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RCF MB12N301 500W AES 12" 4 Ohm Replacement LF driver for ART422A
The MB12N301 is a neodymium, high efficiency, 12' mid-bass. High sensitivity, excellent linearity and very high power handling capabilities. The magnetic structure is powered by a large neodymium magnet that provides an extremely high flux density in the gap. The new hyper-vented aluminium basket and magnetic assembly design provide an excellent heat dissipation and lower power compression. Special air-forced ventilations are provided for voice coil, magnet assembly and basket. M-roll surround and spider design offer great linearity and precise reproduction.
Applications:
The very light moving mass and linear curve response make the MB12N301 the solution for high quality two or three way system.
The aluminium voice coil guarantee a very high efficiency in conjunction to a proper Q factor for good bass response.
Main Features:
- 3.0-inch, fibreglass inside/outside copper voice coil
- 1000 Watt continuous program power handling
- 98.5dB Sensitivity
- 50Hz -3.0KHz Frequency range
- Dual-forced air ventilation for minimum power compression
- M-roll surround and exponential cone geometry
General Specifications
- Nominal Diameter: 300 mm / 12 inch
- Rated Impedance: 4 Ω
- Program Power: 1000 W AES
- Power handling capacity: 500 W AES
- Sensitivity: 98.5 dB
- Frequency Range: 50 Hz - 3000 Hz
- Effective Piston Diameter: 260 mm / 10.2 inch
- Max Excursion Before Damage (peak to peak): 34 mm / 1.34 inch
- Minimum Impedance: 6.7 Ω
- Voice Coil Diameter: 76 mm / 3.0 inch
- Voice Coil Material: Aluminium
- Voice Coil Winding Depth: 17 mm / 0.67 inch
- Number of layers: 2
- Kind of layer: inside / outside
- Top Plate Thickness: 10 mm / 0.39 inch
- Cone Material: No pressed pulp
- Cone Design: Curved
- Surround Material: Polycotton
- Surround Design: M - roll
Thiele/Small Parameters
- Resonance frequency: 54 Hz
- DC resistance: 5.8Ω
- Mechanical factor: 3.1
- Electrical factor: 0.26
- Total factor: 0.24
- BL Factor: 19 T · m
- Effective Moving Mass: 48 g
- Equivalent Cas air load: 71 liters
- Effective piston area: 0.053 m²
- Max. linear excursion (mathematical): 6.0 mm
- Voice - coil inductance @ 1kHz: 1.8 mH
- Half-space efficiency: 4.00%
Mounting information
- Overall Diameter: 320 mm / 12.6 inch
- Bolt Circle Diameter: 294.5-304 mm / 11.6-11.9 inch
- Bolt Hole Diameter: 5.5 mm / 0.21 inch
- Front Mount Baffle Cut-out: 288 mm / 11.25 inch
- Rear Mount Baffle Cut-out: 288 mm / 11.25 inch
- Depth: 133 mm / 5.24 inch
- Volume occupied by the driver: 2.2 litres / 0.08 ft³
- Net Weight: 3.4 kg / 7.5 lbs
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