Oberton 8CX

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
• Frequency response 70 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 76.1Hz
• Mechanical quality factor QMS 4.28
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 106cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.7Ω
• Inductance (1kHz) LE 0.638mH
• VC Diameter 51mm
• Winding height HVC 14mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 0.91T
• Force factor Bl 9.43N/A
• Motor constant Bl/√RE 3.96N/√W
• Air gap height HAG 7mm
• Material Ferrite

Diaphragm

• Effective diameter 160mm
• Effective area SD 202cm²
• Moving mass MMS 14.5g
• Moving mass (without air load) MMD 12.2g
• Material Paper with carbon fibers

Suspensions

• Stiffness KMS 3.32N/mm
• Compliance CMS 301µm/N
• Equivalent volume to the compliance VAS 16.8L
• Mechanical resistance RMS 1.62N·s/m

Dimensions

• Nominal diameter 8″
• 210mm
• Overall diameter 225mm
• Baffle cutout diameter 187mm
• Overall depth 121mm
• Volume occupied by the driver (estimated) 1.6L
• Net weight 4.5kg
• Frame material Die Cast Aluminium