RCF LF15Y408

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
• Frequency response 30 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 6.20
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 9mm
• Maximum excursion before damage xlim 750mm
• Air volume displaced at xmax VD 810cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 4.8Ω
• Inductance (1kHz) LE 2.5mH
• VC Diameter 102mm
• Winding height HVC 23mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 24.6N/A
• Motor constant Bl/√RE 11.2N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 35mm
• Effective area SD 900cm²
• Moving mass MMS 150g
• Moving mass (without air load) MMD 131g

Suspensions

• Stiffness KMS 7.69N/mm
• Compliance CMS 130µm/N
• Equivalent volume to the compliance VAS 150L
• Mechanical resistance RMS 5.47N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 393mm
• Baffle cutout diameter 360mm
• Volume occupied by the driver 4.3L
• Net weight 13.0kg