Alto Professional TX 412B Battery powered PA system

Battery-Powered PA Loudspeaker for Cable-Free Performance

The Alto Professional TX 412B is a 600 W battery-powered 12-inch 2-way full-range loudspeaker for performers who need professional sound where mains power is unavailable. Class-D bi-amplification drives both drivers, producing a maximum SPL of 120 dB. An integrated rechargeable battery provides up to 10 hours of playback, removing power cables from outdoor gigs, weddings, and street performances.

Cable-Free Operation with Bluetooth TWS Stereo Linking

What separates this cabinet from typical mains-powered PA speakers is the combination of an internal rechargeable battery and Bluetooth True Wireless Stereo (TWS) linking, which lets two units operate as a wireless stereo pair without any signal cable. A built-in 2-channel mixer accepts microphone, line-level, and Bluetooth sources simultaneously, so a DJ can stream a backing track while announcing through a wired microphone.

600 W Class-D Bi-Amp Output

Bi-amplification routes dedicated power to each driver, keeping the low end tight and the high end clean at high volumes. Class-D efficiency keeps the amplifier cool and light, leaving weight budget for the battery rather than a heavy heatsink.

• RMS Power: 300 W — sustained output for vocals and music
• Peak Power: 600 W — headroom for transient peaks in live performance
• Amplifier Type: Class-D bi-amping with separate LF and HF amplifier paths

12-Inch Woofer with Titanium Compression Driver

The two-way configuration pairs a long-throw 12-inch woofer with a 1-inch titanium-diaphragm compression driver, giving the cabinet low-end weight for music playback and high-end clarity for spoken word.

• LF Driver: 12-inch (305 mm) woofer with 2-inch (51 mm) voice coil — extended bass response for full-range music
• HF Driver: 1-inch (25 mm) titanium diaphragm compression driver — crisp vocal reproduction without harshness
• Dispersion (H x V): 90° x 60° — wide horizontal coverage for audiences seated or standing across a room

10-Hour Battery, Bluetooth TWS, and Pole-Mount Enclosure

Battery life and connectivity determine how useful a portable PA is in the field. The onboard mixer handles microphone, line, and Bluetooth sources simultaneously, and the cabinet fits a standard 36 mm speaker pole or tilts into floor-wedge position.

• Battery Life: up to 10 hours — covers full-length sets on a single charge
• Wireless: Bluetooth streaming + TWS stereo linking — cable-free pairing of two cabinets
• Inputs / Outputs: Combo jack input, XLR Mix output — easy daisy-chaining to additional speakers
• Dimensions (H x W x D): 602 x 381 x 343 mm
• Weight: 13.3 kg — manageable for one-person load-in

Buskers, Mobile DJs, Wedding MCs, and Event Hosts

The TX 412B is the right choice for mobile performers and presenters who need a self-contained PA system that sets up in under a minute without hunting for a power outlet. Buskers, wedding MCs, and event hosts can run a microphone and streamed music through the same cabinet. The 120 dB maximum SPL comfortably covers audiences of 100 to 150 people, as reported by users running the speaker at live vocal gigs.

Alto Professional — Designed and Tuned in the USA

Alto Professional developed the TX Series to bring cable-free operation into the working musician's toolkit, refining earlier TX and TS technologies into a battery-powered cabinet. The TX 412B is designed and tuned in the USA, with a metal grille and ergonomic handles built for touring durability.