Oberton 18NXB1600

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 30 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 32.4Hz
• Mechanical quality factor QMS 5.11
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 13.5mm
• Air volume displaced at xmax VD 1563cm³
• Power handling P 1600W
• Program power Pmax 3200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 115mm
• Winding height HVC 34mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 29.6N/A
• Motor constant Bl/√RE 12.8N/√W
• Air gap height HAG 14mm
• Material Neodymium

Diaphragm

• Effective diameter 384mm
• Effective area SD 1158cm²
• Moving mass MMS 262g
• Moving mass (without air load) MMD 234g
• Material Kevlar paper

Suspensions

• Stiffness KMS 10.8N/mm
• Compliance CMS 92.4µm/N
• Equivalent volume to the compliance VAS 173L
• Mechanical resistance RMS 10.4N·s/m

Dimensions

• Nominal diameter 18″
• 461mm
• Overall diameter 461mm
• Baffle cutout diameter 417mm
• Overall depth 224mm
• Volume occupied by the driver (estimated) 7L
• Net weight 11.7kg
• Frame material Die cast aluminium