RCF L18P300

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33Hz
• Mechanical quality factor QMS 8.30
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 8mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 880cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.8mH
• VC Diameter 102mm
• Winding height HVC 23mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 23.5N/A
• Motor constant Bl/√RE 10.5N/√W
• Air gap height HAG 15mm

Diaphragm

• Effective diameter 380mm
• Effective area SD 1100cm²
• Moving mass MMS 180g
• Moving mass (without air load) MMD 154g

Suspensions

• Stiffness KMS 7.81N/mm
• Compliance CMS 128µm/N
• Equivalent volume to the compliance VAS 226L
• Mechanical resistance RMS 4.5N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 460mm
• Baffle cutout diameter 418mm
• Overall depth 202mm
• Volume occupied by the driver 6.5L
• Net weight 13.0kg