Beyma 6CMV2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.7dB
• Frequency response 95 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 90Hz
• Mechanical quality factor QMS 1.40
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 5.7mm
• Maximum excursion before damage xlim 30mm
• Air volume displaced at xmax VD 80cm³
• Power handling P 220W
• Program power Pmax 440W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 0.5mH
• VC Diameter 38.1mm
• Winding height HVC 14mm

Magnet

• Force factor Bl 9.4N/A
• Motor constant Bl/√RE 4.08N/√W
• Air gap height HAG 6mm

Diaphragm

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

Suspensions

• Stiffness KMS 4.26N/mm
• Compliance CMS 235µm/N
• Equivalent volume to the compliance VAS 6.5L
• Mechanical resistance RMS 5.5N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 167mm
• Baffle cutout diameter 141mm
• Overall depth 80mm
• Volume occupied by the driver (estimated) 0.64L
• Net weight 2.2kg