In fact, the choice of “motor” materials makes use of magnetic oil for cooling and resonance damping unnecessary!

All these features in combination allow the diaphragm to move effortless and the result is a very natural, detailed, dynamic and open sound reproduction.

Mid-woofer/woofer

The woofer of the D 4 speakers features a brand new wood fibre cone. This unique cone is made from wood fibre material, characterized by very uneven fibres with different resonance properties. And thus, when these fibres are pressed into shape to form a loudspeaker cone, the different fibres will prevent each other from vibrating.

Furthermore the cone is coated twice in order to fine-tune rigidity and internal damping.

First it is lacquered on both sides for increased stiffness – and as a side benefit UV resistance is obtained - and secondly it is coated on the backside with a tough hardening resin to maximise internal damping.

The result is a cone with very well controlled break up modes resulting in extremely low distortion all over and a very open and detailed midrange for optimum voice reproduction.

The basket is made of magnesium giving several benefits:

First of all it makes it possible to create a very open basket

–even behind the spider – thus ensuring high airflow at low frequencies, avoiding reflections at high frequencies and preventing under-/overpressure causing mechanical losses.

Secondly, as magnesium is a non-magnetically material, the magnetic force from the magnet does not spread out in the basket, but stay concentrated where it is needed; around the voice coil.

Finally, the very rigid material ensures that the heavy magnets and the voice coil always are perfectly aligned with the voice coil in the exact center of the magnet gap.

To ensure that the units are firmly attached – and airtight – it is mounted using 6 screws, and the backside of the basket features two thin silicon stripes. Besides from ensuring air tightness, the silicon stripes also prevent any potential vibrations that could arise between the cabinet and the unit.

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JAMO D 4 manual Mid-woofer/woofer
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D 4 specifications

The JAMO D 4 series represents a blend of innovative audio technology and sophisticated design, aimed at providing an immersive sound experience for music lovers and home theater enthusiasts alike. With its elegant aesthetic and robust performance, the D 4 series has garnered attention for its commitment to high-quality audio reproduction.

One of the standout features of the JAMO D 4 is its advanced driver technology. Each speaker in the series features a proprietary bass driver designed for low distortion and deep bass response. The driver’s design allows for a more controlled and responsive sound, making it ideal for bass-heavy music genres as well as detailed vocal performances. Coupled with a high-frequency driver that delivers crisp and clear highs, the D 4 speakers produce a well-balanced audio experience.

The cabinet design of the JAMO D 4 series is not only visually appealing but also essential for optimal sound quality. The enclosure is crafted from high-quality materials that minimize resonances, allowing the speakers to produce purer sound. Its sleek and modern finish is available in a variety of colors and textures, ensuring a seamless integration into any home décor.

Another significant technology integrated into the JAMO D 4 speakers is the waveguide technology, which enhances sound dispersion and helps to create a wider listening area. This technology ensures that everyone in the room can enjoy a consistent sound experience, making it perfect for gatherings or home theater settings.

In terms of compatibility, the D 4 series is designed to work well with various audio setups, including receiver amplifiers and streaming devices. Its flexible connectivity options make integration into existing systems effortless.

Additionally, the JAMO D 4 speakers embody energy efficiency, equipped with features that help reduce power consumption without compromising performance. This commitment to sustainability is echoed in various aspects of their design and manufacturing processes.

In summary, the JAMO D 4 series stands out for its combination of advanced audio technologies, stylish design, and versatility. With superior bass performance, high-frequency clarity, and aesthetic appeal, the D 4 speakers are a compelling choice for anyone looking to elevate their audio experience. Whether for music, movies, or gaming, the JAMO D 4 delivers exceptional sound quality that will undoubtedly enhance your listening enjoyment.
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