Turbosound iQ18B 18" 3000W (Peak) Powered PA Subwoofer


94 out of 100. Incorporating 175+ ratings and reviews.

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Turbosound iQ18B Subwoofer

Gearank High Notes

What makes this subwoofer standout is its digital signal processing, which allows for speaker modeling where it emulates the sound of other popular speakers.

This expands both the tonal palette and viability of the speaker for use with different venues and musical styles. All of this is adjustable via USB or with its built-in LCD and control interface.

With its big 18" woofer, 4" voice coil and power rating of 3000W (Peak), the Turbosound iQ18B subwoofer is meant to be loud.

It boasts of Klark Teknik Class D amplification in a birch plywood enclosure with back-mounted castors for use when moving the speaker around while still being stable.

Other features include Ultranet digital audio compatibility and Neutrik powerCon connectors for easy power chaining.


  • Frequency Response: 36Hz-100Hz (-10dB)
  • Crossover: Active (High Pass L-R 24 dB/oct)
  • Max SPL: 127dB (Continuous), 133dB (Peak)
  • Power Rating: 3000 Watts Peak
  • Drivers: 1 x 18"
  • Input Connectors: 2 x XLR Combo
  • Output Connectors: 2 x XLR
  • Polarity: Not Specified
  • Enclosure Material: Birch Plywood
  • Dimensions: 27.2 x 21.0 x 22.0"
  • Weight: 87.5 lbs ( 39.8 kg)

Punchy and clean sounding are some of the many positive remarks that this subwoofer is getting from users. There are reports of it working well in various venues, from being used as a subwoofer for a multimedia player in a small room, to big a 17,000 sq/ft venue. Reliability also gets a lot of mention, with many owners still satisfied after many years of use. The practical addition of casters at the back also get special kudos from those who have to deal with the setup and breakdown of mobile setups.

There are a few who wish for extras like a bundled cover, and more mounting options, there are also some who caution about its weight, but the castors are put there for a purpose.

If you're looking for a versatile and loud powered subwoofer with testimonies of being reliable after years of use, then check out the Turbosound iQ18B.

Although this was previously on our recommended list, there are now more highly rated options available which you can see in our guide to The Best Powered PA Subwoofers


Great sub

Great sub