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ESX

Quantum QXB8A

8" (20cm) Active Enclosure Subwoofer

449,00€
449,00€ 449,00€
incl. VAT , possibly plus shipping

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Highlights

  • 8" active subwoofer, 400/800 watts, Class D amplifier.
  • Integrated amplifier, bass boost, wired remote control.
  • Optional feet, robust construction, versatile installation options.
Seen more cheaply Personal Offer
brand: ESX
Delivery time:
Available, in 2-5 days with you
Number:
Piece
Watt RMS:
400
Subwoofer Type:
Active enclosure subwoofer
Amplifier Type:
Class D
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ESX-Quantum QXB8A-8" (20cm) Aktiv-Gehäusesubwoofer-masori-kaufen
449,00€
449,00€ 449,00€

The Quantum QXB8A is an 8" (20cm) active enclosure subwoofer from the provider ESX. This integrated subwoofer with Class D amplifier combines power and compactness in an efficient design. Unlike many competing products, ESX relies on state-of-the-art amplifier technology that allows for an output power of up to 400 Watts/RMS. With the additional remote control, you have control over the bass directly from your driver's seat. Additionally, the optional stand feet enable a downfire operation. The Quantum QXB8A is an attractive choice for anyone looking for a powerful yet easy-to-handle subwoofer.

Technical Data

  • 20 cm (8") active subwoofer system (bass reflex)
  • Integrated Class D Amplifier (Power4 Active Module)
  • 1 x 400/800 Watt RMS/Max.
  • Low-pass 40-120 Hz with 12 dB slope
  • Phase switch 0°/180°
  • Bass Boost 0-6 dB @ 45 Hz
  • Cinch Low Water Inlet
  • high-level entrance
  • Automatic switch-on function (DC or signal)
  • Start-stop capable, 5 sec./ up to 7 volts
  • EPS PRO with 10R / 150R / 600R (switchable)
  • Input sensitivity 15 or 40 volts (switchable)
  • 3-fold limiter function, clipping LED
  • Bass level remote control
  • Robust compact housing with logo sticks
  • safety grid
  • Optional stand feet for downfire operation
  • Dimensions 48 x 33 x 18 cm
The Quantum QXB8A offers an impressive output power of up to 400 Watts RMS, achieved through an integrated Class D amplifier. The use of this amplifier technology allows for efficient and powerful sound output, which is particularly convincing with loud music. The value of 400 Watts RMS represents the continuous power that the subwoofer can provide, making it an excellent choice for anyone who appreciates strong bass lines. Additionally, the Quantum QXB8A can reach a maximum power of up to 800 Watts, making it particularly dynamic and powerful.
The dimensions of the Quantum QXB8A are a crucial factor during installation. With a size of 48 x 33 x 18 cm, it fits into many types of vehicles while still being compact enough not to waste valuable space. Knowing the exact measurements is especially important when it comes to placing the subwoofer in the trunk or under a seat. Its low height makes it versatile, and the optional ability to use it with stand feet in downfire operation increases its flexibility.
The Quantum QXB8A offers several adjustment options that allow for sound customization to personal preferences. The low-pass filter is adjustable between 40-120 Hz with a slope of 12 dB, allowing for precise frequency separation adjustment. Additionally, there is a phase switch with options of 0°/180°, which optimizes the synchronization of the subwoofer with other speakers in the vehicle. The bass boost is adjustable between 0-6 dB @ 45 Hz to enhance the bass as desired.
The automatic power-on function of the Quantum QXB8A is a feature that significantly enhances user comfort. Two modes are available: DC control or signal mode. In DC mode, the subwoofer activates as soon as it registers sufficient voltage. The signal mode, on the other hand, turns on the subwoofer when an incoming audio signal is detected. Both options provide flexibility and are particularly useful for almost immediate readiness for operation when starting the vehicle without manual intervention. This function is also linked to the vehicle's start-stop capability and operates within a voltage range of 5 to 7 volts.
The Quantum QXB8A offers versatile connectivity options to meet the needs of various vehicle audio systems. It features a line-level RCA input for connection to common car radios with preamp outputs. Also integrated is a high-level input that allows for direct connection to speaker outputs, in case the car radio does not provide preamp outputs. This makes the subwoofer flexible and ready for use in different vehicle setups and simplifies integration into existing systems. Additionally, the bass level cable remote control allows for volume adjustment from inside the vehicle.
The installation of the Quantum QXB8A in the car requires a precise understanding of the dimensions and space conditions. With dimensions of 48 x 33 x 18 cm, it is crucial to find the suitable spot for this device, whether in the trunk or behind the seats. The installation can be enhanced by using the optional stand feet, which allow for downfire operation. Additionally, the electrical connection must be carried out correctly to utilize the automatic power-on function and the full potential of the Class D amplifier. The included remote control should also be mounted in an easily accessible location.
The Quantum QXB8A is equipped with several protection features to ensure safe operation. It has a 3-fold limiter that protects the subwoofer from overload by reducing the audio signal in time. A clipping LED indicates when the signal is too strong and distortion is imminent. This is particularly useful to ensure optimal performance at all times and to protect the system from damage. These functionalities are crucial to ensure the longevity and performance of the subwoofer in any application scenario.
Thanks to its flexible connection options and compact design, the Quantum QXB8A is compatible with a variety of vehicle models. Integration is possible via the high-level input, allowing connection to car radios without a special preamp output. This universal applicability makes it a suitable additional component for numerous car brands, without the need for specific adjustments. A look into the vehicle documentation helps in understanding the appropriate connection points, which facilitates the integration of the subwoofer into the existing audio system.
The Class D amplifier of the Quantum QXB8A offers numerous advantages over conventional amplifier technologies. This technology is more efficient as it generates less heat and thus does not require elaborate cooling mechanisms. This allows for a more compact design of the active subwoofer. The highly efficient signal processing also results in a clearer and more precise sound image while maintaining low energy consumption. Due to this efficiency, the subwoofer can achieve consistently high performance without overheating, which is particularly advantageous in tight installation situations.
The downfire operation of the Quantum QXB8A refers to the placement method of the active subwoofer, where the speaker is directed downwards. This configuration allows for more efficient distribution of bass within the vehicle interior, resulting in a more spacious and richer sound experience. The optional stand feet included in the package enable this type of placement and ensure that the subwoofer stands stable while the sound is optimally projected. The space conditions in the car should be taken into account to ensure the best possible implementation.

