.53L
• Mechanical resistance RMS 1.04N·s/m

Dimensions

• Nominal diameter 6.5″
• 170mm
• Overall diameter 185mm
• Baffle cutout diameter 145mm
• Overall depth 82mm
• Volume occupied by the driver (estimated) 0.56L
• Net weight 1.55kg
• Frame material Die cast aluminium