RCF CX12N251

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.8dB
• Frequency response 50 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 60Hz
• Mechanical quality factor QMS 5.40
• Electrical quality factor QES 0.28
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 15mm
• Air volume displaced at xmax VD 250cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 63mm
• Winding height HVC 14mm
• Winding material Aluminium
• Former material Glass Fiber

Magnet

• Force factor Bl 17.5N/A
• Motor constant Bl/√RE 7.67N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 260mm
• Effective area SD 500cm²
• Moving mass MMS 41g
• Moving mass (without air load) MMD 32.7g

Suspensions

• Stiffness KMS 6.21N/mm
• Compliance CMS 161µm/N
• Equivalent volume to the compliance VAS 62L
• Mechanical resistance RMS 2.86N·s/m

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 320mm
• Baffle cutout diameter 288mm
• Overall depth 165mm
• Volume occupied by the driver 2.4L
• Net weight 3.6kg