Oberton 15B450

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 45 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45.1Hz
• Mechanical quality factor QMS 9.60
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 6.8mm
• Air volume displaced at xmax VD 560cm³
• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 1.08mH
• VC Diameter 77mm
• Winding height HVC 18mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.33T
• Force factor Bl 20.4N/A
• Motor constant Bl/√RE 8.86N/√W
• Air gap height HAG 9mm
• Material Ferrite

Diaphragm

• Effective diameter 325mm
• Effective area SD 830cm²
• Moving mass MMS 81.6g
• Moving mass (without air load) MMD 64.7g
• Material Paper with glassfiber

Suspensions

• Stiffness KMS 6.54N/mm
• Compliance CMS 153µm/N
• Equivalent volume to the compliance VAS 147L
• 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