Line Array Series

Line Array Series

The Beta Three® line array series is a series of outstanding rental and touring solutions for live entertainments, sports events, speech reinforcement, and other venues where a line array system is desired. The line array series contains various models consisting of active and passive models for horizontal and vertical deployment complemented by reliable flying equipment. Selected models are also available in the weatherproof version, making them ideally suited for any outdoor application requiring a line array system with state-of-the-art sound performance and optimal scalability.

TLB-218 - Dual 18" Subwoofer
TLB-218 - Dual 18" Subwoofer
TLB-218 - Dual 18" Subwoofer


Dual 18" Subwoofer

The Beta Three® TLB-218 subwoofer loudspeaker utilises high power low frequency drivers with a structurally solid enclosure. The TLB Series subwoofer loudspeaker delivers extended low frequency bandwidth with excellent punch. These are suitable to be used in applications including sound reinforcement for Houses of Worship, Events, Indoor Stadiums, Theme Parks, Multifunctional Auditoriums, Schools, and Transit Terminals etc. These are excellent for live, rental and portable sound reinforcement applications. 


  • Weatherproof version TLB-218F available(IP46)

  •  2× 18” high efficiency subwoofers with 100mm voice coil

  • 2×NL4 connectors

  • Trapezoidal cabinet with integrated flywear and locking pins

  • Stainless steel grill

  • Combine with Bate three ® line array TLA series high power speaker for extended high quality music reproduction.

  • Computer aided design to optimize frequency and phase response

  • Cabinet constructed by Russian outdoor plywood

  • Durable weatherproof polyurethane textured base paint

  • All terminals are weatherproof

  • Cabinet construction and spare parts adoption strictly according international standard IP46


Acoustical specifications
Frequency Response(-3db):
Max SPL @ 1m:
2 x 18" Subwoofer
Input/Output section
Input Connectors:
2 x NL4 @ 1+ 2-
Sensitivity (1W @ 1m):
Power section
Total Power:
1600W(RMS); 3200W(MUSIC); 6400W(PEAK);
Nominal Impedance (Ohm):
Physical specifications
Cabinet/Case Material:
Birch plywood
8 x Iron handles
Weather resistant polyurethane finish, black powder coating for grille.
Dimension (W x D x H):
567 x 786 x 1075mm / (22.3 x 30.9 x 42.3in)
Package Dimensions (W x D x H):
1185 x 895 x 685mm / (46.7 x 35.2 x 27in)
Net Weight:
85 kg / 187.4 lb
Gross Weight:
90 kg / 198.4 lb

TLB-218 Application

    TLB-218 Installation

      TLB-218 Parts

        TLB-218 Cases

          TLB-218 Collocation



              TLB-218β3 TLB-218 Datasheet 1.0TLB-218  200KB 2022-05-22 08:59:01
              β3_TLB-218_PA_Chinese_Manualβ3_TLB-218_PA_Chinese_Manual 1β3_TLB-218_PA_Chinese_Manual  1561.3KB 2018-07-12 02:25:39
              β3_TLB-218_PA_English_Manualβ3_TLB-218_PA_English_Manual 1β3_TLB-218_PA_English_Manual  1487.22KB 2018-07-12 02:25:39