BST HELIOS2.1 - 2.1 active line array system (8 satellites + 1 900 W subwoofer)

BST HELIOS2.1 - 2.1 active line array system (8 satellites + 1 900 W subwoofer)

The BST HELIOS2.1 active line array system offers a compact and powerful 2.1 PA solution, ideal for sound reinforcement in small venues, clubs, conferences and mobile events. It consists of an 18″ bass-reflex subwoofer with 500 W RMS of power and two two-way satellite arrays (8 units), each with two 4″ midrange speakers and a 1″ dome tweeter. The integrated amplification module delivers 500 W to the subwoofer and 2 x 200 W to the satellites (900 W total), includes an internal limiter, independent volume controls and an adjustable crossover to optimize the bass-treble mix.

Main features

• 18″ bass-reflex subwoofer 500 W RMS
• 8 2-way satellites (2×4″ midrange + 1″ tweeter)
• Module 2.1 1×500 W (sub) + 2×200 W (satellites)
• Built-in limiter to protect transducers
• Separate subwoofer and satellite volume controls
• Adjustable subwoofer cutoff frequency
• Built-in sources: LINE / USB / FM / Bluetooth
• Line inputs: RCA and XLR/Jack combo
• Line outputs: RCA and XLR
• Accessories: 2 x 8m Speakon cables, 6 x 50cm Speakon cables
• Supports: 2 feet and array bar
• Housing: Wood reinforced with black acrylic lacquer
• Infrared remote control

User benefits

• Balanced Sound: The 2.1 set separates low and mid/high frequencies for greater clarity.
• Quick Installation: Brackets and Speakon wiring included, ready for immediate operation.
• Source versatility: Playback from USB/SD, FM radio, Bluetooth or external line.
• Total control: Independent adjustment of levels and crossover frequency to suit the venue.
• Internal protection: The limiter prevents saturation and overload damage.

Use cases

• Musical events in small clubs and bars.
• Sound reinforcement for conferences, presentations and training.
• Fixed installations in auditoriums and assembly halls.
• Sound reinforcement at exhibitions, showrooms, and fairs.

Frequently Asked Questions

• Can additional speakers be used?
  Yes, the LINK output allows you to link more satellites with Speakon cables.
• How do I adjust the crossover?
  Using the “FREQ” knob on the subwoofer control panel, between 80 and 200 Hz.
• What players does it support?
  MP3 from USB/SD, FM radio and Bluetooth A2DP.
• Does it require special assembly?
  Includes brackets and array bar, no additional tools required.

Technical description for projects

2.1 active line array system with 18″ subwoofer (500 W RMS), 8 satellites 2×200 W, 900 W amplification, limiter, adjustable crossover, RCA/XLR/Jack inputs, USB/FM/BT, RCA/XLR outputs, 2 stands, Speakon cables, black wood cabinet