BMS 6C150

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.9dB
• Frequency response 80 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 88.3Hz
• Mechanical quality factor QMS 3.90
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 66cm³
• Power handling P 130W
• Program power Pmax 260W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.9Ω
• Inductance (1kHz) LE 0.68mH
• VC Diameter 38mm
• Winding height HVC 15mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 1.6T
• Force factor Bl 11.4N/A
• Motor constant Bl/√RE 3.29N/√W
• Air gap height HAG 5mm
• Material Neodymium

Diaphragm

• Effective diameter 129mm
• Effective area SD 132cm²
• Moving mass MMS 10g
• Moving mass (without air load) MMD 8.9g
• Material Polyester

Suspensions

• Stiffness KMS 3.23N/mm
• Compliance CMS 310µm/N
• Equivalent volume to the compliance VAS 7.6L
• Mechanical resistance RMS 1.42N·s/m

Dimensions

• Nominal diameter 6.5″
• 162 x 162mm
• Overall size 162 x 162mm
• Baffle cutout diameter 146mm
• Overall depth 109mm
• Volume occupied by the driver (estimated) 0.71L
• Net weight 1.95kg
• Frame material Cast Aluminum