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Product Specifications

Manufacturer

ESX

Product type

8" (20cm) active enclosure subwoofer

Features

  • Highlights

    • 8" active subwoofer, 400/800 watts, Class D amplifier.
    • Integrated amplifier, bass boost, wired remote control.
    • Optional feet, robust construction, versatile installation options.

  • Uvp

    449

weight

8.5 kg

Technical data

Watt RMS Load Capacity

400

configurators

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Your advantages with Masori

Performance spectrum: Buy Quantum QXB8A active subwoofer with 400 watts RMS

The Quantum QXB8A from ESX delivers exceptionally powerful bass performance with 400 watts RMS, transforming any car into a soundscape. Integrated Class D amplifier technology ensures this power is delivered efficiently with minimal energy loss. The solid construction guarantees long-lasting reliability, further enhanced by Masori's expert support (FAQ & Help ). The compact design of the 8-inch active subwoofer allows for easy integration into virtually any vehicle. With the optional wired bass level control, control always remains at your fingertips. Experience the Masori Lowest Price Guarantee and buy the Quantum QXB8A online for the best bass performance at the lowest price.

Technical use: Integrated Class D amplifier for efficient operation

The Quantum QXB8A uses an integrated Class D amplifier, known for its high efficiency and low thermal loss. Class D technology means you benefit from an amplifier that consumes little power while still delivering high performance. This is especially important for use in cars, where energy efficiency and heat dissipation are critical. ESX's amplifier technology ensures optimal use of the 400 watts RMS, which can be challenging, especially in compact enclosures, but is masterfully solved here.

