Fi Car Audio BL15 D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 33.6Hz
• Mechanical quality factor QMS 5.21
• Electrical quality factor QES 0.28
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 18mm
• Air volume displaced at xmax VD 1458cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 2.8Ω
• Inductance (1kHz, in series, estimated) LE 2.52mH

Magnet

• Force factor (in series) Bl 22.7N/A
• Motor constant Bl/√RE 13.6N/√W

Diaphragm

• Effective diameter 321mm
• Effective area SD 810cm²
• Moving mass MMS 261g
• Moving mass (without air load) MMD 244g

Suspensions

• Stiffness KMS 11.6N/mm
• Compliance CMS 86µm/N
• Equivalent volume to the compliance VAS 78.9L
• Mechanical resistance RMS 10.6N·s/m

Dimensions

• Nominal diameter 15″
• 397mm
• Overall diameter 397mm
• Baffle cutout diameter 359mm
• Mounting depth 210mm
• Volume occupied by the driver 5.95L