RCF MB12Y358

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
• Frequency response 45 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 55Hz
• Mechanical quality factor QMS 4.50
• Electrical quality factor QES 0.21
• Total quality factor QTS 0.20

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 19.5mm
• Air volume displaced at xmax VD 300cm³
• Power handling P 650W
• Program power Pmax 1300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.65mH
• VC Diameter 89mm
• Winding height HVC 17mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 22.5N/A
• Motor constant Bl/√RE 9.51N/√W
• Air gap height HAG 11mm

Diaphragm

• Effective diameter 260mm
• Effective area SD 500cm²
• Moving mass MMS 54g
• Moving mass (without air load) MMD 45.7g

Suspensions

• Stiffness KMS 6.58N/mm
• Compliance CMS 152µm/N
• Equivalent volume to the compliance VAS 61L
• Mechanical resistance RMS 4.15N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 320mm
• Baffle cutout diameter 284mm
• Volume occupied by the driver 2.2L
• Net weight 4.5kg