ESX Quantum QXB8A 8" (20cm) Active Enclosure Subwoofer

Name: ESX Quantum QXB8A 8 Inch Active Enclosure Subwoofer | Masori
Brand: ESX
Price: 449.0 EUR
Availability: InStock

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ESX Quantum QXB8A 8" (20cm) Active Enclosure Subwoofer

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

€449,00

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Quantum QXB8A by ESX

The Quantum QXB8A is an 8-inch active enclosure subwoofer from the brand 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 enables an output power of up to 400 watts RMS. With the additional wired remote control, you have control over the bass directly from your driver's seat. Additionally, the optional stands allow for 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 inch) active subwoofer system (bass reflex)
Integrated Class D amplifier (Power4 active module)
1 x 400/800 watts RMS/Max.
Low pass 40-120 Hz with 12 dB slope
Phase switch 0°/180°
Bass boost 0-6 dB @ 45 Hz
RCA low-level input
High-level input
Automatic turn-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-stage limiter function, clipping LED
Bass level wired remote control
Robust compact enclosure with logo stickers
Protective grille
Optional stands for downfire operation
Dimensions 48 x 33 x 18 cm

ESX Quantum QXB8A Datenblatt

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Frequent questions about Quantum QXB8A

Wie ist die Ausgangsleistung des Quantum QXB8A?

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.

Welche Abmessungen hat der Quantum QXB8A?

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.

Welche Einstellmöglichkeiten bietet der Quantum QXB8A?

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.

Wie funktioniert die automatische Einschaltfunktion des Quantum QXB8A?

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.

Welche Konnektivitätsoptionen hat der Quantum QXB8A?

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.

Wie installiert man den Quantum QXB8A im Auto?

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.

Welche Schutzfunktionen bietet der Quantum QXB8A?

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.

Kann der Quantum QXB8A mit verschiedenen Automarken genutzt werden?

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.

Welche Vorteile bietet der Class D Verstärker im Quantum QXB8A?

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.

Was ist der Downfire-Betrieb beim Quantum QXB8A?

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.

Herstellerinformation/verantwortliche Person

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

Let customers speak for us

from 9059 reviews

Jean François Tedesco

Alpine tube 12 bazooka , Un sacré caisson de basses ,

Un sacré caisson de basses , j'ai eu un 46 cm killer 454 de l'époque année 90 , qui tapait vraiment bien , mais ce tube est bien plus fort et plus ample, toutes les basses passent sans problème, avec une télécommande à réglage multiples taramps eq bass , et un ampli Machete de masori , le couple est parfait, personnellement j'en ai deux tubes et ça donne énormément, avec l'ampli 2 x 530 en 4 ohms . Parfois le plus simple est bien meilleur et plus durable .

SWT-12S4

11/29/2025

Bartosz Erber

X-10 v3 d2

Hallo. Sehr freundlicher Kundenservice und schnelle Auftragsabwicklung. Der Lautsprecher ist brandneu und unbenutzt. Ich habe ihn vor einiger Zeit gekauft, aber erst kürzlich das Gehäuse fertiggestellt. Die Parameter entsprechen den Herstellerangaben: 42,5 Liter Nettovolumen, abgestimmt auf 32 Hz und 21 mm starkes Sperrholz. Ich hatte noch nie einen 10-Zoll-Lautsprecher und wusste nicht, was mich erwartet, aber das Ergebnis hat meine kühnsten Erwartungen übertroffen. Der Bass aus einem so kleinen Lautsprecher in einem so kleinen Gehäuse ist einfach unglaublich. Um den X-10 zu kaufen, habe ich meinen DD 712f in einem 70-Liter-Gehäuse verkauft, und der war ein Volltreffer. Der Sundown ist in jeder Hinsicht besser. Ich kann diesen Lautsprecher und den Händler, bei dem ich ihn gekauft habe, wärmstens empfehlen. Beste Grüße.

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11/18/2025

tatazz

Est arrivé à la maison très rapidement

Est arrivé à la maison très rapidement 👌🏽

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Anonym

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Geht echt gut und leicht zum einstellen

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Georges, Alexander, Vainohoarii NAGLE

Très satisfaisant.

Bonjour, je reçu le colis bien emballé.
Je recommande vivement, la livraison est gratuite et rapide, je recommanderai sûrement encore chez Masori.

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11/10/2025

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Bought again

Bought again. Great price, fast delivery, nice !

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Perfect sound, I bough 2 pairs for the door and

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Ich habe den Woofer in meinem Skoda Octavia 3 mit Canton Soundsystem eingebaut.
Der Einbau war Plug & Play, alles passt perfekt ohne Anpassungen.
Im Vergleich zum originalen Canton Subwoofer spielt dieser deutlich stärker, präziser und mit mehr Druck.
Ich kann den Woofer jedem empfehlen, der mehr Bass aus dem Canton-System herausholen möchte – lohnt sich absolut!

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