RCF MB15X301

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 40 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 540cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.52mH
• VC Diameter 76mm
• Winding height HVC 17mm
• Winding material Aluminium

Magnet

• Force factor Bl 18N/A
• Motor constant Bl/√RE 7.75N/√W
• Material Ceramic

Diaphragm

• Effective diameter 330mm
• Effective area SD 900cm²
• Moving mass MMS 92g
• Moving mass (without air load) MMD 73.4g

Suspensions

• Stiffness KMS 5.88N/mm
• Compliance CMS 170µm/N
• Equivalent volume to the compliance VAS 195L
• Mechanical resistance RMS 4.39N·s/m
• Surround material Polycotton

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 393mm
• Baffle cutout diameter 354mm
• Overall depth 167mm
• Flange thickness 10mm
• Mounting depth 157mm
• Volume occupied by the driver 4.5L
• Net weight 8.0kg