Alto TS18S

Highlights

• 2,500-watt peak Class-D amplification for maximum, uncompromised low-end punch

• Massive 18-inch high-excursion transducer with a 3-inch high-temperature voice coil

• Heavy-duty internally braced MDF front-ported cabinet with an integrated 36mm pole socket

• Class-leading 137 dB maximum Sound Pressure Level (SPL) for high-impact performance

• Two XLR-1/4" combo inputs and two balanced XLR outputs for effortless stereo system linking

• User-selectable DSP configurations with three tailored EQ modes (Off, Live, DJ)

• Phase Alignment selector switch with four alignment settings (0°/90°/180°/270°)

Key Features & Benefits

• The Ultimate TrueSonic Powerhouse: Driven by an ultra-efficient Class-D module delivering 2,500 watts of peak power, this massive 18-inch sub pushes a class-leading 137 dB SPL to easily anchor large event halls, concert stages, and dense club environments.

• Flawless Low-Frequency Extension: The high-excursion 18-inch woofer effortlessly drops down to provide ultra-low frequency response, injecting physical, chest-thumping energy into your dance tracks and live kick drums.

• Acoustically Optimized MDF Cabinet: Built from premium, heavily braced medium-density fiberboard, the front-ported design ensures perfectly linear bass reproduction while completely eliminating cabinet rattling and boxy coloration.

• Instant DSP Optimization Switches: Quickly tailor your system’s acoustic crossover to match your event profile via the onboard DSP buttons, allowing you to cycle through specialized modes optimized for DJs, live instruments, or linear flat sound.

• Advanced Phase Correction Layout: Outfitted with an intuitive four-position phase correction switch to prevent frequency cancellation, ensuring that your sub bass flawlessly locks in time with your main top loudspeakers regardless of room placement.

• Built for Rigorous Touring: Coated in a highly durable, mark-resistant splatter finish and paired with ergonomic recessed steel handles, this heavy-duty subwoofer withstands the toughest transport cycles while looking completely professional on stage.

Why You’ll Love It

The Alto Professional TS18S is the absolute pinnacle of the TrueSonic subwoofer lineup, built for audio professionals who refuse to compromise on sheer low-end authority. Perfect for touring mobile DJs, large live bands, production companies, and high-energy nightlife venues, it transforms any standard PA into a club-ready sound system. Delivering bone-rattling bass depth, unmatched volume capabilities, and pristine acoustic control in a rugged package, it is the ultimate foundation for heavy, high-impact sound reinforcement.