Voxativ utilizes several magnet types across its driver range. Many models use powerful Neodymium or Ferrite permanent magnets, while their top-tier drivers feature a field-coil system, which is an electromagnet powered by a dedicated supply.
I remember sitting in a dimly lit room, years ago, listening to a recording of a solo cello. It wasn’t just the notes I heard. It was the resinous catch of the bow on the string, the woody resonance of the instrument’s body, and the quiet, focused breath of the musician in the space between phrases.
The cello wasn’t just in the room with me; it was the room. The air itself seemed to vibrate with its presence.
That experience sparked a long fascination with how sound is reborn. How can a machine, a collection of wires and cones, resurrect a moment with such startling reality? The answer, I learned, is often hidden from view, deep inside the speaker itself.
It lies in the unseen engine that drives the entire performance. For a company like the Berlin-based manufacturer Voxativ, this engine is more than just a component; it is the heart of their artistic philosophy. So, when we ask what magnets are being used by Voxativ speakers, we are not just asking about materials.
We are asking about the source of the magic.
This exploration will take us inside the meticulous world of high-end audio. We will look at the specific types of magnets Voxativ chooses and, more importantly, discover why these choices matter so deeply to the sound you ultimately hear and feel.
The Soul of the Speaker: Why Magnets Matter
Before we can appreciate Voxativ’s specific choices, it helps to understand the role of a magnet in any speaker. Think of a speaker driver as a simple machine. It has a cone (the part that moves air), a voice coil attached to it (a loop of wire), and a magnet.
When an electrical signal from your amplifier flows through the voice coil, it creates a temporary magnetic field. This field pushes and pulls against the permanent field of the magnet, causing the coil and the attached cone to move back and forth with incredible speed.
This movement is what creates sound waves. The magnet’s job is to provide a powerful and perfectly consistent magnetic field for the voice coil to work against. If the magnet is weak or its field is unstable, the cone’s movement will be sloppy and imprecise.
The result is blurry, lifeless music. A strong, well-designed magnet acts as the unwavering foundation, the disciplined engine that allows for breathtaking accuracy and control.
Voxativ, known for its purist approach with full-range single-driver speakers, places immense importance on this engine. In a single-driver design, one cone is responsible for reproducing the entire frequency spectrum, from the lowest bass notes to the highest treble shimmer. This is an immense task, and it makes the quality of the magnetic motor system absolutely essential.
The Classic Choice: The Warmth of Alnico
Many of the most revered Voxativ drivers, like those in their Ampeggio series, are built around a legendary magnetic material: Alnico. This is not a modern invention. In fact, it’s a throwback to the golden age of audio, a material that defined the sound of classic loudspeakers from the mid-20th century.
What is Alnico?
Alnico is an acronym for its primary components: Aluminum, Nickel, and Cobalt, mixed with iron. It was one of the first truly powerful permanent magnet materials developed. Creating a high-quality Alnico magnet is a bit of a dark art.
It involves a complex and expensive casting and heat-treating process that few companies today have mastered. The price of cobalt, one of its key ingredients, also makes it a costly material to use.
So why would a modern company invest so much in this vintage technology? The answer lies entirely in the sound. Alnico magnets are known for creating a magnetic field that is not only strong but also exceptionally stable and symmetrical.
This stability is crucial for reproducing the subtle textures and tonal colors of music.
The Alnico Sound Signature in Voxativ Drivers
Listeners often describe the sound of a well-implemented Alnico driver as incredibly organic, rich, and musical. There is a certain warmth and body, especially in the midrange, that makes voices and acoustic instruments sound uncannily real. It’s the kind of sound that doesn’t just present the details; it presents them with a natural weight and texture.
When you listen to a vocalist through a Voxativ Alnico speaker, you hear not just the pitch of their voice but the character of their breath. A saxophone has that perfect “reedy” bite, and a piano note has a full, resonant decay that hangs in the air. This is the magic of Alnico.
It excels at reproducing the harmonic richness that makes music feel alive. For Voxativ, choosing Alnico is a deliberate decision to prioritize tonal beauty and emotional connection above all else.
The Modern Powerhouse: A Deliberate Contrast
In the world of speaker design, another type of magnet often dominates the conversation: Neodymium. These are powerful rare-earth magnets that have become incredibly popular over the last few decades. They offer a staggering amount of magnetic force for their size and weight, allowing engineers to create smaller, lighter, and very efficient speaker drivers.
Neodymium magnets are known for producing a sound that is often described as fast, clean, and highly detailed. Their immense strength allows for lightning-quick transient response, which means they can start and stop the speaker cone on a dime. This can be fantastic for reproducing the sharp attack of a snare drum or the intricate, rapid-fire notes in electronic music.
However, Voxativ has largely chosen a different path. While Neodymium is a remarkable material, the brand’s core philosophy is deeply rooted in the musical character that Alnico and another, even more exotic, technology provide. The decision to forgo the widespread use of Neodymium is not a rejection of modern technology, but rather a conscious commitment to a specific sonic signature.
