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F205
Loudspeaker



A new standard for sound.

Small size, works in ordinary rooms, and sound quality so much better it makes a real difference.

This is the sound of the future.









The sound

Significantly better sound.

What does that mean. Better compared to what.

There is this clarity, everything is so defined and sharp, yet at the same time it is so smooth and soft.

Instruments appear like solid objects with body, they have this sense of power and size.

The soundstage becomes 3-dimensional with full depth, and instruments appear as real objects with physical size. Even if your room is far from perfect.

This sound makes it very engaging to listen to music, it becomes addictive.

How it works

Compact, freestanding, sophisticated.

Sound radiation control and sufficient capacity provides sound with dynamics and realism.

Bass is handled by separate subwoofers. This is beneficial for both midrange and bass, because the units can both be constructed and placed optimally in relation to the frequency range they cover.

Separate bass-system also provides flexibility. Bass-system is chosen according to room size and preferences, and can also be upgraded if the need or desire for more bass arises. The larger Compact Horn models can be stacked in multiple units to provide enough capacity for a live concert in large rooms, budget is the only limit.

The T6-A Compact Horn subwoofer with integrated amplifier turns F205 into an active speaker system. The 2-channel amplifier with DSP in the subwoofer does crossover and processing of the sound and powers both the subwoofer and F205.

Technology

Only as strong as the weakest link. There is no point in making one brilliant solution for one particular problem, if the rest of the design is just average.

The key to dynamics and realism is sound radiation control and sufficient capacity. Traditional technology requires large loudspeakers to achive this. But it can also be solved in smaller physical format, with the right solutions. As in the F205.

The radiation control is achieved using horn for higher frequencies, and acoustic ports on the side of the cabinet at lower frequencies.

Crossover is a combination of active and passive. The low cut-off is implemented active at 120Hz, where the bass-system takes over. This crossover is made so that flat phase is possible and no time discontinuity occurs in the important upper bass area.

Crossover between midrange and tweeter is passive, with extremely sharp cutoff and controlled phase and time behavior. This ensures sound never comes from different speaker drivers at different time in the same frequency range, and this is of great importance for perceived soundstage and resolution.

Choice of parameters and properties for the drivers is responsible for much of the sound in the F205. The HF driver in the horn is a medium-sized AMT, it has exceptionally low distortion and decent capacity. The LF drivers have very good transient reproduction and high sound pressure capacity, as well as covering their range completely without resonances from diaphragm or other moving parts. This is possible because they do not play bass, and they only work up to 1700Hz where the HF section takes over.

Sound from the rear of the drivers is acoustically filtered inside the cabinet, and radiates out through the holes on the side. This sound, combined with the sound from the front, creates radiation control down in the midrange and upper bass frequency range. To achieve this, there are three chambers inside, with four different types of acoustic damping material, there are acoustic ports inside the cabinet. The radiation pattern gradually widens downwards in frequency, like a normal large speaker, only slightly narrower so that less sound is sent backwards and out to the sides. In front of the speaker, towards listeners, the radiation is even.

AMT driver in horn is the ultimate solution for high frequencies. Transparency and airy highs similar to a ribbon, but also much lower distortion and higher output capacity.

The horn with the AMT driver is designed for a very precise radiation pattern, where sound is even over a large area forward into the room towards listeners, and sharp cut-off outside, across the entire frequency range from 1700Hz to the top. Horns can also be used for the rest of the frequency range downwards, but then the speaker will become very large, with dimensions close to 1 meter in width.

Development of such a loudspeaker is a combination of art and science.

The rear stand provides vertical angle adjustment in 3 steps, for adaptation to different listening distances and listening heights.





Specifications

Model
F205 / F205-A Loudspeaker
Type
Free-standing active (F205-A) or passive (F205) loudspeaker for music and entertainment in small and medium rooms, to be used in stereo pair, integrated with bass-system for low frequency reproduction.
Frequency range
120Hz - 20KHz
Sensitivity
91dB/1m/2.83V
Rated impedance
4 ohm (Minimum 3.6Ω @196Hz)
Recommended amplifier power
5W to 400W
Power handling
300W AES (AES2-1984) / 600W Program (Normal music program material)
Output capacity
111dB/1m/>120Hz
LF section
2x5" high output capacity drivers in small cabinet with damped acoustic ports and internal chambers
HF section
Medium-size AMT driver in controlled directivity horn
Crossover frequencies
LF section to HF section: 1700Hz controlled phase, very steep cutoff
F205 to bass-system: 120Hz active dsp-controlled
Recommended listening distance
1.6m - 3.2m
Angular tilt adjustment for adaption to listening height and distance
0° - 2° - 4°
Horizontal coverage
±42°
Dimensions
949mm (floor-to-top)/162mm(cabinet baffle width)/182mm(cabinet depth)
Footprint 232mm(width)/204mm(depth)
F205 in Color
F205-A Active Version
Amplifier
Internal Hypex nCore FA251.
DSP functionality
Processing for bass-system crossover and integration, eq, delay, programmable.
Amplifier output power
250W/4Ω
Input Signal
Analog RCA 2.18Vrms,
Analog balanced XLR 6.15Vrms
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