Ground Zero GZIC 165.2HE speakers

Ground Zero GZIC 165.2HE Speakers

Ground Zero GZIC 165.2HE speakers belong to the basic Iridium series, which focuses on speakers optimized for connection to factory car radios. With a low impedance of 3 Ohms and high sensitivity, they deliver noticeably stronger and more dynamic performance even without the use of an external amplifier. The mid-bass driver utilizes an HQPP cone with a 3D structure, ensuring excellent rigidity while maintaining low weight. The result is a fast transmission of mid and bass frequencies with a natural character. The steel basket with anti-resonance treatment prevents unwanted vibrations and contributes to a clean sound even at higher volumes. A sturdy phase plug with high thermal resistance aids in a wide angle of mid-frequency dispersion, leading to better spatial sound imaging. The 19 mm tweeter made of mylar material handles the highs, complementing the overall system performance with a non-aggressive character. Compact crossovers for the tweeters are integrated into the wiring, simplifying installation without complex connections. Protective grilles are included, which is especially appreciated by those replacing factory speakers without covers. Ground Zero GZIC 165.2HE represents an ideal entry into Ground Zero's world of sound, combining easy installation, high efficiency, and solid construction.

About the Ground Zero Iridium Series

The Iridium series represents the entry-level products of Ground Zero, which are highly popular among customers seeking quality sound at an affordable price. It offers a wide range of speakers, amplifiers, and subwoofers, designed for both everyday listening and more demanding SPL applications. This series includes component and coaxial speakers with favorable mounting depth and optimization for factory car radios, affordable amplifiers with useful features and equipment, as well as subwoofers, including powerful SPL variants and "street" models for regular use. Subwoofers are available not only as standalone drivers but also in tuned passive and active boxes, suitable for simple and effective installation. The Iridium series thus offers an ideal solution for those who want to significantly improve factory audio without major investments.

Main Features

• 2-way component speaker system of the Iridium series.
• High sensitivity and reduced impedance for optimal operation on factory car radios.
• 19 mm mylar dome tweeter.
• Optimized using Klippel®.
• HQPP cone with 3D structure.
• Phase plug aids in wide mid-frequency dispersion angle.
• Durable rubber surround.
• Low-resonance steel basket.
• Ferrite magnet.
• Compact crossovers for tweeters with easy installation.
• Protective grilles included.

About the Brand

Ground Zero Audio is a globally recognized brand in the car audio field, founded in 1995 in Germany. Since its inception, it has built a strong market position thanks to top-notch technologies, precise engineering, and a focus on sound quality. Ground Zero specializes in comprehensive car sound solutions, from top-quality car speakers, through powerful subwoofers, to amplifiers designed for either SPL or SQ. Ground Zero products are known for their durability, high performance, and faithful music reproduction, as confirmed by numerous awards from prestigious global competitions in the Sound Quality (SQ) and Sound Pressure Level (SPL) categories. The manufacturer employs the latest technologies in development, such as the KLIPPEL® measurement system and CEA 2006-A standards, to ensure maximum accuracy and reliability of every component. With the slogan "Respect The Music," Ground Zero Audio emphasizes its philosophy - to offer listeners an authentic musical experience that truly captures the emotions of every track. If you are looking for top-quality solutions, car speakers, or subwoofers that excel not only in performance but also in craftsmanship, Ground Zero Audio is the right choice for demanding customers worldwide. Ahifi is the exclusive importer of the Ground Zero brand for the Czech and Slovak Republics.

