VISATON SL 87 FE - 8 Ohm

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.6dB
• Frequency response 75 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 120Hz
• Mechanical quality factor QMS 3.30
• Electrical quality factor QES 0.82
• Total quality factor QTS 0.65

Large signal parameters

• Maximum linear excursion xmax 1.8mm
• Air volume displaced at xmax VD 6.7cm³
• Power handling P 10W
• Program power Pmax 15W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.2Ω
• Inductance (1kHz, estimated) LE 0.29mH
• VC Diameter 20mm
• Winding height HVC 6mm

Magnet

• Force factor Bl 3.95N/A
• Motor constant Bl/√RE 1.47N/√W
• Air gap height HAG 2.5mm

Diaphragm

• Effective diameter 69mm
• Effective area SD 37.3cm²
• Moving mass MMS 2.4g
• Moving mass (without air load) MMD 2.2g

Suspensions

• Stiffness KMS 1.29N/mm
• Compliance CMS 775µm/N
• Equivalent volume to the compliance VAS 1.53L
• Mechanical resistance RMS 0.55N·s/m

Dimensions

• Nominal diameter 3.4″
• 85mm
• Baffle cutout diameter 80mm
• Volume occupied by the driver (estimated) 0.18L
• Net weight 0.486kg