Rcf MB12N405 12-in Woofer W/hypervented Neo Mid-bass Design W/a Linear Frequency Response & Very High Efficiency

To get this performance the magnetic structure use a high flux neo disc & the cone assembly a fibre loaded exponential shape along w/a high excursion triple roll, constant geometry surround.
The fiberglass former & aluminium voice coil provide a very high power handling maintaining a light mass & a proper Q factor for bass alignment.
* Ideal where is required extremely high power handling, very high efficiency & perfect linearity.
Is the ideal 12-in mid-bass woofer for reference high fidelity, high performance midbass application in compact 2 way system.
PART NUMBER: 11100112
* 4-inch, fibreglass inside/outside aluminium voice coil
* 2000W continuous program power handling
* 98.5 dB Sensitivity
* 50 Hz - 2 kHz Frequency range
* Dual-forced air ventilation for minimum power compression
* Triple roll surround & exponential cone geometry
* Nominal Diameter:300 / 12 mm/inch
* Rated Impedance:8 Ohms
* Program Power:2000 W AES
* Power handling capacity:1000 W AES
* Sensitivity:98.5 dB
* Frequency Range:50 Hz / 2000 Hz
* Effective Piston Diameter:260 / 10.2 mm/inch
* Max Excursion Before Damage (peak to peak):53/ 2.08 mm/inch
* Minimum Impedance:6.6 O
* Voice Coil Diameter:100 / 4.0 mm/inch
* Voice Coil Material:Aluminium
* Voice Coil Winding Depth:20 / 0.78 mm/inch
* Number of layers:2
* Kind of layer:inside / outside
* Top Plate Thickness:12 / 0.47 mm/inch
* Cone Material:No pressed pulp
* Cone Design:Curved
* Surround Material:Polycotton
* Surround Design:Triple roll
* THIELE/SMALL PARAMETERS
* Resonance frequency:52 Hz
* DC resistance:5.0O
* Mechanical factor:6.0
* Electrical factor:0.21
* Total factor:0.20
* BL Factor:23.5 T m
* Effective Moving Mass:72.5 g
* Equivalent Cas air load:53 liters
* Effective piston area:0.053 m
* Max. linear excursion (mathematical):7.3 mm
* Voice - coil inductance at 1kHz:1.2 mH
* Half-space efficiency:3.31 Percent
* Overall Diameter:320 / 12.6 mm/inch
* Bolt Circle Diameter:293-304 / 11.5-12 mm/inch
* Bolt Hole Diameter:6.5 / 0.3 mm/inch
* Front Mount Baffle Cut-out:282 / 11.1 mm/inch
* Rear Mount Baffle Cut-out:284 / 11.2 mm/inch
* Depth:125.5 / 4.9 mm/inch
* Volume occupied by the driver:2.9 / 0.098 liters/ft cubed
* Net Weight:7.7 / 16.9 kg/lbs
* Shipping weight:8.7 / 19.1 kg/lbs