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ESX

Quantum QXB8

8" (20cm) enclosure subwoofer

1 Review

249,00€
249,00€ 249,00€
incl. VAT , possibly plus shipping

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Highlights

  • 8" enclosure subwoofer, 400/800 watts, 2+2 ohm impedance.
  • Compact design, 64 mm dual voice coil, protective grille.
  • Flexible impedance options, optional downfire operation.
Seen more cheaply Personal Offer
brand: ESX
Delivery time:
Available, in 2-5 days with you
Number:
Piece
Watt RMS:
400
Subwoofer Type:
bass reflex
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249,00€
249,00€ 249,00€

The Quantum QXB8 is a high-quality 8" (20cm) enclosure subwoofer from the renowned provider ESX. Its special feature lies in its compact design and the connection impedance of 2+2 Ohms, which can be flexibly operated at 4 Ohms or even 1 Ohm. The large voice coils and optimal load capacity enable high power and dynamic bass levels. This model finds the perfect spot in almost all vehicles due to its flat construction and offers an innovative downfire function with an optionally available stand.

Technical Data

  • 20 cm (8") Single-Bassreflex-System
  • Load capacity 400/800 Watts RMS/Max.
  • Impedance 2+2 Ω
  • 64 mm double swing coil
  • Robust compact housing with logo sticks
  • safety grid
  • Optional stand feet for downfire operation
  • Dimensions 46 x 33 x 18 cm
The Quantum QXB8 offers a flexible connection impedance of 2+2 ohms, which can be configured to either 4 ohms or 1 ohm. This flexibility allows you to adjust the impedance to match your amplifier and acoustic preferences. At 4 ohms, higher sound clarity can be achieved with moderate power output, while the 1 ohm setting allows for maximum power output. Consequently, the choice of impedance has direct effects on the sound quality and bass pressure you want to achieve, especially if you enjoy listening to music loudly or prefer powerful deep bass.
The 64 mm dual voice coil of the Quantum QXB8 is central to its high load capacity and sound dynamics. With the two windings, the subwoofer can absorb and convert more power, resulting in a more intense bass. Additionally, it supports flexible impedance matching by allowing the connection impedance to be varied between 1 and 4 ohms. The large voice coil also enhances thermal stability, enabling the subwoofer to operate optimally even under high load. This results in deep bass tones without distortion, ideal for dynamic music genres.
Thanks to its compact dimensions of 46 x 33 x 18 cm, the Quantum QXB8 fits into most vehicle types. The flat design allows for flexible placement, both in the trunk and under seating areas. With optional stand feet, the subwoofer can even be used in downfire operation, providing additional installation options. It is important to measure the available space in the vehicle before installation to ensure that the subwoofer can be optimally and vibration-free placed. The versatile design approach allows the subwoofer to deliver excellent bass performance even in smaller cars.
The optional feet of the Quantum QXB8 allow you to use the subwoofer in downfire operation, which means that the subwoofer plays downwards. This arrangement can be used in tight spaces or special installation locations to distribute sound more efficiently. It also ensures that the distance to the ground is optimal for clean bass reproduction. With this downfire technique, improved bass pressure is generated, as the sound is enhanced by floor reflections without requiring additional space.
The Quantum QXB8 is designed for an RMS power handling of 400 watts and a maximum power handling of 800 watts. This means that the subwoofer can operate at up to 400 watts with continuous power supply, while peak loads of up to 800 watts are possible. These values are relevant for selecting the appropriate amplifier to avoid overloads and maximize the lifespan of the subwoofer. The high power handling ensures dynamic and powerful deep bass, which is especially advantageous in modern music genres with a high bass content.
The housing of the Quantum QXB8 is designed to be robust and compact to minimize vibrations and ensure clear bass reproduction. The processing with logo sticks not only gives it an appealing design but also increases material strength. With an existing protective grille, the safety of the driver is enhanced and smooth operation is ensured. Especially for demanding bass reproductions, a stable housing is essential to avoid disturbing self-resonances and to increase the efficiency of the subwoofer.
The Quantum QXB8 integrates a single bass reflex system designed to optimally utilize the air pressure inside the enclosure. This results in extended bass reproduction by improving the efficiency of the subwoofer at low frequencies. The reflex system allows for deeper bass tones to be produced with less energy expenditure, enhancing both the performance and endurance of the subwoofer. Especially when you value powerful and precise bass reproduction, the bass reflex system of the Quantum QXB8 will exceed your acoustic expectations.
The Downfire function of the Quantum QXB8 offers a special way to operate the subwoofer facing downwards, which can improve sound distribution in the room. This method uses the floor as a resonance surface to make the sound appear more powerful and voluminous. The optional stand feet ensure the optimal distance to the ground, which is essential for efficient downfire operation. This placement is particularly advantageous in vehicles with limited storage space or unconventional installation locations, as the sound is distributed more evenly while taking up less space.
The Quantum QXB8 is characterized by its unique multifunctional design, flexible impedance of 2+2 ohms, and the option for downfire operation. Compared to other 8-inch subwoofers, it not only offers higher power handling due to the dual voice coil but also a more dynamic bass reproduction. Its compact dimensions and robust housing allow it to be integrated into tighter spaces or smaller vehicles. The ability to adjust the impedance provides compatibility with a wider range of amplifiers, making it easier to use in various audio systems.
A key highlight of the Quantum QXB8 is its versatile impedance of 2+2 ohms, which sets it apart from many competitors and offers flexible application possibilities. The subwoofer can be operated in various configurations, giving it a high degree of adaptability. The single bass reflex system also contributes to its outstanding bass reproduction by efficiently delivering lower frequencies. Furthermore, the Quantum QXB8 offers a solid and secure use in the vehicle with the optional downfire function and the robust protective grille. These technical features ensure that the subwoofer remains powerful and reliable in any application.

