Speaker Components

ULTRA speakers are designed for the most demanding music lover.

Carefully built by hand with the best materials and selected in pairs, they are delivered in fine wooden boxes.

The mid-bass driver ULTRA K-165 uses a high-tech fabric cone “Made in Germany” in conjunction with linear suspension and a narrow-tolerance copper voice coil with a linearized NEO motor. Built in a filigree aluminum basket for optimal air flow, these are the ingredients for outstanding neutrality and sound quality.

The tweeter ULTRA T-30 with its 30mm coated silk dome is characterized by a particularly low resonance frequency and extreme neutrality. The linearized NEO magnet system with the complex rear ventilation of the cone in the solid aluminum housing enables the wonderfully spatial and precise audio reproduction with an extremely wide frequency range.

REFERENCE speakers are designed for demanding high-end music lovers. Accurately hand built in Europe, selected in corresponding pairs and delivered in classy wooden boxes. Midbass and midrange speakers are made from hand-coated, pressed paper cones and hand-spooled copper voice coils, inserted into manually machined aluminum parts of the basket, forming the basis for outstanding high-end sound quality. The tweeter features a particularly low resonance frequency. The usable wide frequency range of the hand-coated silk dome thus enables astonishingly spatial and precise audio reproduction.

In order to compile an individual sound quality setup at highest level, the speakers of the PLUTONIUM line are available in pairs as components separately.
In order to compile an individual sound quality setup, the speakers of the NUCLEAR line are available in pairs as components separately.
Using outstanding materials for the cones and accurate tuning, these speakers provide an amazing sound quality performance. The drivers are available for active setups, separately.
For some years customers were missing matching loudspeaker components and systems belonging to the GROUND ZERO HYDROGEN series to be combined with its amplifiers and subwoofers. Based on a particularly designed aluminum cast basket the engineers have realized a powerful 6.5” midwoofer with a strong ferrite motor and oversized CCA voice coil. In combination with a vented silk dome tweeter equipped with a coupled chamber and a passive crossover, the new HYDROGEN series 2-way system is born for customers looking for an extraordinary performance. The loudspeakers are available separately for active setups, as well.
Some components of the RADIOACTIVE loudspeaker systems are also available separately.
The TITANIUM line includes a wide range of coaxial and component speaker systems in the favorable price segment and a separately available tweeter.
The IRIDIUM line includes a wide range of coaxial and component speaker systems in the favorable price segment and a separately available tweeter.
For high-frequency and mid-range reproduction, the COMPETITION series offers a variety of high-efficient far-field compression tweeters and various midrange speakers. The latter can be used in free-air applications as well as in horn or bass reflex systems.
Speaker components of the COMPETITION PRO series are specially designed for a long distance to the listener and are particularly suitable for show and demonstration purposes with high sound pressure levels.

Competition Series

Realistic Stage Atmosphere

The experience of a real concert atmosphere or club feeling needs professional high SPL levels to be achieved.
This however, requires very special and powerful speakers as well as amplifiers. GROUND ZERO´s development department doesn´t make any compromise,
whenever the purpose of the product is that clear. Because of this, a COMPETITION product is the right choice for demanding customers with high SPL level expectations.

GZCT 25SQL

25 mm / 1" high power silk dome tweeter

GZCT 25M-SPL

High-performance 25 mm / 1" dome tweeter

GZCT 28M-SPL

High-performance 28 mm / 1.1" dome tweeter

GZCT 0500X

25 mm / 1" aluminum dome compression tweeter

GZCT 500IV-B

25 mm / 1" aluminum dome compression tweeter

GZCT 3500X-S

25 mm / 1" aluminum dome compression tweeter

GZCT 3500X-B

25 mm / 1" aluminum dome compression tweeter

GZCT 4000X

44.5 mm / 1.75" aluminum dome compression tweeter

GZCT 5000SPL

44.5 mm / 1.75" titanium dome compression tweeter

GZCT 5000SPL-B

44.5 mm / 1.75" titanium dome compression tweeter

GZCM 8.0SPL

200 mm / 8" high power midrange speaker

GZCM 10.0SPL

250 mm / 10" high power midrange speaker

GZCM 6.5NEO-DC

165 mm / 6.5" high power midrange speaker

GZCM 8.0NEO-DC

165 mm High-Power Mitteltonlautsprecher

GZCM 6.5XSPL

165 mm / 6.5" high power midrange speaker

GZCM 8.0XSPL

200 mm / 8" high power midrange speaker

GZCK 165XSPL

165 mm / 6.5" SPL midwoofer

GZCK 200XSPL

200 mm / 8" SPL midwoofer

GZCK 250XSPL

250 mm / 10" SPL midwoofer

GZCW 10SPL

25 cm / 10" High-Power midwoofer

Competition Pro Series

The PRO Series

The COMPETITION PRO series marks the very top level of electrically and mechanically possible power handling, nowadays.
These drivers have been designed especially for long distance open show and demonstration performances at very high SPL level as well as
for the more and more popular “Pancadão” open-air stages featuring a wall of speakers, a competition trend coming from Brazil.

