RCF MB15X351

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
• Frequency response 40 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 46Hz
• Mechanical quality factor QMS 6.70
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 7mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 630cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.9mH
• VC Diameter 89mm
• Winding height HVC 19mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 22.8N/A
• Motor constant Bl/√RE 9.81N/√W
• Air gap height HAG 10mm

Diaphragm

• Effective diameter 330mm
• Effective area SD 900cm²
• Moving mass MMS 106g
• Moving mass (without air load) MMD 87.4g

Suspensions

• Stiffness KMS 9.17N/mm
• Compliance CMS 109µm/N
• Equivalent volume to the compliance VAS 114L
• Mechanical resistance RMS 4.57N·s/m
• Spider material with silicon damping

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 393mm
• Baffle cutout diameter 354mm
• Overall depth 167mm
• Volume occupied by the driver 4.5L
• Net weight 8.2kg