B&C Speakers 18 TBX 46 Leaflet

Nominal Diameter

460 mm (18 in)

Nominal Impedance

8 

Ω

Minumum Impedance

6.1 

Ω

Power Handling
(40 –400 Hz)
Nominal

1

1000 W

Continuous Program

2

2000 W

Sensitivity (1W/1m)

3

97 dB

Frequency Range

30-1500 Hz

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

Ω, data upon request

Fs

34 Hz

Re

5.2 

Ω

Qes

0.33

Qms

5.3

Qts

0.31

Vas

227 dm

3

(8.0 ft

3

) 

Sd

1210 cm

2

(187.6 in

2

)

η

0

2.5 %

X max

± 9 mm

X Var

± 11 mm

Mms

201 g

Bl

25.8 T·m

Le

2.0 mH

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)

1 

2 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.

4 

Thiele-Small parameters are measured after a high level 20 Hz sine wave precon-

ditioning test.

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 water-proof cone

treatment for safe use in adverse climatic conditions.