Beyma 6P200Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.4dB
• Frequency response 60 - 9000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 3.70
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 74cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 0.6mH
• VC Diameter 50.8mm
• Winding height HVC 14mm

Magnet

• Force factor Bl 10.5N/A
• Motor constant Bl/√RE 4.56N/√W
• Air gap height HAG 7mm

Diaphragm

• Effective diameter 131mm
• Effective area SD 135cm²
• Moving mass MMS 17g
• Moving mass (without air load) MMD 15.7g

Suspensions

• Stiffness KMS 2.14N/mm
• Compliance CMS 468µm/N
• Equivalent volume to the compliance VAS 11.9L
• Mechanical resistance RMS 1.6N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 188mm
• Baffle cutout diameter 145mm
• Overall depth 90mm
• Volume occupied by the driver (estimated) 0.68L
• Net weight 1.9kg