Alto Professional Truesonic TS112A Powered Speaker

Posted 4 years ago by


The Alto Professional brand has just arrived on the speaker scene and they are already making big waves in the pro-audio industry.  The Truesonic line of speakers by Alto Professional are their latest and greatest speaker system that comes in a variety of sizes and flavors.  Alto Professional has sent me a set of TS112A 2-way Powered speakers to put to the test.  Check out my full HD-Video review inside to see how they perform.

Staff Review

Review Video & Demo

Setup & First Impressions

The Alto Professional brand has just arrived on the speaker scene and they are already making big waves in the pro-audio industry. The Truesonic line of speakers by Alto Professional are their latest and greatest speaker system that comes in a variety of sizes and flavors. The Truesonic speakers are available in 10-inch, 12-inch, and 15-inch, active 2-way speaker setups and a 12-inch and 15-inch passive setup. They also offer powered subwoofers in 12, 15, or 18-inch configurations. If you don’t want an on-board amplifier, then Alto has you covered with their passive 12 and 15 inch versions. So there is definitely something for everyone here.


Our review is based on the Powered 12-inch; 2-way TS112A Truesonic speakers. The first impressions of these speakers are excellent as each speaker is lightweight thanks to the polypropylene trapezoidal cabinet that also remains very durable and shock resistant for ample protection. The front of the cabinet protects the woofer and the horn from any accidental impacts. The cabinet also has handles on the sides and on the top for easy transport. They also have a stand/pole mount underneath, they can be used on the floor in a wedge configuration, and they can also be stacked one on top of the other.

These speakers are powered by an 800 watt Class D lightweight (fan-cooled) internal amplifier that requires a power connection directly to the speaker. The speaker runs at about 400 watts continuously and has a very nice horn for the highs and mids and a great 12-inch woofer that provided more bass than I could ever recall coming out of a speaker that small. The highs were very crisp all the way through and the bass was seriously booming throughout our entire test run. I am still blown away at the deep bass response inherent in the 12-inch woofer on the TS112A. We never had any issues with popping, hissing, interference, or humming during our two hour stress test. The system performed flawlessly during my time with the pair. There are two separate XLR/quarter-inch input connections each with their own volume control knob that can act as a mixer when switching between the inputs. There is also an XLR output to “daisy-chain” to other speakers.

Conclusion / Recommended For

In conclusion, I must say I was surprised at the overall performance of these speakers…so much so that I want a set for myself. The TS112A Powered speakers by Alto would work perfectly for Mobile DJ’s, club installations, professional or personal setups. The Bass response and handling is above and beyond what is expected and the highs and mids remain in balance even at the higher volumes. The price of the TS112A is about $300 at retail and I think it’s a fair price for a very competitive product. They are lightweight and very versatile in the many ways they can be setup. Anyone looking for a new set of speakers should seriously give some consideration to the Alto Truesonic speaker line.

Pros & Cons


  • True 400 Watts RMS Continuous amplified speaker system
  • Excellent Ergonomics (Lightweight, Stackable, Pole Mountable, Stage Angle, Handles)
  • Very Good Sound Quality for Pro Audio & Mobile DJ Applications
  • Durable polypropylene trapezoid cabinet
  • Two separate inputs with On-board Mixer


    Alto ProfessionalSpeakersVideos


    Features & Specs

    Active 800 Watt 2-Way 12" Loudspeaker

    800 Watts Class D power
    12” low frequency transducer, 1” neodymium driver
    Two Mic/Line combo inputs with independent volume controls
    XLR output to link speakers
    Lightweight, trapezoidal cabinet with handles
    Use as a traditional upright loudspeaker or as floor wedge monitor
    Stand/pole mountable or flyable
    Clip Limiter with red LED
    Ground Lift switch
    Contour switch for increased EQ control
    Accurate audience coverage, not just on-axis
    Designed and tuned in the USA


    Transducer Low: 12” Woofer, with 2” voice coil
    Transducer High: Neodymium compression driver, 1” exit with 1” voice coil
    Power Amplification: 800 Watts peak (670 W LF + 130 W HF), 400 Watts continuous (335 W LF + 65 W HF)
    Frequency Range (-10 dB): 54 Hz - 20 kHz
    Frequency Response (±3 dB): 65 Hz - 19 kHz
    Maximum SPL @ 1m: 125 dB peak, 122 dB continuous
    -6 dB Nominal Coverage: (80° / 100° H x 60° V)
    Active Crossover: 2.5 kHz
    Connectors: 2 x Mic / Line Female XLR - 1/4” combo inputs, 1 x Loop - Out Male XLR
    Input Control: Line / Mic -? to +50 dB, Maximum input level +23 dBu, Input Impedance 15 kOhms
    External Controls: Volume, Power switch with LED indicator, Clip/Limit LED, Ground Lift switch
    Protection Features: Over-excursion, Thermal, Driver
    AC Power: 100 VAC, or 110 – 120 VAC, or 220 - 240 VAC (50 / 60 Hz)
    Enclosure: Trapezoidal, with floor monitor capability. Injection molded, polypropylene enclosure, with perforated steel grille
    Mounting: Integrated pole-socket (36 mm dia.) Two handles, 5 M10 threaded sockets: 2 top, 2 bottom, 1 pullback

    Dimensions (WxLxH): 648mm x 383.8mm x 365mm
    Weight: 35 lb

    Best Price for the Alto Professional Truesonic TS112A Powered Speaker

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