PowerBass L-1504D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB
• Frequency response 27 - 450Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 27Hz
• Mechanical quality factor QMS 5.14
• Electrical quality factor QES 0.54
• Total quality factor QTS 0.47

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 936cm³
• 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, estimated) LE 5.8mH
• VC Diameter 64mm

Magnet

• Force factor (in series) Bl 22.6N/A
• Motor constant Bl/√RE 8.93N/√W
• Weight 6.58kg

Diaphragm

• Effective diameter 315mm
• Effective area SD 780cm²
• Moving mass MMS 264g
• Moving mass (without air load) MMD 248g
• Material Injection molded Polypropylene

Suspensions

• Stiffness KMS 7.28N/mm
• Compliance CMS 137µm/N
• Equivalent volume to the compliance VAS 111L
• Mechanical resistance RMS 8.7N·s/m

Dimensions

• Nominal diameter 15″
• 381mm
• Baffle cutout diameter 355mm
• Mounting depth 165mm
• Volume occupied by the driver (estimated) 4.3L