VISATON FR 12 - 4 Ohm

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.1dB
• Frequency response 70 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 110Hz
• Mechanical quality factor QMS 5.61
• Electrical quality factor QES 2.80
• Total quality factor QTS 1.87

Large signal parameters

• Maximum linear excursion xmax 0.8mm
• Maximum excursion before damage xlim 2.5mm
• Air volume displaced at xmax VD 7cm³
• Power handling P 15W
• Program power Pmax 40W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.1mH
• VC Diameter 20mm
• Winding height HVC 4.5mm

Magnet

• Flux density B 0.8T
• Force factor Bl 1.7N/A
• Motor constant Bl/√RE 0.92N/√W
• Air gap height HAG 3mm

Diaphragm

• Effective diameter 105mm
• Effective area SD 87cm²
• Moving mass MMS 3.8g
• Moving mass (without air load) MMD 3.2g

Suspensions

• Stiffness KMS 1.24N/mm
• Compliance CMS 810µm/N
• Equivalent volume to the compliance VAS 8.7L
• Mechanical resistance RMS 0.47N·s/m

Dimensions

• Nominal diameter 5″
• 130mm
• Baffle cutout diameter 114mm
• Volume occupied by the driver (estimated) 0.1L
• Net weight 0.284kg