Alto Professional manufactures high-performance live sound reinforcement equipment, including powered loudspeakers, mixers, and bluetooth audio solutions.
Alto Professional is a leading manufacturer of professional audio equipment designed for live performance and music production. A member of the inMusic Brands family, Alto is best known for its robust line of powered loudspeakers, such as the widely popular TS (Truesonic) and TX series, which deliver high-output sound for musicians, DJs, and venues.
The brand also offers portable PA systems, analog and digital mixers like the TrueMix series, and wireless connectivity tools. With a focus on durability, affordability, and sonic accuracy, Alto Professional products are engineered to withstand the rigors of the road while providing clear, powerful audio.
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Ensure your speaker is powered on. Press and hold the Pair button for 3 seconds to enter pairing mode (the LED will flash). Navigate to your device's Bluetooth settings, select the Alto speaker model (e.g., TS412), and connect. Use code '0000' if prompted.
Power on both compatible speakers. Connect your Bluetooth device to the primary speaker first. Then, press and hold the Link button on the primary speaker and the secondary speaker for 3 seconds. The speakers will search and pair wirelessly.
The red Signal/Limit LED indicates that the internal protection circuit is active due to a high audio signal level. To prevent overheating or damage, immediately reduce the volume on your audio source or the input gain on the loudspeaker.
Warranty details can be found in the Safety & Warranty manual included with your product or by visiting altoprofessional.com/warranty.