Electronics D 4SUB, SubWoofer, Amplifier, Auto On/Off

(Sub)Woofer

The 8” woofer features a vented magnet system and a Ø 38 mm / 1½” aluminium voice coil former. The 4-layer voice coil is 28 mm / 1.1” long allowing linear excursions up to +/- 10 mm / 0.4” – and still with >70% of the B*L product available!

The magnet system features a vented pole piece in order to avoid over/under pressure behind the dust cap (mechanical damping) when the cone is moving.

The cone is made from air-dried paper. Normally when making paper cones, the water is pressed out of the cone simply because letting it air-dry is way too time consuming.

However, there is a quite significant advantage from spending the extra time. When letting the paper air- dry, the cone is approximately double thickness compared to a pressed cone. Still the low weight is maintained, but due to the increased cone thickness, it is simply more rigid – an extremely important feature for a long throw woofer that is going to be fed by a 400 W amplifier . . .

The foam surround allows fast movement at its low frequency working range.

Electronics (D 4SUB)

Amplifier

The D 4SUB features a 400 Watt Class D amplifier that operates at a highly efficient 85%. This means that 85% of the power consumption is dedicated to the speaker, and only 15% is dissipated as heat.

It is manufactured from SMD components. The advantages are that signal paths are kept very short and that the electronics is much more resistant to the shocks and vibrations that arise inside a subwoofer. The results are better sound and a prolonged lifetime for the subwoofer.

Auto On/Off

Forget all about the subwoofer once it is connected as this feature automatically sets the subwoofer in stand-by after approximately 20 minutes without input signal.

The “start up” sensitivity is 3mV and it stays on as long as the signal is above 1mV.

Phase and Cut-off controls

Place the subwoofer where it is most convenient - the controls ensure that the sound from the subwoofer can be adjusted to blend seamlessly with the sound from the rest of the speakers.

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.