RCF L18S801

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.8dB
• Frequency response 38 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 8.30
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 7mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 770cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 4.9Ω
• Inductance (1kHz) LE 1.7mH
• VC Diameter 102mm
• Winding height HVC 19mm
• Winding material Copper

Magnet

• Force factor Bl 24.5N/A
• Motor constant Bl/√RE 11.1N/√W
• Material Ceramic

Diaphragm

• Effective diameter 380mm
• Effective area SD 1100cm²
• Moving mass MMS 148g
• Moving mass (without air load) MMD 122g

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 206L
• Mechanical resistance RMS 4.37N·s/m
• Surround material Polycotton

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 460mm
• Baffle cutout diameter 418mm
• Overall depth 202mm
• Flange thickness 10mm
• Mounting depth 192mm
• Volume occupied by the driver 6.5L
• Net weight 12.0kg