Ground Zero Competition GZCK 165 XSPL 6.5" (16.5cm) midrange driver

Name: Ground Zero Competition GZCK 165 XSPL 6.5 inch midbass driver
Brand: Ground Zero
Price: 79.0 EUR
Availability: InStock
Rating: 5.0 (4 reviews)

4 Reviews

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Ground Zero Competition GZCK 165 XSPL 6.5" (16.5cm) midrange driver

4 Reviews

Mid-woofer, 100 watts RMS, 4 ohms, fiber-reinforced membrane.
38 mm CCA voice coil, low-resonance steel basket, long-throw foam surround.
Incl. protective grille, solder connection, SPL speaker.
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Competition GZCK 165 XSPL by Ground Zero

Discover the Competition GZCK 165 XSPL, a highly effective woofer/midrange speaker from Ground Zero. With a diameter of 6.5 inches, it stands out for its powerful performance. The distinctive speaker features a rigid paper cone and a long-throw CCAW voice coil, delivering impressive sound quality. With a power handling of up to 250 watts, a frequency response from 50 Hz to 4 kHz, and a resonance frequency of 56.8 Hz, this woofer/midrange sets new standards in its class. It comes with a protective grille and is ready to use right away. Special features include its fiber-reinforced paper cone, low-resonance steel basket, and convenient solder terminal function.

Features

6.5 inch woofer/midrange
38 mm CCA voice coil
Fiber-reinforced paper cone
Long-throw foam surround
Low-resonance steel basket
Paper dustcap
Includes protective grille
Solder terminal

Specifications

Type: SPL woofer/midrange speaker
Diameter: 165 mm
Power handling (RMS/max.): 100 / 250 watts
Impedance: 4 ohms
Frequency response: 50 Hz – 4 kHz
Voice coil: 38 mm CCA
Mounting diameter: 145 mm
Resonance frequency (Fs): 56.8 Hz

Frequent questions about Competition GZCK 165 XSPL

Was sind die technischen Hauptmerkmale des Competition GZCK 165 XSPL?

The Competition GZCK 165 XSPL features a 38 mm CCAW voice coil and a fiber-reinforced paper diaphragm. With a diameter of 165 mm and a resonance-optimized steel basket, it offers a power handling capacity of up to 250 watts as well as a frequency response of 50 Hz to 4 kHz. The speaker is a woofer/midrange speaker, equipped with a long-stroke design for deep and precise bass reproduction. The resonance frequency is at 56.8 Hz, which, in combination with the long-stroke foam surround, ensures efficient sound radiation. These features make it ideal for music lovers who value sound quality and volume.

Wie groß ist der Durchmesser des Lautsprechers und welche Auswirkung hat das?

The Competition GZCK 165 XSPL has a diameter of 6.5 inches or 165 mm. This size allows for a balanced combination of deep and mid frequencies, perfectly suited for use in vehicles where space is often limited. A solid diameter like this optimizes air displacement through the diaphragm movement, resulting in improved bass reproduction. The installation diameter is 145 mm, ensuring that the speaker fits into standard mounting cavities. Especially in vehicle interiors, this scale ensures even sound distribution and an ultimate sound experience at any volume.

Welche Belastbarkeit bietet der Ground Zero GZCK 165 XSPL Lautsprecher?

The Ground Zero Competition GZCK 165 XSPL speaker has an RMS power handling of 100 watts and a maximum power handling of 250 watts. This high power handling allows for excellent sound reproduction even at higher volumes, without compromising audio quality. The robustness of the design ensures that dynamic peaks and longer listening sessions are handled effortlessly. The speaker is ideal for HiFi enthusiasts seeking high performance and clarity in their sound output without having to sacrifice reliability. The power handling is capable of delivering impressive results, especially with music pieces featuring deep frequencies.

Wie ist der Frequenzgang des Competition GZCK 165 XSPL?

The frequency response of the Competition GZCK 165 XSPL ranges from 50 Hz to 4 kHz. This spectrum covers a wide range from deep bass tones to mid frequencies. Especially for music lovers who value detailed bass reproduction and clearly defined mids, this speaker offers excellent acoustic performance. The low starting frequency response makes it ideal for strong bass output, while the upper limit ensures that vocals and instruments are reproduced flawlessly. This bandwidth is optimally tuned to play both electronic music and classical pieces with high clarity.

Welche Impedanz hat der Competition GZCK 165 XSPL und warum ist das relevant?

