Beyma 12GA50

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.4dB
• Frequency response 100 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 90Hz
• Mechanical quality factor QMS 14.80
• Electrical quality factor QES 1.26
• Total quality factor QTS 1.16

Large signal parameters

• Maximum linear excursion xmax 3mm
• Maximum excursion before damage xlim 24mm
• Air volume displaced at xmax VD 159cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.6mH
• VC Diameter 50.8mm
• Winding height HVC 9mm

Magnet

• Force factor Bl 10N/A
• Motor constant Bl/√RE 4.02N/√W
• Air gap height HAG 7mm

Diaphragm

• Effective diameter 260mm
• Effective area SD 530cm²
• Moving mass MMS 34g
• Moving mass (without air load) MMD 25.3g

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 34L
• Mechanical resistance RMS 1.3N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 312mm
• Baffle cutout diameter 278mm
• Overall depth 139mm
• Volume occupied by the driver (estimated) 1.8L
• Net weight 3.5kg