Description
Specifications | 
|
| Nominal diameter | 460 mm (18.0 in) | 
| Nominal impedance | 4 Ω | 
| Minimum impedance | 4.0 Ω | 
| Nominal power handling | 1500 W | 
| Continuous power handling | 3000 W | 
| Sensitivity (1W/1m) | 96.0 dB | 
| Frequency range | 35 - 1000 Hz | 
| Voice coil diameter | 100 mm (4.0 in) | 
| Winding material | Copper | 
| Former material | Glass Fibre | 
| Winding depth | 31 mm (1.22 in) | 
| Magnetic gap depth | 15 mm (0.59 in) | 
| Flux density | 1.15 T | 
Design | 
|
| Surround shape | Triple Roll | 
| Cone shape | Radial | 
| Magnet material | Ferrite | 
| Spider | Double Silicone | 
| Pole design | T-Pole | 
| Woofer cone treatment | TWP Waterproof Both Sides | 
| Recommended enclosure | 200.0 dm3 (7.06 ft3) | 
| Recommended tuning | 32 Hz | 
Parameters | 
|
| Fs | 33 Hz | 
| Re | 3.2 Ω | 
| Qes | 0.34 | 
| Qms | 6.23 | 
| Qts | 0.32 | 
| Vas | 181.5 dm3 (6.41 ft3) | 
| Sd | 1210.0 cm2 (187.6 in2) | 
| η₀ | 1.8 % | 
| Xmax | 12.0 mm | 
| Xvar | 14.0 mm | 
| Mms | 268 g | 
| Bl | 22.8 Txm | 
| Le | 1.64 mH | 
| EBP | 97 Hz | 
Mounting Info | 
|
| Overall diameter | 460 mm (18.0 in) | 
| Bolt circle diameter | 442 mm (17.4 in) | 
| Baffle cutout diameter | 422.0 mm (16.6 in) | 
| Depth | 241 mm (9.5 in) | 
| Flange and gasket thickness | 16 mm (0.61 in) | 
| Air volume occupied by driver | 11.0 dm3 (0.39 ft3) | 
| Net weight | 15.1 kg (33.3 lb) | 
Service Kit | 
|
| RCK18TBW1004 | 
