PA speakers
Alto Professional TS412
The Alto Professional TS412 is a mains-powered, two-way 12-inch PA loudspeaker intended for live sound, DJ playback and monitoring. Its Class-D amplification is rated at 2500W peak (1600W LF + 900W HF) and 1250W continuous RMS (800W LF + 450W HF); these are distinct ratings, not interchangeable. The compression driver with a one-inch exit and 1.4-inch voice coil and 12-inch woofer are complemented by onboard DSP with four Speaker Use modes and app-adjustable custom EQ. Two XLR/TRS combo inputs, mic/line switching and an integrated three-channel mixer accommodate microphones, instruments and line sources, alongside Bluetooth audio streaming. The Alto app provides remote configuration, while True Wireless Stereo can send Bluetooth audio to a second TS4 speaker. Bluetooth does not make the speaker battery-powered: it requires mains power, and wired inputs remain available. An XLR output, pole mounting, wedge-monitor positioning and M10 suspension points offer flexible system placement.
- 2500W peak / 1250W continuous RMS Class-D amplification
- 12-inch woofer; HF driver with 1-inch exit and 1.4-inch voice coil
- Bluetooth streaming and True Wireless Stereo linking
- Three-channel mixer with two XLR/TRS combo inputs
- DSP modes and free Alto app configuration
- Mains-powered; Bluetooth does not mean cordless operation
Handling and delivery: 2–5 days via DHL or FedEx. Free UK delivery.
- Manufacturer reference
- TS412
- EAN / GTIN
- 0816311012058
Technical specifications
- Peak amplifier power
- 2500W (1600W LF + 900W HF)
- Continuous RMS amplifier power
- 1250W (800W LF + 450W HF)
- Inputs
- Two XLR/TRS combo inputs; Bluetooth audio
- HF driver
- 1-inch exit; 1.4-inch voice coil


