BMS 6S117

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.8dB
• Frequency response 80 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 80Hz
• Mechanical quality factor QMS 3.30
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 72cm³
• Power handling P 130W
• Program power Pmax 260W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.4Ω
• Inductance (1kHz) LE 0.64mH
• VC Diameter 38mm
• Winding height HVC 15mm
• Winding material Copper

Magnet

• Force factor Bl 11.3N/A
• Motor constant Bl/√RE 3.35N/√W
• Air gap height HAG 5mm
• Material Ferrite

Diaphragm

• Effective diameter 135mm
• Effective area SD 143cm²
• Moving mass MMS 11g
• Moving mass (without air load) MMD 9.8g

Suspensions

• Stiffness KMS 2.78N/mm
• Compliance CMS 360µm/N
• Equivalent volume to the compliance VAS 10.4L
• Mechanical resistance RMS 1.68N·s/m

Dimensions

• Nominal diameter 6.5″
• 162mm
• Overall diameter 162mm
• Baffle cutout diameter 146mm
• Overall depth 82mm
• Volume occupied by the driver (estimated) 0.52L
• Net weight 1.61kg
• Frame material Cast Aluminum