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.

TLA21S - Self-powered line array system
TLA21S - Self-powered line array system
TLA21S - Self-powered line array system
TLA21S - Self-powered line array system


Self-powered line array system

TLA21S line array system consists of four TLA21R(right) or fourTLA21L(left) satellites and a TLB218a powered subwoofer. TLA21R/TLA21L is a compact, high power, light weight unit with 2x1.7" compression drivers and 1x10'' woofer. TLB218a is a dual 18" high power subwoofer with two amplifiers, one for driving the subwoofer TLB218a(4500W), the other for driving four satellites(900Wx4). A flying frame is included for connecting the satellites and subwoofer together to make a ground stacking system. The frame can also be used for flying up to 8xTLA21R/TLA21L in a line. 


  • TLA21R/TLA21L

  • 2 x 1.7" HF driver with perfect matching Wave Guide and differential Horn

  • 1 x 10" high end high power Neodymium LF driver

  • TLB218a

  • 2 x 18" premium drivers

  • Two high power amplifiers

  • System

  • System assembly is simple and fast.

  • A flying frame can either be used for flying the satellites or connecting the satellites and subwoofer to make a ground stacking system.


Acoustical specifications
Frequency Response(-3db):
TLA21R/TLA21L: LF:65Hz-3kHz; HF: 1kHz-20kHz; TLB218a: 40Hz-200Hz
Max SPL @ 1m:
TLA21R/TLA21L: LF: 116dB/122dB(PEAK), HF: 131dB/137dB(PEAK); TLB218a: 132dB/138dB(PEAK)
Dispersion (H x V):
120° x 30°
Transducer Driver:
TLA21R/TLA21L: 2 x 1.7" HF + 1 x 10" LF;TLB218a: 2 x 18" LF
Input/Output section
Input Connectors:
TLA21L/TLA21R: 2 x NL4; TLB218a: 6 x XLR
Power section
Total Power:
4500W + 900W x 4(RMS);
Voltage range:
AC 220V-240V~, 50/60Hz (or AC 110V-120V~, 50/60Hz)
Physical specifications
Cabinet/Case Material:
15mm 11 layers birch plywood
Appropriate frame with 1/2"shackle
2 x Wooden handles
Weather resistant polyurethane finish, black powder coating for grille.
Dimension (W x D x H):
TLA21L/TLA21R: 567 x 330 x 275; TLB218a: 567 x 1075 x 786
Net Weight:
128.3 kg / 282.9 lb
Gross Weight:
136.6 kg / 301.2 lb

TLA21S Application

    TLA21S Installation

      TLA21S Parts

        TLA21S Cases

          TLA21S Collocation



              TLA21Sβ3 TLA21S Datasheet 1.0TLA21S  200KB 2022-07-05 22:39:58
              β3_TLA_21S_PA_Chinese_Manualβ3_TLA_21S_PA_Chinese_Manual 1β3_TLA_21S_PA_Chinese_Manual  2626.18KB 2020-05-12 15:57:47