Ground Zero Radioactive GZRF 6.5SQ 6.5" (16.5cm) coaxial speaker

Name: Ground Zero Radioactive GZRF 6.5SQ 6.5 inch coaxial speakers
Brand: Ground Zero
Price: 101.15 EUR
Availability: OutOfStock
Rating: 5.0 (8 reviews)

8 Reviews

Max, Mikael and 53k+ customers already with Masori sound upgrade

Ground Zero Radioactive GZRF 6.5SQ 6.5" (16.5cm) coaxial speaker

8 Reviews

Power of 100 watts RMS and maximum power of 140 watts.
Efficient impedance of 3 ohms, optimal for clear sound quality.
Including crossover 6 dB/oct, high pass filter for tweeter.
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Radioactive GZRF 6.5SQ by Ground Zero

The Radioactive GZRF 6.5SQ is a 2-way coaxial speaker system from Ground Zero. This 6.5 inch coaxial speaker model stands out with features such as an aluminum cone, rubber surround, and a Nomex centering spider. The low-resonance steel basket combined with a highly efficient 3 Ohm design guarantees you an outstanding listening experience. The system is protected by a tweeter and overload protection as well as an included protective grille. The sound is precisely tuned with the supplied crossover for the 25 mm silk dome tweeter.

Features

6" (16.5cm) coaxial speaker
2-way coaxial speaker system
Aluminum cone
Rubber surround
Nomex centering spider
Low-resonance steel basket
Highly efficient 3 Ohm design
25 mm silk dome tweeter
Ferrite magnet
Tweeter and overload protection
Includes protective grille
Includes crossover (capacitor) for the tweeter

Specifications

Design: 2-way coaxial speaker system
Power handling (RMS/max.): 100 / 140 watts
Impedance: 3 Ohm
Sensitivity: 91 dB
Frequency response: 50 Hz – 24 kHz
Tweeter: 25 mm silk dome
Installation diameter: 142.5 mm
Installation depth: 68 mm
Crossover: 6 dB/octave high-pass filter

Ground Zero Radioactive GZRF 6.5SQ Datenblatt

Datenblatt öffnen

Frequent questions about Radioactive GZRF 6.5SQ

Welche Besonderheiten hat die Aluminium-Membran des Radioactive GZRF 6.5SQ?

The aluminum membrane in the Radioactive GZRF 6.5SQ from Ground Zero is characterized by its high stability and light weight, allowing for optimal sound transmission. These properties lead to a clear and uncolored sound. Aluminum as a material eliminates resonance-related distortions and offers outstanding stiffness compared to conventional materials. This membrane is housed in a resonance-optimized steel basket, which further enhances the acoustic properties by damping unwanted vibrations. The combination of these features results in excellent sound reproduction, which particularly demonstrates its strengths at higher volumes.

Wie beeinflusst die 3 Ohm Ausführung die Leistungsfähigkeit des GZRF 6.5SQ Lautsprechers?

The 3 Ohm version of the Radioactive GZRF 6.5SQ ensures higher efficiency in operation, which means that the speaker draws more power from an amplifier. This results in a louder and more powerful sound. One advantage of this lower impedance is the improved control over the speaker at high levels. Due to the effectively lower resistance, more current flows, which drives the membranes with greater precision, making the sound image appear more dynamic. In systems designed for lower impedances, this speaker fully realizes its sound potential.

Welche Vorteile bietet die Nomex Zentrierspinne beim GZRF 6.5SQ Lautsprecher?

The Nomex centering spider in the Radioactive GZRF 6.5SQ ensures precise positioning of the voice coil, thereby minimizing distortions. Nomex, known for its high strength and temperature resistance, supports the long-term stability of the speaker, especially when high power is required. Its structure provides optimal mechanical properties that prevent distortions at large diaphragm excursions. This means that the acoustic output accuracy remains stable even at high power levels, leading to a clear and defined sound, particularly during intense musical passages.

Welche Rolle spielt die Frequenzweiche im Radioactive GZRF 6.5SQ Lautsprechersystem?

The crossover in the GZRF 6.5SQ is crucial as it separates the frequency range and assigns it to the corresponding components of the 2-way system. It acts as a high-pass filter with 6 dB/octave, which withholds low frequencies from the 25 mm silk dome tweeter and optimizes its operating range. This creates clear, undistorted highs by allowing only defined frequencies for the tweeter. Additionally, the crossover protects the tweeter from overload and specifically aligns the frequency response to provide a balanced experience between low and high frequencies.

