Alto Professional TX12S 12-Inch 900W DSP-Enhanced Powered Subwoofer

A compact, ground-shaking 12-inch powered sub built to extend the low end of small to mid-size PA systems with simple controls, smart DSP, and a road-ready cabinet.

A Smart Fit For You

If your top speakers are doing fine for vocals and midrange but the low end is leaving you wanting, the TX12S is the kind of sub that quietly fixes that without a mountain of menus or a confusing setup. The 12-inch high-output woofer paired with a 900W Class-D amp anchors the bottom end for DJ sets, full-band gigs, and dance-friendly events, and the DSP section keeps things simple — switch between Live and Music EQ modes for the situation at hand, choose a low-pass crossover that matches your tops (80, 100, or 120 Hz), and flip polarity if you need to align with a specific room. Two combo XLR/TRS inputs and two balanced XLR thru outputs make it genuinely easy to drop into an existing rig, and the front-ported MDF cabinet with internal bracing delivers a tight, controlled bass response that fills the room without rattling.

Key Highlights

• 900W ultra-efficient Class-D power amplifier
• 12-inch high-output woofer with 2-inch voice coil
• Frequency response from 46 Hz to 115 Hz (-3 dB)
• 126 dB max SPL for serious low-end impact
• DSP-based EQ and system protection circuitry
• Music and Live EQ voicing modes for different applications
• Selectable low-pass filter at 80 Hz, 100 Hz, or 120 Hz (24 dB per octave)
• Polarity reverse switch for alignment with specific rooms or systems
• Two XLR/TRS combo line inputs for flexible connectivity
• Two balanced XLR line outputs for sending high-pass signal to your tops
• Internally braced front-ported MDF cabinet for tight, controlled low end
• Full metal grille for stage-ready protection
• Splatter-spray finish keeps the sub looking sharp under heavy use
• Two side handles for easy two-person carry
• Standard 36 mm pole socket for mounting top speakers above the sub
• Designed and tuned in the USA

Why You'll Love It

Great Fit For

• Mobile DJs running weddings, parties, and corporate events
• Singer-songwriters and small bands wanting real low end under their tops
• Worship teams and presenters needing fuller-range sound for music playback
• Bars, restaurants, and small clubs upgrading their PA's bottom end
• Fitness instructors and dance studios where bass impact matters
• Rental houses adding affordable, road-ready subs to their inventory
• Anyone pairing it with Alto TX, TS, or other compatible 8" to 12" tops

Sound and Setup

The TX12S delivers the kind of focused, articulate low end that separates a real subwoofer from a top speaker pretending to be one. The 12-inch driver and front-ported, internally braced MDF cabinet keep the bass tight and tuneful rather than boomy, and the 46 Hz low-frequency extension reaches deep enough for modern dance music, hip-hop, and full-band rock. Music mode adds a slight low-end push for dance-friendly playback, while Live mode flattens the response for vocal-heavy and acoustic work where you want the sub to support, not dominate. The three low-pass filter settings let you match common top-speaker crossover points, and the dual XLR thrus send a clean high-pass signal up to your tops so they're free to do what they do best — handle vocals and midrange without being asked to chase the lows.

Specifications