RCF LF12X401

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
• Frequency response 45 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.28
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 9mm
• Maximum excursion before damage xlim 30mm
• Air volume displaced at xmax VD 450cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 102mm
• Winding height HVC 25mm
• Winding material Copper

Magnet

• Force factor Bl 26.1N/A
• Motor constant Bl/√RE 11.4N/√W
• Material Ceramic

Diaphragm

• Effective diameter 260mm
• Effective area SD 500cm²
• Moving mass MMS 105g
• Moving mass (without air load) MMD 96.7g

Suspensions

• Stiffness KMS 7.09N/mm
• Compliance CMS 141µm/N
• Equivalent volume to the compliance VAS 50L
• Mechanical resistance RMS 3.71N·s/m
• Surround material Polycotton

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Overall depth 134mm
• Flange thickness 15mm
• Mounting depth 119mm
• Volume occupied by the driver 2.9L
• Net weight 11.37kg