Rockford Fosgate P3D4-10

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.63
• Total quality factor QTS 0.56

Large signal parameters

• Maximum linear excursion xmax 15.9mm
• Air volume displaced at xmax VD 572cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.4Ω
• Inductance (1kHz, in series) LE 7mH
• VC Diameter 64mm

Magnet

• Force factor (in series) Bl 19.8N/A
• Motor constant Bl/√RE 7.83N/√W
• Weight 2.3kg

Diaphragm

• Effective diameter 214mm
• Effective area SD 360cm²
• Moving mass MMS 220g
• Moving mass (without air load) MMD 215g

Suspensions

• Stiffness KMS 6.8N/mm
• Compliance CMS 147µm/N
• Equivalent volume to the compliance VAS 27L
• Mechanical resistance RMS 7.73N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Baffle cutout diameter 232mm
• Mounting depth 157mm
• Volume occupied by the driver 1.98L