Oberton 18XB1300

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35.2Hz
• Mechanical quality factor QMS 9.56
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 1390cm³
• Power handling P 1300W
• Program power Pmax 2600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.92mH
• VC Diameter 100mm
• Winding height HVC 31mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1T
• Force factor Bl 28.3N/A
• Motor constant Bl/√RE 12.4N/√W
• Air gap height HAG 14mm
• Material Ferrite

Diaphragm

• Effective diameter 384mm
• Effective area SD 1158cm²
• Moving mass MMS 206g
• Moving mass (without air load) MMD 178g
• Material Carbone paper

Suspensions

• Stiffness KMS 10.1N/mm
• Compliance CMS 99.3µm/N
• Equivalent volume to the compliance VAS 171L
• Mechanical resistance RMS 4.77N·s/m

Dimensions

• Nominal diameter 18″
• 461mm
• Overall diameter 461mm
• Baffle cutout diameter 417mm
• Overall depth 205mm
• Volume occupied by the driver (estimated) 7L
• Net weight 12.9kg
• Frame material Die cast aluminium