Eighteen Sound 15MB700

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.5dB
• Frequency response 45 - 4300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 4.60
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 468cm³
• Power handling P 400W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 75mm
• Winding material Aluminum

Magnet

• Force factor Bl 17.6N/A
• Motor constant Bl/√RE 7.87N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 73g
• Moving mass (without air load) MMD 55.7g
• Material Weather protected

Suspensions

• Stiffness KMS 5.08N/mm
• Compliance CMS 197µm/N
• Equivalent volume to the compliance VAS 202L
• Mechanical resistance RMS 4.19N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 353mm
• Overall depth 167mm
• Flange thickness 19mm
• Mounting depth 148mm
• Volume occupied by the driver (estimated) 4.2L
• Net weight 8.3kg