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HEDD Tower Main Monitors

The HEDD Tower Mains open up new horizons for full range studio monitoring systems and to what they can do and mean for the sound engineer. The HEDD Tower Mains let you rediscover what decisive role dynamics play in audio reproduction and how pivotal they are to achieve the highest degree in realism and authenticity. They are more than just tools: They give recording and mastering engineers superior acoustic control over their work.


  • HEDD Tower Mains deliver a stunning reproduction quality up to very high SPLs.
  • The modular approach allows different set ups with one or two closed box subwoofers per channel.
  • The Tower Mains show advantageous directivity patterns to minimise reflections from the ceiling and the ground.
  • With a second Subwoofer on top and the help of the HEDD Lineariser® they are very near to the theoretical ideal of a coherent one point sound source – with stunning dynamic capabilities that surpass those of a 2×18” ported woofer design.

A modular Main Monitoring system

Modern Main Monitoring Systems have to be cost-effective and flexible enough to work in every possible studio environment. That’s why we designed the HEDD Tower Mains with a modular approach in mind.

They consist of one main unit (TM 80) that can be combined with either 1 or 2 subwoofers per channel. Each sub incorporates 4 drivers in a closed box design and 1.200 W of amplification. The Tower Mains components can be arranged flexibly, depending on the size and geometries of your working space. Due to a sophisticated filter design, you always will have a seamless transition and homogeneous sound: spectacular analog performance meets great versatility.

In the search for precision it was decided to apply closed box designs only as they principally allow the best approximation to ideal transient behaviour. The 3 dB lower efficiency compared to ported designs is compensated and even exceeded by having multiple drivers and enormous amplifier power. The TM 80 main unit with its five speakers in a vertically symmetrical alignment – a quasi d’Appolito configuration with the HEDD Air Motion Transformer as the centerpiece – delivers broad horizontal dispersion but a controlled vertical directivity. Thus unwanted reflexions from the ground or the ceiling are reduced.

The TM 80 is driven by 3x 300 W amplifiers with a response down to 80 Hz. The matching TMS 36 subwoofer comes with four 9” no-compromise long throw drivers and 1.200 W of amplifier power – 300 W per woofer to be more specific. Back to back sitting drivers compensate their impact to the enclosure thus avoiding cabinet resonances, their frequency response starts at 20 Hz (-3 dB) and stops at 80 Hz (-6 dB). The TMS 36 Subwoofer delivers an astounding transient response up to very high SPL levels.

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