The F121 is small in size but provides outstanding low-frequency performance. It can be used in a variety of occasions that require large low-frequency sound pressure. Its output is almost equal to that of the F218.
The F121 is small in size but provides outstanding low-frequency performance. It can be used in a variety of occasions that require large low-frequency sound pressure. Its output is almost equal to that of the F218. F121 is a single 21" unit version of F221. It can be used with Funktion One's various mid- and high-frequency speakers to get surprising results. Advanced horn load technology and driver design meet the expectations of listeners and audiences watching performances all over the world. F121 uses a horn. Load technology and sturdy Funktion-One design dual 6" voice coil, neodymium magnet 21" driver. In addition, it can be ordered in 4Ω or 8Ω version, and equipped with wheels, steel mesh and support rods and other options.
characteristic:
• Advanced Tony Andrews-style horn load design
• Relatively small in size, but with surprisingly large output
• Funktion-One design 21" neodymium magnet drive
• The new unit is equipped with an upgraded version of the radiator
•Integrated handle
• Optional parts such as wheel plate, steel mesh and support rod are available
• 4Ω and 8Ω driver versions can be selected
driver | Frequency band | Sensitivity 1w@1m | Recommended power amplifier (rms)* | Nominal impedance |
21" | 20-200Hz | 105dB | 750W | 4Ω or 8Ω |
*AES standard
Frequency response ±3dB: | 40Hz-250Hz |
weight: | 72kg(159lbs) |
structure: | 18mm birch compression board |
interface: | 2 × Speakon NL4 |

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