Audibax Zone 120BT - 4-zone 120W mixer amplifier for 100V line with Bluetooth

Audibax Zone 120BT - 4-zone 120W mixer amplifier for 100V line with Bluetooth

The Audibax Zone 120BT is a professional mixer amplifier designed for PA and background music systems in commercial installations. It offers four independent 100V zones switchable from the front panel, a low-impedance 4Ω output, an integrated media player (USB/SD, FM tuner, and Bluetooth), and comprehensive input connectivity including microphones with phantom power, balanced/unbalanced line input, telephone input, chime and fire alarm priority, as well as a 100V emergency input with a 24V control jack. With a Class A/B power stage, fan cooling, and electronic protections, it is a robust and easy-to-use solution for restaurants, hotels, shops, offices, and public buildings.

Main features

• Power and zones: 120 W RMS total with 4 individually switchable high impedance (100 V) output zones and “ALL” button; volume control per zone on the front panel.
• Speaker outputs: 100V line (equivalent impedance 84 Ω) and low impedance output to 4 Ω on terminal block; link output (RCA) for expansion with another amplifier.
• Audio inputs: 2 x balanced microphone (XLR/6.3 mm combo jack) with 15 V phantom power ; 1 x balanced Mic/Line switch input (combo); 2 x stereo line inputs (2 x RCA); priority Chime/Fire/TEL inputs on Euroblock.
• Integrated multimedia: digital player with screen; USB/SD (FAT16/FAT32), Bluetooth and FM tuner (87.5–107.9 MHz); plays MP3, WMA, WAV and FLAC (8/16/24 bit).
• Bluetooth: Integrated wireless link for direct playback from mobile devices.
• Safety and reliability: DC short circuit, overload, overtemperature protection and limiter; forced ventilation.
• Construction and installation: 19” 2U metal chassis; main power AC 230–240 V (50–60 Hz) and DC 24 V backup input for battery systems.
• Performance: 20 Hz–20 kHz response, SNR > 90 dB, THD+N < 0.5%, crosstalk > 70 dB.
• Dimensions and weight: 484 x 89 x 340 mm; 10 kg.

Product benefits

• Simple zone management: activate/deactivate each zone from the front panel and adjust its volume to adapt the music or public address system to different areas of the venue.
• Complete and priority connectivity: dedicated inputs for phone alerts, doorbell and fire alarm that silence other sources when necessary.
• Fewer devices, more control: integrated player (USB/SD/FM/Bluetooth) that eliminates external sources and simplifies installation.
• 24/7 reliability: Class A/B stage with active ventilation and protections; possibility of backup with 24 V DC for continuity of service.
• Scalable: Link output to add stages and grow in power or areas in the future.

Use cases

• Restaurant and hospitality: background music by zones and announcements by microphone.
• Retail and supermarkets: broadcasting promotions via public address system and emergency messages with priority.
• Offices and educational centers: general notices, telephone calls to areas and reproduction of content.
• Public buildings and gyms: music programming, announcements and management of areas with different levels.

Frequently Asked Questions

• Can I use the 100V and 4Ω outputs simultaneously? No. Only one speaker mode should be used at a time: constant voltage distribution (100V) or low impedance (4Ω).
• What formats does the USB/SD play? MP3, WMA, WAV, and FLAC (8/16/24 bit). The supported file system is FAT16/FAT32.
• Does it have phantom power for condenser microphones? Yes, 15V on MIC 1 and MIC 2, switchable from the rear.
• Can it be integrated with an alarm system? Yes. It includes a 100V emergency input with a 24V remote control that takes priority over all other signals.
• Can it be rack-mounted? Yes. It's a 19" 2U form factor.

Installation and connections

The speaker outputs are located on the terminal block: the two leftmost terminals are for the low-impedance output (4 Ω), and the two rightmost terminals are for the 100 V line. For 100 V systems, connect the positive terminal to the 100 V terminal and the negative terminal to COM. The sum of the speaker impedances at 100 V must not be less than 84 Ω (equivalent to 120 W at 100 V). The rear panel includes MIC 1–2 inputs (XLR/Jack combo with phantom power), a switchable MIC/LINE combo input, LINE 2–3 inputs on RCA connectors, priority Chime/Fire/TEL inputs on Euroblock connectors, an FM antenna input, a link output (RCA), and 24 V AC and DC power jacks.

Connectivity and player operation

From the front panel, you can select the source (USB/SD, FM, or Bluetooth), control playback, and adjust the player's volume. The LCD display makes it easy to navigate tracks/folders and select repeat modes. Bluetooth connectivity allows you to play audio from mobile phones, tablets, or computers within a typical range of up to 10 meters in areas free of interference.

Protections and maintenance

The unit includes a limiter, output short-circuit protection, overload protection, and over-temperature protection. Fan cooling keeps the stage operating safely during continuous use. Ensure proper ventilation and do not obstruct the grilles to extend the system's lifespan.

Project description

4-zone mixer amplifier, 120 W RMS, Class A/B, 100 V output (equivalent impedance 84 Ω) and 4 Ω output, 2 x balanced MIC inputs with 15 V phantom power (XLR/6.3 mm combo jack), 1 x balanced MIC/Line input (combo), 2 x stereo lines (RCA), priority inputs Chime/Fire/TEL (Euroblock), USB/SD/FM/Bluetooth player, 20 Hz–20 kHz response, SNR > 90 dB, THD+N < 0.5%, crosstalk > 70 dB, AC 230–240 V 50/60 Hz power supply, 240 W consumption, DC 24 V backup input, 19” 2U rack format, dimensions 484 x 89 x 340 mm, weight 10 kg.