Eighteen Sound 15NLW9300

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 6.70
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 680cm³
• Power handling P 800W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 0.95mH
• VC Diameter 100mm
• Winding material Aluminum

Magnet

• Force factor Bl 24.4N/A
• Motor constant Bl/√RE 9.96N/√W
• Material Neodymium

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 107g
• Moving mass (without air load) MMD 89.7g
• Material Weather protected

Suspensions

• Stiffness KMS 6.41N/mm
• Compliance CMS 156µm/N
• Equivalent volume to the compliance VAS 170L
• Mechanical resistance RMS 3.91N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 353mm
• Overall depth 174mm
• Flange thickness 19mm
• Mounting depth 155mm
• Volume occupied by the driver (estimated) 3.8L
• Net weight 6.8kg