Alto Professional TS415 Active Loudspeaker

Alto Professional TS415 — 2,500W Bi-Amped Powered Loudspeaker

The Alto Professional TS415 is a 15-inch two-way active loudspeaker engineered for vocal PA, club-level DJ playback, and mobile live rigs. Built around a bi-amped Class D amplifier platform, this model pushes 2,500 W of peak power while staying light enough for a single operator to carry. The TS415 is the right choice for performers and venues that need high SPL, app-driven DSP, and Bluetooth flexibility without hauling a separate mixer.

Standout Features of the Alto TS415

What separates this cabinet from typical powered boxes in its tier is the integrated 3-channel mixer with dual XLR/TRS combo inputs and a dedicated Bluetooth channel — plug a mic, an instrument, and a phone in simultaneously. True Wireless Stereo linking streams Bluetooth audio to a second TS4 speaker in perfect stereo without a cable run. The free Alto App for iOS and Android exposes Custom EQ, Sub Size selection, and remote Speaker Use mode switching from anywhere in the room.

Power, Drivers, and Acoustic Performance

Bi-amped Class D amplification drives the 15" low-frequency driver and the 1" ceramic compression driver separately, giving the cabinet headroom for clean output at high volumes. Fanless cooling keeps stage noise down and improves long-term reliability compared to fan-cooled designs.

• Peak Power: 2,500 W — 1,600 W LF + 900 W HF, enough SPL for outdoor events and club-size rooms
• Continuous RMS Power: 1,250 W — 800 W LF + 450 W HF for sustained clean output
• Maximum SPL: 135 dB peak / 132 dB continuous — authoritative volume without harshness
• Frequency Range: 33 Hz – 20 kHz — full-range response from sub-bass to air
• Crossover Frequency: 2 kHz — clean handoff between LF and HF drivers
• Horn Coverage: 90° horizontal × 60° vertical — wide, even room dispersion

Who Is the Alto TS415 For

The Alto Professional TS415 suits solo performers, mobile DJs, small-to-mid venue operators, and houses of worship that need a single cabinet to handle vocals, music playback, and instrument reinforcement. Solo acts can run mic-plus-Bluetooth directly into the back panel without an external mixer, while DJs gain wireless stereo linking for quick two-speaker setups. Bands and event crews benefit from the 36 mm pole socket, wedge-monitor angle, and M10 suspension points that let the same box work as a front-of-house PA, a stage monitor, or a flown install. At 17.2 kg with a molded enclosure and perforated metal grille, it is built for repeated load-in and load-out.