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The Sovereign Pro 12-300 is intended for use in two-way ported enclosures, such as the classic bass driver plus horn tweeter or compression driver format. The unit features die cast chassis with long throw motor system and high linearity suspension allowing solid bass reproduction at high-power levels. The driver exhibits smooth frequency response to give a balanced tonal characteristic when properly matched to appropriate high-frequency drivers. The Sovereign Pro 12-300 is designed for use in 25 to 80 litre ported enclosures and features a 2.5 inch voice coil, 300 Watt power handling and 97.5 dB sensitivity.
Electro Acoustic Specifications:
Nominal Chassis Diameter 12"
Impedance: 8 Ohms
Power Handling: 300W (EIA 426A)
Peak Power (6dB Crest Factor): 1200W (EIA 426A)
Usable Frequency Range -6dB: 45 Hz - 4.5 kHz
Sensitivity (1 w - 1 m): 97.5 dB
Moving Mass inc. Air Load: 43 grams
Minimum Impedance Zmin: 6.84 Ohms
Effective Piston Diameter: 262 mm / 10.31"
Peak Displacement Volume of Cone Vd: 0.24 litres
Magnet Weight: 56 oz
Magnetic Gap Depth: 10 mm / 0.39"
Flux Density: 1.1 Tesla
Coil Winding Height: 18 mm / 0.70"
Voice Coil Diameter: 63.5 mm / 2.5"
Thiele Small Parameters:
FS Hz: 46 Hz
RE Ohms: 5.75 Ohms
Vas Ltr: 114
Vd litres: 0.24
CMS (mm/N): 0.278
BL T/m: 14.8
Mms (grms): 43
Xmax (mm) : 4.5
Sd (cm2): 540
Efficiency %: 2.89
Le (1k Hz): 1.64 mH
Mounting and Shipping Information:
Overall Diameter 330.2 mm / 13"
Width Across Flats: 309.5 mm / 12.19"
Flange Height: 7.8 mm / 0.305"
Baffle Hole Diameter F/M: 281 mm / 11.03"
Baffle Hole Diameter R/M: 257 mm / 10.13"
Gasket Supplied: Front & Rear
Fixing Holes: 4x 5.5 mm diam on 317.5 PCD
Depth: 134 mm / 5.27"
Weight: 5.2 kg
Recommended Enclosure Volume: 25 - 80 litres
Shipping Weight: 5.85 kg
Packing Carton Dimensions: 165 x 330 x 330 mm
Materials of Constructions:
Former Material: Glass Fibre
Voice Coil: Copper "sandwich" inside and outside windings
Magnet Material: Ferrite
Chassis: Die-cast Aluminium
Cone: Curvilinear Paper
Surround / Edge Termination: Polyvinyl Damped Half Roll Linen
Dust Dome: Solid Paper
Connectors: Push-button Spring Terminals
Polarity: Positive Voltage at Red Terminal Causes Forward Motion of Cone