Rockford Fosgate R2SD2-10

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 38.1Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.74
• Total quality factor QTS 0.68

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 266cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.8Ω
• Inductance (1kHz, in series) LE 4.2mH
• VC Diameter 51mm

Magnet

• Force factor (in series) Bl 12.8N/A
• Motor constant Bl/√RE 6.57N/√W
• Weight 1.28kg

Diaphragm

• Effective diameter 206mm
• Effective area SD 333cm²
• Moving mass MMS 134g
• Moving mass (without air load) MMD 130g

Suspensions

• Stiffness KMS 7.69N/mm
• Compliance CMS 130µm/N
• Equivalent volume to the compliance VAS 20.4L
• Mechanical resistance RMS 4.02N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Baffle cutout diameter 232mm
• Mounting depth 86mm
• Volume occupied by the driver 1.05L