Peerless FSL-1220R02-08

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 62Hz
• Mechanical quality factor QMS 8.67
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.55

Large signal parameters

• Maximum linear excursion xmax 5.1mm
• Air volume displaced at xmax VD 275cm³
• Power handling P 167W
• Program power Pmax 334W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.696mH
• VC Diameter 50.5mm

Magnet

• Force factor Bl 13.3N/A
• Motor constant Bl/√RE 5.48N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 263mm
• Effective area SD 543cm²
• Moving mass MMS 45.3g
• Moving mass (without air load) MMD 36.6g
• Material Paper

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 61.1L
• Mechanical resistance RMS 2.04N·s/m
• Surround material Fabric

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 2.1L
• Net weight 4.9kg
• Frame material Pressed Steel