The engineers at Voxativ believe the unique properties of Alnico and field coil systems offer a more natural and emotionally engaging presentation of music, even if they are more challenging and expensive to produce.
The Ultimate Expression: The Purity of Field Coil Magnets
For those who seek the absolute peak of audio reproduction, Voxativ offers something beyond conventional permanent magnets. They build drivers using field coil technology. This represents the pinnacle of their design philosophy and is found in their flagship models, such as the AC-4X.
What is a Field Coil?
A field coil speaker does away with a permanent magnet altogether. Instead, it uses an electromagnet. A large coil of wire is wrapped around a soft iron core where the magnet would normally be.
This coil is connected to its own dedicated, external power supply. When electricity flows through this coil, it generates an incredibly powerful and perfectly stable magnetic field.
Think of it this way: a permanent Alnico magnet is like an elite, highly trained athlete holding a steady position. A field coil is like a sophisticated hydraulic system that can be set to a precise force and will hold that position with absolute, unwavering perfection, free from any fluctuation. The magnetic field isn’t just permanent; it’s actively maintained and controlled.
The Auditory Experience of a Voxativ Field Coil
The sonic benefits of this approach are profound. As described by reviewers and owners, field coil speakers produce a sound that is utterly effortless and alive. Because the magnetic field is so immense and stable, the driver has a level of control that is simply not possible with permanent magnets.
The music flows with a sense of unrestricted dynamic freedom.
Sounds emerge from a completely silent background with startling realism. Complex passages remain clear and composed, never sounding strained or compressed. The effect is less like listening to a speaker and more like being in the presence of the original performance.
For a deep dive into this remarkable technology, you can explore detailed analyses on respected audio forums like What’s Best Forum, where engineers and audiophiles discuss the intricacies of these designs. It’s the ultimate expression of the idea that the speaker’s motor should be a flawless, invisible conduit for the music.
FAQ
Why are Alnico magnets so expensive?
Alnico magnets are costly for two main reasons: materials and manufacturing. One of their key components is cobalt, a metal with a volatile and often high market price. The manufacturing process is also far more complex than for common ceramic magnets.
It requires casting the material at very high temperatures and then using a controlled heating and cooling process in the presence of a strong magnetic field to align its structure. This is a specialized, labor-intensive craft that few companies still perform at a high level.
Do field coil speakers require a separate power supply?
Yes, they do. Since a field coil is an electromagnet, it needs a constant source of direct current (DC) electricity to generate its magnetic field. This means each field coil speaker driver has a dedicated external power supply unit.
While this adds a component to the audio system, it also allows for a level of control and magnetic field stability that is unmatched by any permanent magnet, which is why it is considered a no-compromise approach to speaker design.
Are Neodymium magnets better than Alnico magnets?
One is not inherently “better” than the other; they are different tools for different sonic goals. Neodymium magnets are incredibly strong for their size, leading to high efficiency and excellent transient speed, often described as a “fast” and detailed sound. Alnico magnets are prized for what many listeners perceive as a more natural, warmer, and harmonically rich tone, especially in the midrange.
The choice between them is a matter of design philosophy and the desired final sound signature.
What is a full-range single-driver speaker?
A full-range single-driver speaker, like those made by Voxativ, uses only one speaker cone to reproduce the entire range of musical frequencies, from low bass to high treble. This avoids the need for a crossover, which is an electronic circuit that divides frequencies between multiple drivers (like a woofer and a tweeter). Proponents of this design believe it offers superior coherence and a more seamless, point-source sound, but it places extreme demands on the quality of the single driver’s motor system.
How does the magnet affect the “speed” of a speaker?
A speaker’s “speed” refers to its ability to react instantly to the musical signal, starting and stopping the cone’s movement with precision. This is directly related to the magnet’s control over the voice coil. A stronger, more focused magnetic field provides a more powerful “grip” on the coil, forcing it to follow the electrical signal with greater accuracy.
This results in sharper details, clearer rhythms, and a more realistic portrayal of the attack and decay of notes.
Conclusion
The heart of a Voxativ speaker is not just a piece of magnetized metal. It is a carefully chosen instrument of expression. In the rich, textured warmth of Alnico, we find a commitment to musicality and the soul of classic recordings.
In the uncompromising power of the field coil, we see a relentless pursuit of realism, a desire to erase the line between the recording and the listener completely. These choices reveal that for Voxativ, building a speaker is about more than engineering; it is about art.
The components hidden inside the cabinet are what give the speaker its voice, its character, and its ability to connect with us on an emotional level. They are a testament to the idea that the deepest magic often comes from the parts we cannot see.
The next time you truly listen to a piece of music, close your eyes and ask yourself: are you just hearing a song, or are you feeling the breath of the artist who created it?
