Oberton 15MB700

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 45 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 44.2Hz
• Mechanical quality factor QMS 12.03
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 9.3mm
• Air volume displaced at xmax VD 767cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.92mH
• VC Diameter 100mm
• Winding height HVC 23mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.28T
• Force factor Bl 26.1N/A
• Motor constant Bl/√RE 11.2N/√W
• Air gap height HAG 9mm
• Material Ferrite

Diaphragm

• Effective diameter 325mm
• Effective area SD 830cm²
• Moving mass MMS 124g
• Moving mass (without air load) MMD 107g
• Material Kevlar paper + glassfiber

Suspensions

• Stiffness KMS 9.62N/mm
• Compliance CMS 104µm/N
• Equivalent volume to the compliance VAS 100L
• Mechanical resistance RMS 2.87N·s/m

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 388mm
• Baffle cutout diameter 355mm
• Overall depth 179mm
• Volume occupied by the driver (estimated) 5L
• Net weight 10.45kg
• Frame material Die cast aluminium