Beyma 12P1000Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 47Hz
• Mechanical quality factor QMS 7.90
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 8mm
• Maximum excursion before damage xlim 52mm
• Air volume displaced at xmax VD 440cm³
• Power handling P 900W
• Program power Pmax 1800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 2mH
• VC Diameter 101.6mm
• Winding height HVC 21mm

Magnet

• Force factor Bl 23.5N/A
• Motor constant Bl/√RE 10.4N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 265mm
• Effective area SD 550cm²
• Moving mass MMS 100g
• Moving mass (without air load) MMD 91g

Suspensions

• Stiffness KMS 8.7N/mm
• Compliance CMS 115µm/N
• Equivalent volume to the compliance VAS 49L
• Mechanical resistance RMS 3.7N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 312mm
• Baffle cutout diameter 283mm
• Overall depth 131mm
• Volume occupied by the driver (estimated) 2.3L
• Net weight 5.4kg