Beyma 6G40Fe

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.8dB
• Frequency response 70 - 9000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 102Hz
• Mechanical quality factor QMS 9.25
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 3.1mm
• Maximum excursion before damage xlim 18.9mm
• Air volume displaced at xmax VD 43cm³
• Power handling P 170W
• Program power Pmax 340W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 0.5mH
• VC Diameter 51.7mm
• Winding height HVC 9.2mm

Magnet

• Force factor Bl 11N/A
• Motor constant Bl/√RE 4.49N/√W
• Air gap height HAG 7mm
• Material Ferrite

Diaphragm

• Effective diameter 134mm
• Effective area SD 140cm²
• Moving mass MMS 13g
• Moving mass (without air load) MMD 11.8g

Suspensions

• Stiffness KMS 5.44N/mm
• Compliance CMS 184µm/N
• Equivalent volume to the compliance VAS 5.04L
• Mechanical resistance RMS 0.91N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 1.3L
• Net weight 3.02kg