Oberton 15XL400

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.7dB
• Frequency response 50 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48.8Hz
• Mechanical quality factor QMS 9.30
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 436cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.76mH
• VC Diameter 77mm
• Winding height HVC 15mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 1.33T
• Force factor Bl 18.9N/A
• Motor constant Bl/√RE 8N/√W
• Air gap height HAG 9mm
• Material Ferrite

Diaphragm

• Effective diameter 325mm
• Effective area SD 830cm²
• Moving mass MMS 73.1g
• Moving mass (without air load) MMD 56.2g
• Material Paper with glassfiber

Suspensions

• Stiffness KMS 6.85N/mm
• Compliance CMS 146µm/N
• Equivalent volume to the compliance VAS 140L
• Mechanical resistance RMS 2.41N·s/m

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Baffle cutout diameter 352mm
• Overall depth 163mm
• Volume occupied by the driver (estimated) 3.8L
• Net weight 7.5kg
• Frame material Die cast aluminium