RCF LF18N451

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 30 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 31Hz
• Mechanical quality factor QMS 6.00
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 9mm
• Maximum excursion before damage xlim 30mm
• Air volume displaced at xmax VD 1080cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 2.6mH
• VC Diameter 114mm
• Winding height HVC 26mm
• Winding material Copper

Magnet

• Force factor Bl 30.2N/A
• Motor constant Bl/√RE 13.5N/√W
• Air gap height HAG 15mm

Diaphragm

• Effective diameter 395mm
• Effective area SD 1200cm²
• Moving mass MMS 235g
• Moving mass (without air load) MMD 206g

Suspensions

• Stiffness KMS 8.85N/mm
• Compliance CMS 113µm/N
• Equivalent volume to the compliance VAS 245L
• Mechanical resistance RMS 7.63N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 465mm
• Baffle cutout diameter 425mm
• Overall depth 223mm
• Volume occupied by the driver 5.5L
• Net weight 10.5kg