B&C Speaker 6MD38

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.1dB
• Frequency response 130 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 130Hz
• Mechanical quality factor QMS 3.70
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 26cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.7Ω
• Inductance (1kHz) LE 0.25mH
• VC Diameter 38mm
• Winding height HVC 9mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.4T
• Force factor Bl 10.5N/A
• Motor constant Bl/√RE 4.4N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 130mm
• Effective area SD 132cm²
• Moving mass MMS 12g
• Moving mass (without air load) MMD 10.8g

Suspensions

• Stiffness KMS 7.75N/mm
• Compliance CMS 129µm/N
• Equivalent volume to the compliance VAS 3L
• Mechanical resistance RMS 2.65N·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