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  • Features:
    High power handling with low power compression for maximum dynamic range and accurate bass with Radial reliability
  • Benefits:
    The RV4564 bass unit is optimised for accurate bass reproduction. It has a massive Xmax, a symmetrical field magnet and extended centre pole for linear excursions up to 25mm peak to peak with accuracy and control. The critically doped carbon fibre loaded cone maintains rigidity for transient punch and slam. It features three cooling systems: a vented magnet, the patented Radial chassis and a multi-finned magnet intercooler. This technology keeps voice coil temperatures exceptionally low and substantially reduces power compression to maintain the full dynamic range even after prolonged operation. Additionally the stability of the Thiele-Small parameters resulting from cooler operation preserves system bass performance at high levels. The RV4564 is intended for use in high power professional studio monitors and sub bass systems.
  • Model Number: RV4564
  • Nominal Diameter (mm): 450
  • Power Capacity (Watt AES): 750
  • Sensitivity (dB/watt/m): 93
  • Frequency Range (Hz): 25-500
  • Impedance (Ohms): 4 or 8
  • BL Factor: 25.7
  • Voice Coil Diameter (mm): 100
  • Voice Coil Material: Copper
  • Maximum Excursion (mm): 44 (before damage)
  • Magnet Assembly Weight (Kg): 11.5
  • Effective Moving Mass (Kg): 0.235
  • Compliance (M/N): 0.00016
  • Volume Displaced (litres): 13
  • Connection: Metal Push Terminals
  • Chassis: Diecast Aluminum
Mounting Information
Parameter Measure Unit
Overall Diameter 459 mm
Mounting Bolt Circle Diameter 440 mm
Number and Size of Bolts 8 M8
Baffle Cutout Diameter 417 mm front mount
Baffle Cutout Diameter 398 mm rear mount
Depth 215 mm below front flange
Depth 229 mm total depth
Weight 17 Kg


Response Curve


Thiele-Small Parameters
Parameter Measure Unit
Fs 26 Hz
Re 5.8 Ohms
Qa 3.94
Qe 0.34
Qt 0.31
Vas 238 litres
Xmax ±12.5 mm
Sd 1029 cm²
Vd 1286 cm³
Le 3.8 mH
Suggested Enclosures
Volume(litres) Vent Diameters(cm) Vent Length(cm) System Q -3db freq(Hz)
100 3×10 48 10 37
200 5×10 57 10 28
300 6×10 64 10 23
Factsheet PDF


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