B&C Speaker 8MDN51

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94dB
• Frequency response 70 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 68Hz
• Mechanical quality factor QMS 5.20
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 132cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 10.0Ω
• Inductance (1kHz) LE 1.25mH
• VC Diameter 51mm
• Winding height HVC 16mm
• Winding material Aluminium
• Former material Kapton

Magnet

• Flux density B 1.45T
• Force factor Bl 17.8N/A
• Motor constant Bl/√RE 5.63N/√W
• Air gap height HAG 8mm
• Material Neodymium Ring

Diaphragm

• Effective diameter 167mm
• Effective area SD 220cm²
• Moving mass MMS 22g
• Moving mass (without air load) MMD 19.5g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 3.92N/mm
• Compliance CMS 255µm/N
• Equivalent volume to the compliance VAS 17.5L
• Mechanical resistance RMS 1.81N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall diameter 225mm
• Baffle cutout diameter 187mm
• Overall depth 95mm
• Flange thickness 11mm
• Mounting depth 84mm
• Volume occupied by the driver 1.1L
• Net weight 2.6kg