Rockford Fosgate P1S4-10

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 3.00
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.52

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 333cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 2.81mH
• VC Diameter 51mm

Magnet

• Force factor Bl 12.3N/A
• Motor constant Bl/√RE 6.48N/√W
• Weight 1.28kg

Diaphragm

• Effective diameter 217mm
• Effective area SD 370cm²
• Moving mass MMS 137g
• Moving mass (without air load) MMD 132g

Suspensions

• Stiffness KMS 4.85N/mm
• Compliance CMS 206µm/N
• Equivalent volume to the compliance VAS 40L
• Mechanical resistance RMS 8.58N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Baffle cutout diameter 232mm
• Mounting depth 135mm
• Volume occupied by the driver 1.59L