BMS 5N155

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.2dB
• Frequency response 80 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 101Hz
• Mechanical quality factor QMS 4.17
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 43cm³
• Power handling P 130W
• Program power Pmax 260W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.7Ω
• Inductance (1kHz) LE 0.51mH
• VC Diameter 38mm
• Winding height HVC 15mm
• Winding material Copper

Magnet

• Force factor Bl 12N/A
• Motor constant Bl/√RE 3.52N/√W
• Air gap height HAG 5mm

Diaphragm

• Effective diameter 105mm
• Effective area SD 85cm²
• Moving mass MMS 9.6g
• Moving mass (without air load) MMD 9g

Suspensions

• Stiffness KMS 3.85N/mm
• Compliance CMS 260µm/N
• Equivalent volume to the compliance VAS 2.63L
• Mechanical resistance RMS 1.46N·s/m

Dimensions

• Nominal diameter 5″
• 135 x 135mm
• Overall size 135 x 135mm
• Baffle cutout diameter 117mm
• Overall depth 71mm
• Volume occupied by the driver (estimated) 0.28L
• Net weight 0.85kg
• Frame material Cast Aluminum