Eighteen Sound 15MB606

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.2dB
• Frequency response 45 - 4800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 43Hz
• Mechanical quality factor QMS 6.20
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 383cm³
• Power handling P 400W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.3mH
• VC Diameter 75mm
• Winding material Aluminum

Magnet

• Force factor Bl 15.1N/A
• Motor constant Bl/√RE 6.75N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 63g
• Moving mass (without air load) MMD 45.7g
• Material Weather protected

Suspensions

• Stiffness KMS 4.61N/mm
• Compliance CMS 217µm/N
• Equivalent volume to the compliance VAS 223L
• Mechanical resistance RMS 2.75N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 353mm
• Overall depth 171mm
• Flange thickness 19mm
• Mounting depth 152mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 6.7kg