Welche Schutzmechanismen sind im Radioactive GZRF 6.5SQ integriert?

The Radioactive GZRF 6.5SQ speaker offers comprehensive protection mechanisms, including high-frequency and overload protection, to preserve the components at high volume. These protective measures safeguard the coaxial system from sound-damaging distortions or extreme sound pressure situations. The included protective grille additionally serves to physically secure the speaker membrane against external influences, such as impact or dust exposure. These integrated safety mechanisms ensure that functionality and sound characteristics remain unchanged even under intense operating conditions, such as high volume during concerts or events.

Wie lautet der Frequenzgang und der Wirkungsgrad des GZRF 6.5SQ?

The Radioactive GZRF 6.5SQ from Ground Zero offers an impressive frequency response of 50 Hz to 24 kHz, ensuring comprehensive reproduction from deep bass to the highest treble. This bandwidth ensures that no detail or tonal nuance is lost. The efficiency of 91 dB means that the speaker is capable of producing remarkable sound volume even with lower amplifier output. A high efficiency is particularly advantageous as it allows for high acoustic performance and clarity even with lower power amplification, making it ideal for both musical and cinematic content.

Welche Tipps gibt es für die Installation des Radioactive GZRF 6.5SQ Lautsprechers?

When installing the GZRF 6.5SQ, it is important to pay close attention to the installation dimensions. The speaker requires an installation diameter of 142.5 mm and a mounting depth of 68 mm to fit correctly in the designated space. It is recommended to measure the existing speaker system in vehicles to ensure compatibility. The manufacturer Ground Zero does not provide any direct mounting materials for this purpose, so it is necessary to purchase suitable screws and brackets that fit the specific vehicle model on the market. Adhering precisely to these dimensions ensures proper function and provides an optimal sound experience.

Welche Materialien werden im Hoch- und Tieftöner des GZRF 6.5SQ verwendet?

In the Radioactive GZRF 6.5SQ, two primary materials compete, specifically designed for different frequency ranges: The 25 mm silk domes of the tweeter, known for their lightweight yet robust structure, deliver smooth and clear high frequencies. This material is ideal for detailed and precise highs. In contrast, the woofer is dominated by an aluminum diaphragm, optimized for processing low frequencies due to its stiffness and lightness. This choice of material results in powerful bass sounds with minimal distortion, providing a comprehensive and high-quality listening experience across all musical genres.

Wie sorgt das Schutzgitter des Radioactive GZRF 6.5SQ für Langlebigkeit?

The protective grille included with the Radioactive GZRF 6.5SQ protects the speaker membranes from mechanical damage that could occur due to external physical influences or foreign objects. It prevents dust, dirt, or unwanted touches from affecting the operation and sound quality of the speaker unit. The grille itself is designed to allow sound to pass freely without compromising the sound character. At the same time, it provides effective barrier protection, thereby extending the lifespan of the speaker and maintaining consistent performance under various operating conditions.

Wie wird die Klangbalance im GZRF 6.5SQ gefördert?

The sound balance of the Radioactive GZRF 6.5SQ is achieved through the cleverly constructed 2-way coaxial configuration, which orchestrates a dialogue between the tweeter and woofer. The integrated crossover precisely separates the frequency range and ensures that each component receives exactly the audio signals for which it was optimized. Additionally, the resonance-optimized steel basket supports clear sound reproduction by minimizing disruptive vibrations. This finely tuned construction ensures that no frequency dominates, resulting in a harmonious, balanced sound that is ideal for various musical styles.

Herstellerinformation/verantwortliche Person

Ground Zero GmbH
Erlenweg 25
85658 Egmating, Germany

Tel +49 (0)8095 873 830

E-Mail: info@ground-zero-audio.com

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.

X10 v3

11/18/2025

tatazz

Est arrivé à la maison très rapidement

Est arrivé à la maison très rapidement 👌🏽

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11/13/2025

Anonym

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Geht echt gut und leicht zum einstellen

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11/12/2025

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.

RS-YS12

11/10/2025

SPYRIDON D.

Bought again

Bought again. Great price, fast delivery, nice !

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Arthur Mol

Perfect sound, I bough 2 pairs for the door and

Perfect sound, I bough 2 pairs for the door and the difference between these and the stock ones are huge

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Très bonne qualité
Envoie rapide et soigné
Je recommande

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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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