VISATON FRS 8 - 4 Ohm

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.9dB
• Frequency response 100 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 120Hz
• Mechanical quality factor QMS 3.61
• Electrical quality factor QES 0.85
• Total quality factor QTS 0.69

Large signal parameters

• Maximum linear excursion xmax 0.5mm
• Maximum excursion before damage xlim 2.5mm
• Air volume displaced at xmax VD 1.6cm³
• Power handling P 30W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.4mH
• VC Diameter 20mm
• Winding height HVC 4.5mm

Magnet

• Flux density B 0.8T
• Force factor Bl 2.2N/A
• Motor constant Bl/√RE 1.18N/√W
• Air gap height HAG 4mm

Diaphragm

• Effective diameter 63mm
• Effective area SD 31cm²
• Moving mass MMS 2.5g
• Moving mass (without air load) MMD 2.4g

Suspensions

• Stiffness KMS 1.36N/mm
• Compliance CMS 734µm/N
• Equivalent volume to the compliance VAS 1L
• Mechanical resistance RMS 0.52N·s/m

Dimensions

• Nominal diameter 3.3″
• 80mm
• Baffle cutout diameter 73mm
• Volume occupied by the driver (estimated) 0.1L
• Net weight 0.28kg