RCF L15P540

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.3dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50Hz
• Mechanical quality factor QMS 9.70
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 7mm
• Maximum excursion before damage xlim 18mm
• Air volume displaced at xmax VD 630cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.5mH
• VC Diameter 76mm
• Winding height HVC 18mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 21.4N/A
• Motor constant Bl/√RE 9.04N/√W
• Air gap height HAG 10mm

Diaphragm

• Effective diameter 330mm
• Effective area SD 900cm²
• Moving mass MMS 106g
• Moving mass (without air load) MMD 87.7g

Suspensions

• Stiffness KMS 10.5N/mm
• Compliance CMS 95µm/N
• Equivalent volume to the compliance VAS 100L
• Mechanical resistance RMS 3.43N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 387mm
• Baffle cutout diameter 360mm
• Overall depth 184mm
• Volume occupied by the driver 3.8L
• Net weight 8.8kg