Beyma 12P80Fe V2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.2dB
• Frequency response 50 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 48Hz
• Mechanical quality factor QMS 6.50
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.21

Large signal parameters

• Maximum linear excursion xmax 7.5mm
• Maximum excursion before damage xlim 52mm
• Air volume displaced at xmax VD 413cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.1mH
• VC Diameter 101.6mm
• Winding height HVC 20mm

Magnet

• Force factor Bl 23N/A
• Motor constant Bl/√RE 10.3N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 265mm
• Effective area SD 550cm²
• Moving mass MMS 76g
• Moving mass (without air load) MMD 67g

Suspensions

• Stiffness KMS 6.99N/mm
• Compliance CMS 143µm/N
• Equivalent volume to the compliance VAS 61L
• Mechanical resistance RMS 3.5N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 312mm
• Baffle cutout diameter 283mm
• Overall depth 135mm
• Volume occupied by the driver (estimated) 3.9L
• Net weight 11.5kg