Catalog number	GZIC 165.2HE
Brand	Ground Zero
Links	Official web presentation
Speaker typeCoaxial speakers: Coaxial speakers are characterized by a so-called all-in-one design. The tweeter and mid-bass speaker are in one basket. The advantage is simpler assembly, but thanks to the connection or proximity of the bands in one speaker, the sound quality will usually be reduced. As a rule, in the middle of the mid-bass speaker, there is a tweeter whose voice coil works in the second air gap of the common magnetic circuit. The three-way coaxial speaker consists of a mid-bass speaker, a center speaker and a separate tweeter in the front on a special beam. Component Speakers: Component speakers are characterized by a division into individual frequency bands, treble + mid-bass + or. bass band. The individual speakers can be placed completely separately, which results in a better sound and acoustic performance. In the vast majority of cases of component speakers, an external crossover is also supplied, which divides the treble, middle / mid-bass, and into the three-band the bass band or allows setting the decibel level of the tweeter (e.g. +2 dB, 0 dB, -2 dB), steepness (e.g. 6dB/Oct. 12dB/Oct.) or active or bi-amp connection.	Component 2-way
RMS powerRMS speaker power is the constant power of the entire system, not just one speaker or one side. This is also the performance of continuous use of the speakers. If the RMS power is exceeded for a long time, the speakers may be irreversibly damaged!	100 W
Max. (maximum performancePeak performance , which the speaker can play for a moment (approx. 0.5 s), for example when hitting drums in a song. If the max power is exceeded, the speakers will usually be damaged!	150 W
Sensitivity (SPL 2.83V/1m)Sensitivity, sensitivity or efficiency of the speaker. Speaker sensitivity is given in decibels (dB) and simply put, the higher the value, the lower the demands on the amplifier's power. This is a defacto rating of how a speaker converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the speaker using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the speaker is louder with less power. For every 3 dB increase in sensitivity, the speaker requires half the power to reproduce the same volume. For example, if an 88 dB speaker needs 100 Watts to produce a certain volume, then a speaker with a sensitivity of 91 dB needs only 50 Watts to reach the same volume.	94 dB
Sensitivity (SPL 1W/1m)Sensitivity, sensitivity or efficiency of the speaker. Speaker sensitivity is given in decibels (dB) and simply put, the higher the value, the lower the demands on the amplifier's power. This is a defacto rating of how a speaker converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the speaker using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the speaker is louder with less power. For every 3 dB increase in sensitivity, the speaker requires half the power to reproduce the same volume. For example, if an 88 dB speaker needs 100 Watts to produce a certain volume, then a speaker with a sensitivity of 91 dB needs only 50 Watts to reach the same volume.	91 dB
ImpedanceImpedance - measurement of electrical resistance. When buying speakers, it is important to make sure that the impedance matches the amplifier or car stereo you are using. Example: A 2 Ohm speaker cannot be connected to an amplifier that is only stable up to 4 Ohms! A 4 Ohm speaker can easily be used with an amplifier that is stable up to 2 Ohms. The most common speaker impedance today is 3 - 4 Ohm.	3 Ω
Frequency rangeThe ability of the speakers to play a signal from the lowest frequency to the highest, or the speaker's ability to faithfully reproduce sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural.	75 - 20000 Hz
The diameter of the mid-bass speakerWe state the diameter of the speaker as the diameter of the entire speaker, not including the mounts, when smaller speakers (87, 100, 130 mm) have extra mounts. Some speakers are oval and there the dimension is given in inches, always the shortest side to the longest side. One inch is approx. 2.5 cm.	165 mm (6.5")
Installation depth of the mid-bass speakerThe installation depth of the speaker is measured from the bottom edge of the magnet to the bottom edge of the tin, plastic or cast speaker basket, or speaker bearing surfaces.	68 mm
Mid-woofer diaphragm materialThe material that was used for the speaker diaphragm. Don't be afraid of the paper, it surprisingly has a very natural and high-quality sound and, thanks to the surface treatment, it can withstand moisture without any problems.	Polypropylene reinforced with 3D structure
Resonant frequency of the mid-bass speaker	76 Hz
Tweeter dome diameterThe net diameter of the dome (diaphragm) of the tweeter.	19 mm
Tweeter dome materialThe shell material that was used in the manufacture of the tweeter.	Mylar
Frequency crossover included in the packageThe crossover is an important part of defacto all loudspeakers. A crossover usually contains different resistor values, coil sizes, and capacitor types that fundamentally modify the sound. We describe below what the turnouts are for. Component Speakers: A crossover is part of every quality component speaker system. Its task is to ensure the distribution of frequencies that the amplifier produces in the entire acoustic spectrum of frequencies so that each of the speakers receives only that part of the band that it can optimally play in terms of efficiency and minimal distortion. Coaxial speakers: In most cases, coaxial loudspeakers have a simple crossover (6dB/Oct.) formed by a capacitor at the tweeter.	Yes
Cover grids included in the packageOriginal cover grilles in speaker packaging.	Yes
Price forIf the price is for a pair, the package always includes 2 pieces of everything, e.g. 2x mid-bass, 2x tweeter and 2x crossover.	Pair