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Funktion-One Research Limited – F221

Funktion One are renowned for the controlled energy of their loudspeaker systems – this is nowhere more evident than in their bass enclosures which are literally moving audiences around the world with hitherto unprecedented levels of quality vibration. To date, Funktion One’s large scale bass systems have been focused around work with 18”s in the form of F218s (with their unique and highly efficient loading technique) and the Infrabass / Infrahorn systems (for extreme low end reinforcement down to 30Hz and below).

In 2006, with F1s access to advanced materials and Andrews’ heightened understanding of loudspeaker and enclosure tuning, his original 21” concept was due for a revisit. This work has resulted in a new product with dramatically increased performance. Furthermore, by substituting Neodymium for Ceramic, the magnet weight has been reduced from 28.5kg to 11.5kg which opened up the possibility of a two by 21” enclosure. This resulting F221 is an extremely convincing bass enclosure combining real depth, upper bass speed and high efficiency.

It can be used in a multitude of system applications ranging from use with Resolution 2s, 4s and 5s through to use in Dance Stack systems. Eight of these F221s were debuted on the Origins stage at the Glade Festival in July 2006 to widespread acclaim and was launched at PLASA 2006. 32 F221s were used on Pyramid Stage at Glastonbury 2007. The F221s are also available self powered - fitted with the A6 amplifier module developed in conjunction with XTA. An F121 single version is also available.


  • Installed Sound
  • Live Production


Please refer to the official sales outlets for up-to-date prices.

Funktion-One Research Limited
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