Rockford Fosgate P2D2-15

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 20Hz
• Mechanical quality factor QMS 6.40
• Electrical quality factor QES 0.69
• Total quality factor QTS 0.62

Large signal parameters

• Maximum linear excursion xmax 13.3mm
• Air volume displaced at xmax VD 1189cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.3Ω
• Inductance (1kHz, in series) LE 3.4mH
• VC Diameter 57mm

Magnet

• Force factor (in series) Bl 14N/A
• Motor constant Bl/√RE 7.71N/√W
• Weight 2.06kg

Diaphragm

• Effective diameter 337mm
• Effective area SD 894cm²
• Moving mass MMS 326g
• Moving mass (without air load) MMD 309g

Suspensions

• Stiffness KMS 5.16N/mm
• Compliance CMS 194µm/N
• Equivalent volume to the compliance VAS 220L
• Mechanical resistance RMS 6.41N·s/m

Dimensions

• Nominal diameter 15″
• 381mm
• Baffle cutout diameter 353mm
• Mounting depth 187mm
• Volume occupied by the driver 3.79L