Beyma 12XA30Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 40 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.21

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 28mm
• Air volume displaced at xmax VD 318cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz) LE 1.3mH
• VC Diameter 101.6mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 18.2N/A
• Motor constant Bl/√RE 6.98N/√W
• Air gap height HAG 9mm

Diaphragm

• Effective diameter 260mm
• Effective area SD 530cm²
• Moving mass MMS 47g
• Moving mass (without air load) MMD 38.3g

Suspensions

• Stiffness KMS 2.33N/mm
• Compliance CMS 430µm/N
• Equivalent volume to the compliance VAS 172L
• Mechanical resistance RMS 1.4N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 312mm
• Baffle cutout diameter 283mm
• Overall depth 152mm
• Volume occupied by the driver (estimated) 2.9L
• Net weight 6.3kg