Specifications
Nominal diameter 460 mm (18.0 in)
Nominal impedance 8 Ω
Minimum impedance 6.5 Ω
Nominal power handling1 1700 W
Continuous power
handling2 3400 W
Sensitivity (1W/1m)3 97.0 dB
Frequency range 35 - 1500 Hz
Voice coil diameter 116 mm (4.5 in)
Winding material Copper
Former material Glass Fibre
Winding depth 34 mm (1.33 in)
Magnetic gap depth 14 mm (0.55 in)
Flux density 1.16 T
Design
Surround shape Triple Roll
Cone shape Radial
Magnet material Neodymium Inside
Slug
Spider Double Silicone
Pole design T-Pole
Woofer cone
treatment
TWP Waterproof Both
Sides
Recommended
enclosure 150.0 dm3 (5.3 ft3)
Recommended tuning 35 Hz
Parameters
Fs 32 Hz
Re 5 Ω
Qes 0.32
Qms 5.6
Qts 0.3
Vas 187.0 dm3 (6.5 ft3)
Sd 1210.0 cm2 (187.6 in2)
η₀ 1.9 %
Xmax 14.0 mm
Xvar 16.0 mm
Mms 275 g
Bl 30.3 Txm
Le 1.9 mH
EBP 100 Hz
Mounting And Shipping Info
Overall diameter 460 mm (18.0 in)
Bolt circle diameter 443 mm (17.44 in)
Baffle cutout
diameter 422.0 mm (16.6 in)
Depth 242 mm (9.5 in)
Flange and gasket
thickness 16 mm (0.62 in)
Air volume occupied
by driver 10.5 dm3 (0.37 ft3)
Net weight 11.9 kg (26.2 lb)
Shipping units 1
Shipping weight 13.9 kg (30.6 lb)
Shipping box 500x500x250 mm
(19.7x19.7x9.8 in)
Service Kit
Replacement
diaphragm RCK18SW1158
