Oberton 15XB1200

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.7dB
• Frequency response 39 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39.8Hz
• Mechanical quality factor QMS 7.84
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 996cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.36mH
• VC Diameter 100mm
• Winding height HVC 29mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.25T
• Force factor Bl 24N/A
• Motor constant Bl/√RE 10.5N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 325mm
• Effective area SD 830cm²
• Moving mass MMS 142g
• Moving mass (without air load) MMD 125g
• Material Paper with carbone fibers

Suspensions

• Stiffness KMS 8.86N/mm
• Compliance CMS 113µm/N
• Equivalent volume to the compliance VAS 109L
• Mechanical resistance RMS 4.52N·s/m

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 388mm
• Baffle cutout diameter 355mm
• Overall depth 187mm
• Volume occupied by the driver (estimated) 5.9L
• Net weight 12.82kg
• Frame material Die cast aluminium