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Alto Trusonic T312S Active PA Subwoofer

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Brand new for 2019 from Alto, the TS3 range of powered subwoofers, suitable for a variety of situations featuring;

✅ 12 inch Woofer
✅ 2000 Watts of power
✅ XLR outputs, with six discreet output modes for ideal matching with companion speaker
✅ Integrated 35mm pole socket

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In Stock


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Designed as the foundation to your sound

When your sound needs a bit of a low-frequency boost or a bit of punch added you need a good Subwoofer, now Alto Professional have you covered with a brand new range of Active PA Subs called the TS31 range. Building upon their success of the TS active speaker range this 12 inch sub has a lot to offer your sound setup.

Premium Components

Featuring premium components such as a dense wooden composite enclosure, which is resonance free, allowing for near perfect acoustic reproduction and a crisp sound unlike the traditional metal or plastic walled sub-woofer which has a tendancy to flex and distort the sound signature and dull the impact of the sub.  

The Perfect Match

For a sub to sound its absoloute best in a sound system, it needs to be able to blend seamlessly into any setup. The TS312S truly excels at this, as all TS300 series subs have six different DSP outputs, meaning that the frequency response and crossover frequency are precisely matched to the speaker its alongside. Four of these modes are designed to match the Alto TS2 & TS3 series speakers, whereas the other two are customisable to match non Alto speakers

Precision-Engineered for Performance

Using Finite Element Analysis, the team at Alto have optimised the magnetic structure of the subwoofer, enabling the sub to retain a tight voice coil for maximum sensitivity. The TS312S features an 2000 watt onboard amplifier (1000 watts in continuous mode) with an electronic chip that enables a limiter which ensures the system sounds its optimum, no matter how hard you push the sub.


Additional Information

Brand Alto
Woofer 12" Woofer
Hi-pass Outputs No
Built-in crossover No
Warranty 1 Year

Output Power 2000W peak, 1000W continuous
Transducer Low 12” (305mm) woofer
Frequency Response 44Hz – 95Hz (- 3dB)
Frequency Range 38Hz – 110Hz (-10dB)
Maximum SPL 129dB (@ 1m)
Connections (2) XLR+1/4” (6.35mm) inputs; (2) XLR outputs; (1) IEC power cable input
External Controls Volume control, signal/clip limiter with LED, DSP output mode switch with LED, polarity-reverse switch with LED, extended
low-frequency switch with LED, power switch with LED
Electronic Protections Electronic clip, thermal and transducer overdrive protection
Enclosure Internally braced MDF cabinet; 36mm mounting pole socket on top panel


  • Connection Standard IEC cable
  • Input Voltage 110–120, 220–240VAC; 50/60Hz
  • Consumption 1000W
  • Fuse T10AL AC250V (110–120V) or T5AL AC250V (220–240V)

(height x width x depth)
17.9” x 18.1” x 19.9” / 456 x 459 x 505mm
Weight 55.12 lbs. / 25kg

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Spend over £150 and get FREE UK Delivery! (UK mainland only)

Delivery Destination Delivery Times Cost (under £150) Cost (over £150)
UK Mainland Same Day Dispatch* (1-2 working days) £4.99 Free
Ireland Same Day Dispatch* (2-5 working days) £9.99/£19.99** £9.99/£19.99**

*Applies to In Stock items. Orders placed after 2pm will be dispatched the following working day. Free next day delivery does not include Saturdays. We can arrange Saturday delivery for £10 per box (please call to order).

**Any order under 0.9kg in weight will be charged at £9.99 (ships by Royal Mail), any order 0.9kg or over will be charged at £19.99 (ships by courier).

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We operate an easy returns process. If you decide you don't want an item, please contact us within 7 days of delivery for a returns number. For more information, please read our return's policy.

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