Fi Car Audio SSD15 D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.7dB

Thiele & Small parameters

• Resonance frequency (free air) fS 38.3Hz
• Mechanical quality factor QMS 6.05
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 22mm
• Air volume displaced at xmax VD 1782cm³
• Power handling P 1250W
• Program power Pmax 2500W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.0Ω
• Inductance (1kHz, in series, estimated) LE 1.5mH

Magnet

• Force factor (in series) Bl 24.3N/A
• Motor constant Bl/√RE 14N/√W

Diaphragm

• Effective diameter 321mm
• Effective area SD 810cm²
• Moving mass MMS 351g
• Moving mass (without air load) MMD 334g

Suspensions

• Stiffness KMS 21.7N/mm
• Compliance CMS 46µm/N
• Equivalent volume to the compliance VAS 43.1L
• Mechanical resistance RMS 14N·s/m

Dimensions

• Nominal diameter 15″
• 397mm
• Overall diameter 397mm
• Baffle cutout diameter 359mm
• Mounting depth 203mm
• Volume occupied by the driver 4.81L