BMS 5CN140

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.5dB
• Frequency response 80 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 138Hz
• Mechanical quality factor QMS 3.40
• Electrical quality factor QES 0.87
• Total quality factor QTS 0.69

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 26cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 12.2Ω
• Inductance (1kHz) LE 0.45mH
• VC Diameter 38mm
• Winding height HVC 12mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 2T
• Force factor Bl 10.7N/A
• Motor constant Bl/√RE 3.06N/√W
• Air gap height HAG 5mm
• Material Neodymium

Diaphragm

• Effective diameter 97mm
• Effective area SD 74cm²
• Moving mass MMS 9g
• Moving mass (without air load) MMD 8.5g
• Material Polyester

Suspensions

• Stiffness KMS 7.14N/mm
• Compliance CMS 140µm/N
• Equivalent volume to the compliance VAS 1.03L
• Mechanical resistance RMS 2.3N·s/m

Dimensions

• Nominal diameter 5″
• 135 x 135mm
• Overall size 135 x 135mm
• Baffle cutout diameter 117mm
• Overall depth 82mm
• Volume occupied by the driver (estimated) 0.34L
• Net weight 0.98kg
• Frame material Cast Aluminum