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Customer Reviews

Based on 1 review
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W
Werner Thünemann

Der Subwoofer ist Super verarbeitet und klang ist Top.

Product Specifications

Manufacturer

ESX

Product type

8" (20cm) enclosure subwoofer

Features

  • Highlights

    • 8" enclosure subwoofer, 400/800 watts, 2+2 ohm impedance.
    • Compact design, 64 mm dual voice coil, protective grille.
    • Flexible impedance options, optional downfire operation.

  • Uvp

    249

weight

7.5 kg

Technical data

Watt RMS Load Capacity

400

configurators

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Your advantages with Masori

Quantum QXB8 from ESX: A subwoofer for flexible use

The Quantum QXB8 offers exceptional flexibility thanks to its 2+2 ohm connection impedance. This impedance allows you to operate the subwoofer either at 4 ohms or just 1 ohm. This adaptability is ideal for combining the subwoofer with different amplifier types. Changing this impedance could, for example, make it easier or more difficult to adapt to existing audio systems, depending on the specific car system configuration.

Maximum load capacity and power: Impressive 400/800 watts

With an RMS power handling of 400 watts and a maximum power of 800 watts, the Quantum QXB8 sets new standards in its class. This power delivers powerful bass reproduction that is distortion-free, even at high volumes. Higher power could result in a more aggressive bass profile, but also carry the risk of overloading, while lower power might not provide the desired bass boost.

Large 64 mm dual voice coil: noticeable precision and control

The Quantum QXB8's 64 mm dual voice coil promises excellent control of the cone movements. This size enables more precise bass reproduction and contributes significantly to the high quality of the sound. A larger voice coil could make the control element more prominent, allowing for more finely tuned bass. A smaller voice coil, on the other hand, could noticeably reduce bass precision.

Compact design: Optimal storage and downfire function

The enclosure subwoofer impresses with its compact design, measuring 46 x 33 x 18 cm. This makes it ideal for almost any vehicle. Combined with the optional stands, you also get an innovative downfiring function that directs the bass directly into the vehicle interior. A larger design could significantly limit installation options or restrict it to certain vehicle types.

Special logo sticks and protective grilles: Robust design

The integrated logo sticks and protective grille not only provide protection but also give the Quantum QXB8 an aesthetic appearance. These design elements enhance the subwoofer's longevity. Without these protective mechanisms, the subwoofer could be more exposed to external influences, which could compromise sound quality over time.

Single bass reflex system: Harmonious sound environment

The Quantum QXB8's single bass reflex system ensures optimal reproduction of the low frequencies. This design efficiently amplifies bass reproduction while keeping the cabinet size small. A double bass reflex system could emphasize more bass, but at the expense of clarity. A closed system, on the other hand, would have less airy bass but a deeper fundamental sound.

Connection options for versatile applications

Thanks to its connection configuration, the Quantum QXB8 is versatile. Installation is possible via various points on the amplifier, ensuring optimal integration into existing car hi-fi systems. Limited connection options could limit installation options, while too many connections could lead to confusion during configuration.

Masori: Your partner for car hi-fi

Benefit from the Masori Lowest Price Guarantee to always get the Quantum QXB8 at the best possible price. Get support with on-site installation in Frankfurt (Oder) or learn more through our expert support FAQ & Help . Get inspired in the Audio Blog to unlock the full potential of your sound system. The Quantum QXB8 from ESX proves that compact dimensions and powerful bass performance go hand in hand. Its technical specifications make it an ideal choice for virtually any vehicle and many speaker configurations.