18-inch Low Frequency Woofer

The TNA-1800SA Active subwoofer features a HH designed 18-inch low frequency woofer with exceptional high output. Equipped with integrated rigging hardware, the TNA-1800SA can be installed quickly and easily. The TNA-1800SA offers a max SPL of 138 dB and offers a frequency response as low as 32Hz. The TNA-1800SA offers an ideal venue installation or point source solution. Ideal for venues, schools, sports, gyms, hotels and more.


  • 4 inch hh designed coaxial woofer
  • 100v transformer power taps: 30w, 15w, 6w
  • 70v trasnformer power taps: 15w, 7.5w, 3w
  • 106 db max spl (1m)
  • 4 position front power tap
  • Push spring input connectors

The HH TNi range has been engineered to provide the best audio performance, combined with compact dimensions and flexible mounting options to suit a wide range of installation projects.

From music venues to retail stores, cafes and restaurants to meeting rooms and public buildings, places of worship, fitness studios and hotels the TNi series are the ideal solution.

The five passive and two active models all feature high performance 2-way designs with timbre balancing across the range, enabling different models to seamlessly integrate in one installation. With renowned HH woofers and LaVoce compression drivers; the TNi family offer precisely controlled directivity and superb voice clarity for all speech applications, but also dynamic, musical response for foreground or background music use.

The HH TNi range are available in white or black finishes to suit your application

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