Specifications
Nominal diameter 320 mm (12.0 in)
Nominal impedance 8 Ω
Minimum impedance 6.3 Ω
Nominal power handling1 250 W
Continuous power
handling2 500 W
Sensitivity (1W/1m)3 98.0 dB
Frequency range 50 - 3000 Hz
Voice coil diameter 64 mm (2.5 in)
Winding material Copper
Former material Glass Fibre
Winding depth 13 mm (0.51 in)
Magnetic gap depth 8 mm (0.31 in)
Flux density 1.15 T
Design
Surround shape Double Roll
Cone shape Exponential
Magnet material Neodymium Inside
Slug
Design
Spider Single
Pole design Straight Pole
Woofer cone treatment WP Waterproof Front
Side
Recommended
enclosure 40.0 dm3 (1.41 ft3)
Recommended tuning 64 Hz
Parameters4
Fs 52 Hz
Re 6 Ω
Qes 0.32
Qms 4.3
Qts 0.3
Vas 64.0 dm3 (2.25 ft3)
Sd 522.0 cm2 (80.9 in2)
η₀ 3.4 %
Xmax 4.5 mm
Xvar 6.0 mm
Mms 55 g
Bl 17.5 Txm
Parameters
Le 1.1 mH
EBP 162 Hz
Mounting And Shipping Info
Overall diameter 313 mm (12.32 in)
Bolt circle diameter 299 mm (11.77 in)
Baffle cutout
diameter 282.0 mm (11.1 in)
Depth 133 mm (5.24 in)
Flange and gasket
thickness 9 mm (0.35 in)
Air volume occupied
by driver 2.0 dm3 (0.07 ft3)
Net weight 1.9 kg (4.2 lb)
Shipping weight 2.4 kg (5.3 lb)
Shipping box 340x340x170 mm
(13.4x13.4x6.7 in)
Service Kit
Replacement
diaphragm RCK12CL648
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