Oberton 10NMB500

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.2dB
• Frequency response 65 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 68.2Hz
• Mechanical quality factor QMS 11.80
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 8.3mm
• Air volume displaced at xmax VD 262cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 0.394mH
• VC Diameter 77mm
• Winding height HVC 20mm
• Winding material Aluminium
• Former material Glass fiber

Magnet

• Flux density B 1.2T
• Force factor Bl 14.6N/A
• Motor constant Bl/√RE 6.52N/√W
• Air gap height HAG 7mm
• Material Neodymium

Diaphragm

• Effective diameter 201mm
• Effective area SD 317cm²
• Moving mass MMS 41.9g
• Moving mass (without air load) MMD 37.6g
• Material Paper

Suspensions

• Stiffness KMS 7.69N/mm
• Compliance CMS 130µm/N
• Equivalent volume to the compliance VAS 18.6L
• Mechanical resistance RMS 1.52N·s/m

Dimensions

• Nominal diameter 10″
• 262mm
• Overall diameter 263mm
• Baffle cutout diameter 225mm
• Overall depth 148mm
• Volume occupied by the driver (estimated) 1.9L
• Net weight 4.25kg
• Frame material Die cast aluminium