18 TBX 46 Speakers
The most powerful 18" in our product range, 2000 W continuous program power handling, defines the "state of the art" about LF reproduction. A four inch copper wire voice coil with very high thermal capability and a ventilated magnet assembly allows a low power compression. A very low distortion figure is obtained using a double spider design and dual demodulation rings in the magnetic path. Proprietary
Speakers HPL Coaxials HF Compression drivers Horns
Specifications
Nominal Diameter | 460 mm (18 in) |
Nominal Impedance | 8 Ω |
Minumum Impedance | 6.1 Ω |
Power Handling |
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Nominal1 | 1000 W |
Continuous Program2 | 2000 W |
Sensitivity (1W/1m)3 | 97 dB |
Frequency Range | |
Voice Coil Diameter | 100 mm (4 in) |
Winding Material | Copper |
Former Material | Glass Fibre |
Winding Depth | 25 mm (1 in) |
Magnetic Gap Depth | 12 mm (.47 in) |
Flux Density | 1.1 T |
Also available in 4 Ω, data upon request
Thiele & Small Parameters4
Fs | 34 Hz |
Re | 5.2 Ω |
Qes | 0.33 |
Qms | 5.3 |
Qts | 0.31 |
Vas | 227 dm3 (8.0 ft3) |
Sd | 1210 cm2 (187.6 in2) |
η0 | 2.5 % |
X max | ± 9 mm |
X Var | ± 11 mm |
Mms | 201 g |
Bl | 25.8 T·m |
Le | 2.0 mH |
Mounting and Shipping Information
Overall Diameter |
| 460 mm (18 in) |
Bolt Circle Diameter | 440 mm (17.3 in) | |
Baffle Cutout Diameter | 422 mm (16.6 in) | |
Depth |
| 188 mm (7.4 in) |
Flange and Gasket Thickness | 16 mm (5/8 in) | |
Net weight |
| 13 kg (28.6 lb) |
Shipping Weight |
| 14.8 kg (32.6 lb) |
Shipping Box | 520x520x240 mm (20.5x20.5x9.4 in) | |
12 hours test made with continuous pink noise signal (6 dB crest factor) within the specified range. Power calculated on rated minimum impedance. Loudspeaker in free air.
2 Power on Continuous Program is defined as 3 dB greater than the Nominal rating. 3 Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance. Average SPL from 200 to 1200Hz.
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