Beyma 12SW1300Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.6dB
• Frequency response 25 - 1800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 12.07
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 10mm
• Maximum excursion before damage xlim 30mm
• Air volume displaced at xmax VD 550cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 4.9Ω
• Inductance (1kHz) LE 3.25mH
• VC Diameter 100mm
• Winding height HVC 25mm

Magnet

• Force factor Bl 25.3N/A
• Motor constant Bl/√RE 11.4N/√W
• Air gap height HAG 14mm
• Material Neodymium

Diaphragm

• Effective diameter 265mm
• Effective area SD 550cm²
• Moving mass MMS 118g
• Moving mass (without air load) MMD 109g

Suspensions

• Stiffness KMS 9.48N/mm
• Compliance CMS 106µm/N
• Equivalent volume to the compliance VAS 45L
• Mechanical resistance RMS 2.77N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Volume occupied by the driver (estimated) 3.2L
• Net weight 7.2kg