VOLT RV4504

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 25 - 600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 4.09
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 10mm
• Maximum excursion before damage xlim 25mm
• Air volume displaced at xmax VD 1029cm³
• Power handling P 750W
• Program power Pmax 1500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 2.9mH
• VC Diameter 100mm
• Winding material Copper

Magnet

• Force factor Bl 25N/A
• Motor constant Bl/√RE 10.7N/√W
• Weight 11.5kg

Diaphragm

• Effective diameter 362mm
• Effective area SD 1029cm²
• Moving mass MMS 160g
• Moving mass (without air load) MMD 136g

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 164L
• Mechanical resistance RMS 9.34N·s/m

Dimensions

• Nominal diameter 18″
• 450mm
• Overall diameter 459mm
• Baffle cutout diameter 398mm
• Overall depth 229mm
• Flange thickness 14mm
• Mounting depth 215mm
• Volume occupied by the driver 13L
• Net weight 17.0kg
• Frame material Diecast Aluminum