Bass control: Low-pass filter from 40-120 Hz with precise slope

The Quantum QXB8A's integrated low-pass filter operates between 40 and 120 Hz and, with a 12 dB slope, ensures that the bass can be precisely tailored to your preferences. This filtering option allows for detailed adjustment of the frequency spectrum by allowing only specific frequencies to pass through. This ensures that the bass is ideally emphasized for every music genre and that the sound environment in the vehicle is not distorted.

Phase switch: Adjustment from 0° to 180° for optimal bass

The phase switch, which can be adjusted between 0° and 180°, allows you to use the subwoofer in customized setups. The switch allows you to adjust the bass phase to perfectly harmonize with the other speakers in the car, preventing bass cancellation. A phase of 0° can be used for balanced systems, while 180° helps minimize unwanted interference in a phase-inverted setup.

Bass Enhancement: Efficiently optimize with bass boost of 0-6 dB at 45 Hz

A special highlight of the Quantum QXB8A is the Bass Boost, which increases the bass by 0 to 6 dB at 45 Hz. This allows for individual reinforcement of lower frequencies, making the bass even more powerful without losing its sonic integrity. These adjustment options are especially important when the bass reproduction is muffled or suboptimal due to external influences.

Versatile connection options: RCA low-level input and high-level input

The Quantum QXB8A's connectivity features a low-level RCA input and a high-level input, making it compatible with virtually any source. This flexibility facilitates integration into existing systems, regardless of the connection types offered by your car stereo or amplifier. Both input types are designed for diverse user scenarios, ensuring broad compatibility with car hi-fi systems.

Automatic switch-on function: Innovative by DC or signal

Thanks to its automatic power-on function, activated by a DC signal or an audio signal, the Quantum QXB8A offers convenience and energy savings. This feature ensures seamless and hassle-free activation of the subwoofer as soon as you start your car or play music, reducing power consumption when the amplifier is not needed.

Adjustment and protection: 3-way limiter function with clipping LED

A built-in triple limiter function contributes to the safety and longevity of the Quantum QXB8A. This feature ensures that the subwoofer always operates within a safe range by preventing overload and excessive clipping. The clipping LED alerts you to potential clipping, allowing you to make adjustments in real time to protect the solar systems of your sound performance.

Downfire operation: Optional stands for universal installation

The optional downfiring stands expand the application possibilities of the Quantum QXB8A. This adjustment allows the subwoofer to be positioned so that the bass radiates directly into the vehicle floor, which can significantly improve bass reproduction depending on the room acoustics. This flexibility enhances the sound performance, especially in special installation positions or when space constraints in the vehicle are changing.

Robust construction: Compact housing for tough everyday use

Measuring 48 x 33 x 18 cm, the Quantum QXB8A's compact cabinet design ensures easy integration and durability. The robust cabinet features stylized logo studs and a protective grille that not only contributes to the aesthetic appeal but also ensures mechanical stability and protection against external influences. The solid construction helps it handle powerful bass pressure without compromising sound quality.

EPS PRO: Input sensitivity variable with 15 or 40 volts

The switchable input sensitivity between 15 and 40 volts underscores the adaptability of the Quantum QXB8A. This allows for fine tuning to various signal sources, further supporting the subwoofer's excellent performance in both simple and more complex systems. This adjustment option maximizes the sonic power that can be extracted from the available signal and can result in sonic precision even in demanding setups.

EPS PRO: Versatile impedance matching with switchable resistance

The ESX Quantum QXB8A offers switchable resistance adjustment of 10R / 150R / 600R through EPS PRO, allowing for flexible impedance matching. This feature provides significant advantages when integrating the subwoofer into a wide variety of systems to ensure maximum possible power transfer. This approach ensures optimal performance under all conditions, which is especially important in non-standard or complex systems. Interested in more details? Explore the extensive topics in our Audio Blog or feel free to contact our expert support FAQ & Help . For professional installation, visit our on-site installation center in Frankfurt (Oder) .