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Bandpass Subwoofer B218A
High Power Low Frequency Loudspeaker


  • Portable rental system
  • Installed high power system
  • Large clubs and dance halls


  • Exceptional power handling capacity
  • Extended frequency response
  • Ultra compact design
  • Large area vents reduce air flow noise
  • Enhanced LF Driver cooling

The B218A is a carefully designed subwoofer intended for sound reinforcement applications. Lange Loudspeakers developed a proprietary cooling method that further enhances power handling capability and overall performance. Both ND magnets are placed in high turbulence areas of the reflex channels reducing by 25% the temperature rise of the driving mechanism of both LF drivers. A very dependable operation is achieved. When operating at full power the B218A has a reduced power compression ratio if compared to conventional systems. The B218A is a double tuned, double 18” Subwoofer incorporating Lange Loudspeakers loading principle. It is designed for use in applications requiring accurate and powerful reproduction of low frequencies.

The B218 has an operating frequency range of 30 Hz to 160 Hz with a maximum peak output of 141,8 db. It’s a rugged, lightweight centrally charged enclosure housing two ND18" woofers. These advanced components, each fitted with 4,5 inch voice coils, provide the highest output power-to-weight ratio of any speaker system in its class.

The cabinet consists mainly of two different volumes with different charging techniques. The back sides of the two drivers are tuned by a reflex tunnel, while the front area of the diaphragms is charged by a truncated horn throat that extends the frequency response up to 160 Hz. The carefully designed concept can stand all the electrical power the B218A is stated avoiding any bottoming effect. The system is rated 2400 Watts PGM on a 4 Ohm load and shall deliver 106dB with one watt input @ one meter in half space conditions and 135.8 dB continuous, 141.8dB peak SPL.

The B218A is constructed of 18 mm Finnish birch, pressed and glued together for maximum strength and finely finished in black textured paint. The cabinet is 77 cm deep (without wheels), 75 cm tall and 57,5 cm wide. Extensive internal bracing guarantees long term stability even in the most demanding conditions. Eight handles allow easy transportation.

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