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Can a small speaker perform like a big
A small loudspeaker with controlled directivity.
For those who want something small and elegant, with decent sound, and never play loud.
F105 was born as a concept loudspeaker, to test out a new cabinet principle. Acoustic ports on the side of the cabinet controls radiation, so that directivity control is achieved all the way down into the bass range.
Small, freestanding with integrated stand, based on affordable components.
Bass is handled by separate subwoofers. This is beneficial for both midrange and bass, because the units can be placed optimally in relation to the frequency range they cover.
A proper crossover brings out the potential from the drivers and cabinet. Controlled response also in time gives the speaker very good holography and 3-dimensionality.
The T6-Flat-A bass-system with integrated amplifier turns F105 into an active speaker system. A 2-channel amplifier with DSP in the subwoofer does crossover and processing of the sound and drives both the subwoofer and F105.
The sound
Smooth, neutral and natural.
The controlled radiation means tonal balance and frequency response are less affected by room and placement. Down in the mid-range, there is an absence of resonances and box-sound that resembles good panel speakers - electrostatics magnestats.
In good acoustic surroundings, the soundstage becomes 3-dimensional with full depth, and instruments appear as real objects with physical size.
Compared to the larger speakers, dynamics are lacking, and they can't play really loud. But in many cases, loud is never required, and some will prefer the comfortable and more subdued transients.
Technology
Unique for the F105 are the acoustic ports on the side of the cabinet. These ports are acoustically damped and their output combine with the sound from the bass membrane to give the speaker a sound radiation more focused towards the front to the listener, across the whole frequency range down to bass.
The LF driver has an exceptionally linear response, with no resonances or faults. It has clear limitations with regard to capacity and dynamics, but within its comfort limits, it delivers very good sound.
Since the bass is reproduced by separate subwoofers, there is no need to push low end extension. Then the speaker can be designed to perform even better in the important midrange, and the solution with radiation control using acoustic ports becomes possible.
The HF driver has quite good capacity for a dome. A small, short horn as well as diffraction damping on the baffle along the horn edge improves the radiation pattern.
The crossover network is quite complex, in fact the most expensive component in the speaker except the cabinet. Here, the frequency range is divided between the LF and HF drivers, so that the overall frequency response - both on and off-axis, is correct. Time-domain and phase are also controlled - check the step response in the specification. What happens in time is important for stereo perspective and placement of instruments.
The cabinet construction is dead and free of resonances. The moderate size also makes it easier to avoid mechanical resonances.
The cabinet is mounted to the stand with 2 bolts. The bottom bolt can be moved so that vertical angle can be adjusted for different listening distance and listening height.
Specifications
Price and ordering
Price list
