Oberton 15CX

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 50 - 16000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38.2Hz
• Mechanical quality factor QMS 5.61
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 580cm³
• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 0.69mH
• VC Diameter 77mm
• Winding height HVC 18.5mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.15T
• Force factor Bl 18.5N/A
• Motor constant Bl/√RE 8.11N/√W
• Air gap height HAG 9mm
• Material Ferrite

Diaphragm

• Effective diameter 325mm
• Effective area SD 829cm²
• Moving mass MMS 102g
• Moving mass (without air load) MMD 85g
• Material Paper with glassfiber

Suspensions

• Stiffness KMS 5.88N/mm
• Compliance CMS 170µm/N
• Equivalent volume to the compliance VAS 164L
• Mechanical resistance RMS 4.36N·s/m

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Baffle cutout diameter 355mm
• Overall depth 214mm
• Volume occupied by the driver (estimated) 5.8L
• Net weight 10.9kg
• Frame material Die Cast Aluminium