B&C Speaker 6MD38

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
• Frequency response 150 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 150Hz
• Mechanical quality factor QMS 2.80
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.50

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 46cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 16Ω
• DC resistance RE 11.7Ω
• Inductance (1kHz) LE 0.4mH
• VC Diameter 38mm
• Winding height HVC 9mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.4T
• Force factor Bl 14.5N/A
• Motor constant Bl/√RE 4.24N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 130mm
• Effective area SD 132cm²
• Moving mass MMS 11g
• Moving mass (without air load) MMD 9.8g

Suspensions

• Stiffness KMS 10.3N/mm
• Compliance CMS 97µm/N
• Equivalent volume to the compliance VAS 2.3L
• Mechanical resistance RMS 3.7N·s/m

Dimensions

• Nominal diameter 6.5″
• 170mm
• Overall diameter 187mm
• Baffle cutout diameter 145mm
• Overall depth 82mm
• Flange thickness 9mm
• Mounting depth 73mm
• Volume occupied by the driver 0.8L
• Net weight 2.3kg