Oberton 15NXB1200

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.5dB
• Frequency response 38 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38.5Hz
• Mechanical quality factor QMS 8.26
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.32

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 5.3Ω
• Inductance (1kHz) LE 0.713mH
• VC Diameter 100mm
• Winding height HVC 29mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.27T
• Force factor Bl 23.6N/A
• Motor constant Bl/√RE 10.3N/√W
• Air gap height HAG 10mm
• Material Neodymium

Diaphragm

• Effective diameter 325mm
• Effective area SD 830cm²
• Moving mass MMS 147g
• Moving mass (without air load) MMD 130g
• Material Paper with carbone fibers

Suspensions

• Stiffness KMS 8.55N/mm
• Compliance CMS 117µm/N
• Equivalent volume to the compliance VAS 112L
• Mechanical resistance RMS 4.3N·s/m

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Baffle cutout diameter 355mm
• Overall depth 204mm
• Volume occupied by the driver (estimated) 4.9L
• Net weight 8.82kg
• Frame material Die Cast Aluminium