Eighteen Sound 15MB1000

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
• Frequency response 45 - 5100Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 6.00
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 510cm³
• Power handling P 850W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 1.5mH
• VC Diameter 100mm
• Winding material Aluminum

Magnet

• Force factor Bl 21N/A
• Motor constant Bl/√RE 8.95N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 85g
• Moving mass (without air load) MMD 67.7g
• Material Weather protected

Suspensions

• Stiffness KMS 7.75N/mm
• Compliance CMS 129µm/N
• Equivalent volume to the compliance VAS 133L
• Mechanical resistance RMS 4.27N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 353mm
• Overall depth 156mm
• Flange thickness 19mm
• Mounting depth 137mm
• Volume occupied by the driver (estimated) 4.9L
• Net weight 11.4kg