DISC Alto Truesonic Sub 18" Active PA Subwoofer

589.99 (including VAT @ 23%)

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  • 18'' Low-Frequency, Long-Excursion Driver
  • 1200 Watts Class D Power
  • Mic/Line Left Channel, XLR Right Channel Inputs
  • 18 mm Birch Plywood Vented Cabinet
  • Metal Grille and Recessed Handles

DISC Alto Truesonic Sub 18" Active PA Subwoofer

The Alto Truesonic Sub 18" is a perfect match to your Truesonic speakers, creating a compact and portable PA system that sounds great. Despite its small and compact size, the TSSUB18 produces up to 1200W of Class D power that effortlessly delivers smooth sound in the 35Hz-125Hz frequency range. This Active Sub is ideal for bands and shows where low-end special FX can enhance the experience.

Product Ref: 20881

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Massive Sound - Professional Features

The frequency range of the Truesonic Sub 18" Active PA Subwoofer has been tuned to provide smooth, low-end sound production in the 37Hz to 125Hz range. It offers stereo input, an internal active crossover, and is housed in a rugged, compact, 18mm Birch plywood cabinet with durable metal recessed handle. When you're ready to extend the frequency range of your live performance reinforcement, Truesonic subwoofers are the effective, economical, and professional choice.

Truesonic Substance

As an active subwoofer system, the Truesonic Sub 18" Active PA Subwoofer offers a large 18" LF long-excursion driver. It's rated at a whopping 1200 watts and features a 3" copper sandwich voice coil which means you'll have plenty of low-end volume when you need it most.


  • 1200 Watts Class D power
  • Powerful 18" low-frequency, long-excursion driver
  • Stereo inputs: Mic/Line left channel, XLR right channel
  • Stereo XLR outputs: left link, right mono, internal 120Hz crossover on through
  • 18 mm birch plywood vented cabinet with metal grille and recessed handles
  • Adjustable level and polarity controls
  • 35 mm pole socket


  • Powered System: Continuous 600 Watts, Peak 1200 Watts
  • Frequency Response (-10dB): 37 Hz-125 Hz under analog processor
  • Maximum SPL @ 1m: 123 dB Continuous / 126 dB Peak
  • Transducer Low: 18" woofer, 3" copper sandwich voice coil, with long excursion
  • Active Crossover: Band pass type 12 dB / oct. under analog processor
  • Input Connectors: In-Left / Mono (Combo) Right (XLR-F) / Out-Left /Mono-Right (XLR-M) / Link-Left / Mono-Right (XLR-M) Balanced (15 kOhms)
  • Input: Level L-R Input Line at 0 dBu
  • Crossover Frequency: L-R output with high pass filter at 80 Hz or flat for L-R satellite
  • External Controls: VOLUME Control / PHASE Switch / HPF-80Hz Bypass / Power on with green LED / Clip limiter with red LED / Ground lift
  • Power Supply: 120-240 Volts in Switching Power mode
  • Enclosure Construction: 18mm Plywood cabinet, glued and reinforced, resistant black paint, metal grille, rubber foot, four optional wheels
  • Mounting: One standard metal pole-mount, two metal handle
  • Dimensions (WxLxH): 20.7in x 22.8in x 28.6in
  • Weight: 77.4 lb

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If any electrical items in your order are supplied with a United Kingdom plug connection, a suitable plug conversion adapter will be included free of charge.