BST FIRST-S2.1 - 2.1 active line-array system with 10″ subwoofer and 2 satellites

BST FIRST-S2.1 – 2.1 active line-array system with 10″ subwoofer and 2 satellites

The BST FIRST-S2.1 system is an active 2.1 PA solution designed to deliver balanced, powerful sound in venues for up to 100 people. It includes a 10″ (25 cm) bass-reflex subwoofer with Ø20 mm inserts for an extendable pole and two satellite arrays, each equipped with two 4″ midrange drivers and a 1″ dome tweeter . The 9 mm MDF chassis with a black textured finish combines strength and professional aesthetics. Thanks to its Class D amplifier with integrated DSP, it has five presets (vocal, live1, live2, DJ1, DJ2) that can be adjusted with a single knob, and allows separate control of the subwoofer and satellite volumes, as well as the subwoofer crossover frequency between 80 Hz and 200 Hz.

Main features

• 10″ (25 cm) subwoofer: 500 W RMS in bass-reflex cabinet with Ø20 mm inserts.
• 2-way satellites: 2×4″ midrange + 1″ tweeter, passive crossover and PTC protection.
• 2.1 amplification: 1×500 W to the subwoofer and 2×200 W to satellites.
• DSP with 5 presets: vocal, live1, live2, DJ1, DJ2.
• Speakon Connectivity: Inputs and outputs via Speakon connectors; LINK XLR output.
• Independent Volumes: Separate controls for subwoofer and satellites.
• Adjustable crossover: 80 Hz–200 Hz via potentiometer.
• Internal protection: Built-in limiter and alert LEDs (power, protection, signal, limiter).
• Mono/Stereo Function: Selector on control panel.
• Backlit Logo: With on/off switch for style and visibility.
• Included accessories: Tripod, extension bar, 2 Speakon cables 2m and 6 Speakon cables 50cm, 2 wall/truss mounts for satellites.

Product benefits

• Balanced sound: Deep bass from the subwoofer combined with clear mids and highs from the satellites.
• Quick setup: Tripod and extension bar included, plug-and-play Speakon connectors.
• DSP Versatility: Five preset modes adaptable to vocals, live music or DJ.
• Total control: Fine-tune crossover and levels to optimize response to space.
• Professional protection: Limiting circuit and status LEDs keep the system safe.
• Portability: Integrated handles and car-friendly design.

Use cases

• Small clubs and bars requiring compact and powerful PA.
• Conferences, training sessions, and corporate presentations.
• DJ events and parties with different types of music (preset DJ1, DJ2).
• Fixed installations in auditoriums and multipurpose rooms.
• Sound reinforcement in showrooms, fairs and exhibitions.

Frequently Asked Questions

• Can I link more satellites?
  Yes, the LINK XLR output allows you to link other amplifiers or satellites.
• How do I adjust the crossover frequency?
  By turning the “FREQ” potentiometer on the subwoofer control panel.
• What audio formats does it support?
  Line signals only via Speakon or XLR; USB/SD player not included.
• Is it possible to turn off the logo?
  Yes, it has a dedicated on/off switch for the backlight.

Description for projects

2.1 line-array active PA system with 10″ subwoofer (500 W RMS), 2 4″+1″ satellites (2×200 W), class D amplification with DSP, 5 presets, Speakon connections, LINK XLR output, 80–200 Hz crossover, limiter, status LEDs, mono/stereo, integrated handles, tripod and extendable bar.