The Competition GZCK 165 XSPL has an impedance of 4 ohms. This impedance is classic and compatible with most amplifiers and audio systems, making the speaker versatile. A 4-ohm impedance allows for maximum power to be drawn from amplifiers, enabling increased volume and sound dynamics. It is important that the amplifier power is optimally matched to the speaker resistance to fully utilize its power and avoid damaging the speaker due to overload. Choosing the right impedance is crucial to prevent damage and ensure the best audio quality.

Was macht die Papiermembran des GZCK 165 XSPL einzigartig?

The paper diaphragm of the GZCK 165 XSPL is made from a fiber-reinforced material that has been specifically designed to combine stiffness and lightness. This combination results in an extremely precise and dynamic sound, which is why this speaker particularly excels with music that has strong rhythmic elements. The paper diaphragm is known for providing natural sound qualities by producing smooth yet accurate sound waves that are less disturbed by self-resonances. Especially when you like to listen to music loudly, the diaphragm reliably delivers clear mids and impressive bass reproduction without losing detail.

Welche Rolle spielt der Langhub der Competition GZCK 165 XSPL?

The long stroke of the Competition GZCK 165 XSPL determines how far the diaphragm can move to displace air and thus generate sound. This feature allows for deeper, more powerful bass notes, as more air can be moved compared to conventional speakers. The design not only promotes bass reproduction but also ensures a balanced representation of lower frequencies by minimizing distortion. In combination with the foam surround, the long stroke handles both sudden and sustained sound peaks without loss of sound fidelity. This results in a dynamic and vibrant audio representation, ideal for demanding musical passages.

Welche Vorteile bietet der resonanzarme Stahlkorb?

The resonance-optimized steel basket of the GZCK 165 XSPL ensures a stable and vibration-free construction that significantly contributes to audio quality. A steel basket minimizes unwanted cabinet vibrations that could lead to distortions in the sound image. This results in clearer and more precise reproduction, especially at higher volumes, where resonances can become clearly audible. Additionally, a stable steel basket increases the durability of the speaker, as it better absorbs physical impacts. This basket is therefore particularly advantageous for audiophiles who expect high sound fidelity and resilience in their vehicle without compromising performance.

Wie beeinflusst die Resonanzfrequenz die Leistung des Lautsprechers?

The resonance frequency of the GZCK 165 XSPL is 56.8 Hz, which is perfectly optimized for bass reproduction. The resonance frequency is the frequency at which the speaker begins to vibrate and provides the most efficient bass reproduction. This specification means that bass-heavy music pieces are reproduced in their full intensity, without the help of equalizers or amplifiers. A well-tuned resonance frequency also helps to expand the dynamic range of the speaker and ensures that it delivers consistent performance even across different music styles. It is a crucial factor for sound fidelity across all frequency ranges.

Ist der GZCK 165 XSPL einfach zu installieren?

The Competition GZCK 165 XSPL is relatively easy to install due to its installation diameter of 145 mm and the solder connection feature. These standard size characteristics allow it to be integrated into most common vehicle types, as long as the installation space provides the necessary room. The speaker's feet should be sufficiently stable and flat for secure mounting to minimize unwanted vibrations. During installation, care should be taken to ensure that the cable connections are precisely soldered to guarantee a permanent and secure electrical connection to the audio system. Protective grilles are already included and provide additional protection against damage.

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 9070 reviews

Anonym

Massive 4 inch voice coil!

Massive 4 inch voice coil and ton of power handling, great venting around voice coil, also this vega series has black voice coils. Price/value ratio is very high with vega series.

Vega 2025 Edition V15DV2/4

12/15/2025

Anonym

Massive MiniMonster!

What a Minimonster, 18Liter ported box,tuned to 32hz and plays very loud and even good on lows. Even when i'm underpowering and only giving 350-400watts max. I really love this 6,5 monster, also the aluminium basket is very strong and solid and has great venting for the voice coil. Having rubber surround and carbon fiber cone just makes this even more indestructible

Vega 2025 Edition V65DV2/4

12/15/2025

Anonym

I love this 6,5 minimonster

What a Minimonster, 18Liter ported box,tuned to 32hz and plays very loud and even good on lows. Even when i'm underpowering and only giving 350-400watts max. I really love this 6,5 monster, also the aluminium basket is very strong and solid and has great venting for the voice coil. Having rubber surround and carbon fiber cone just makes this even more indestructible

Vega 2025 Edition V12DV2/4

12/15/2025

Artiomrusanovschi

👌

👌 superr

Machete Fight MF-15R

12/13/2025

Franco

Super guter Subwoofer

Super Subwoofer mit extrem tiefem Bass. Die Kabel sind dick und hochwertig verarbeitet. Es gibt nichts zu beanstanden. Absolut empfehlenswert.

CBP1000

12/09/2025

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