BMS 15N850v²

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.5dB
• Frequency response 20 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37Hz
• Mechanical quality factor QMS 7.38
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 1014cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.43mH
• VC Diameter 101.6mm
• Winding height HVC 36mm
• Winding material Copper

Magnet

• Force factor Bl 25.2N/A
• Motor constant Bl/√RE 10.6N/√W
• Air gap height HAG 12mm
• Material Neodymium

Diaphragm

• Effective diameter 328mm
• Effective area SD 845cm²
• Moving mass MMS 167g
• Moving mass (without air load) MMD 150g

Suspensions

• Stiffness KMS 5.88N/mm
• Compliance CMS 170µm/N
• Equivalent volume to the compliance VAS 111L
• Mechanical resistance RMS 5.26N·s/m

Dimensions

• Nominal diameter 15″
• 388mm
• Overall diameter 388mm
• Baffle cutout diameter 357mm
• Overall depth 200mm
• Volume occupied by the driver (estimated) 4.8L
• Net weight 8.55kg
• Frame material Cast Aluminum