Beyma 12P80Nd V2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.8dB
• Frequency response 50 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 47Hz
• Mechanical quality factor QMS 5.20
• Electrical quality factor QES 0.20
• Total quality factor QTS 0.19

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 0.9mH
• VC Diameter 101.6mm
• Winding height HVC 20mm

Magnet

• Force factor Bl 23.7N/A
• Motor constant Bl/√RE 10.6N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 265mm
• Effective area SD 550cm²
• Moving mass MMS 74g
• Moving mass (without air load) MMD 65g

Suspensions

• Stiffness KMS 6.58N/mm
• Compliance CMS 152µm/N
• Equivalent volume to the compliance VAS 65L
• Mechanical resistance RMS 4.2N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 312mm
• Baffle cutout diameter 283mm
• Overall depth 132mm
• Volume occupied by the driver (estimated) 2.4L
• Net weight 5.6kg