Ground Zero Audio Produktkategorie Lautsprecher Komponenten Ground Zero Audio Produktkategorie subwoofer

GZCT 19N-PROX B

25 mm / 1" high end compression tweeter with neodymium motor

GZCT 20N-PRO

25 mm / 1" high end compression tweeter with neodymium motor

Hydrogen Series

High-Grade Technology

Products of the HYDROGEN series match with the demands of highly sophisticated customers.
Amazing performance, great sound quality and high SPL whenever required.
The subwoofers have been developed to handle a huge amount of input power reaching extremely high bass levels, to be used successfully even under competition conditions.
A matching 2-way component speaker system and a number of MINI amplifiers with compact dimensions for limited installation space complete this famous GROUND ZERO line-up.

GZHT 25S

25 mm / 1" silk dome tweeter

GZHM 80

80 mm / 3.15" SQ midrange loudspeaker

GZHK 165

165 mm / 6.5" high power midwoofer

Iridium Series

Top Performance @ Entry Level

Representing the entry level of GROUND ZERO, the IRIDIUM line offers a lot of useful features and an amazing performance. The range contains a variety of affordable amplifiers, speakers and subwoofers for the daily use and for SPL purpose.
These are available as single drivers for custom-built applications as well as in loaded passive and active enclosures.

GZIK 165SPL

165 mm / 6.5" SPL midwoofer

Nuclear Series

Ultimate Performance

With several particular features of the High End PLUTONIUM line, GROUND ZERO managed to position the NUCLEAR line products at a lower price level. Nevertheless, the amazingly sounding speakers are partly “Made in Germany”.
The subwoofers are predestined for high level audio setups as well as for SPL competition while massive multi-channel and impressively powerful mono amplifiers deliver excellent performance.

GZNT 28SQ

28 mm / 1.1" silk dome tweeter and coupled chamber

GZNM 80SQ-K

80 mm / 3.15" SQ midrange speaker with supreme sound quality

GZNK 165SQ-K

165 mm / 6.5" SQ midwoofer with supreme sound quality

Plutonium Series

High-End Experience

The products of the PLUTONIUM line are suitable for either ultimate SPL level or high-end sound quality. To achieve one of these targets, exceptional materials and technologies are applied during the development.
The technical, electrical and mechanical skills of the resulting products convince not only during worldwide SPL competitions but also High End enthusiasts with outstanding audio reproduction ability.
Starting from the market release, the subwoofers have set benchmarks in all SPL competitions around the world and have been awarded for best performance by numerous test magazines.

GZPT 28SX Chrome Edition

28 mm / 1.1" high end tweeter - Chrome Edition

GZPT 28SQ

28 mm / 1.1" high end tweeter

GZPM 80SQ-C

80 mm / 3.15" high end midrange speaker

GZPK 165SQ-C

165 mm / 6.5" high end midwoofer

Radioactive Series

Advanced Dynamics

The RADIOACTIVE line offers a wide range of exceptional high efficient speakers and subwoofers for daily and SPL use. During the development GROUND ZERO focused especially on natural and dynamical audio reproduction of digitally compressed music.
Apart from some powerful amplifiers, the line contains extremely small amplifiers for limited space environments.

GZRT 25SQ

25 mm / 1" coated silk dome tweeter

GZRM 80SQ

80 mm / 3.15" sound quality midrange speaker

GZRK 165SQX

165 mm / 6.5" high power midwoofer

Reference Series

Pure High-End Sound Quality

The EISA awarded REFERENCE components obtain the highest attention and care during a long lasting development.
Without any compromise, each component is selected from the best ones available on the market.
Highest production quality and the most accurate supervision of every single part ensure not less than perfect performance, ultimate sound quality and workmanship for the highest demanding customer.
Emphasizing the high-end status of the REFERENCE products, each amplifier, speaker and subwoofer is finally certified by GROUND ZERO´s in-house quality department and delivered in a classy, logo-branded wooden box handmade in Germany.

GZPT Reference 28EVO

28 mm / 1.1" high end tweeter

GZPT Reference 28 Gold Edition

28 mm / 1.1" high end tweeter - Gold Edition

Titanium Series

Premium Quality

The products of the TITANIUM line combine premium quality and high efficiency.
A wide range of dedicated speakers meet most of the customer´s need.
The amplifiers are equipped with sophisticated technology and encased by a posh heatsink with brushed titanium color surface.
Especially for trucks, GROUND ZERO offers two models of the TITANIUM amplifier line-up as a 24-Volt version.

GZTT 20S

20 mm / 0.79" silk dome tweeter

GZTM 100NEO

100 mm / 4" midrange speaker with neodymium motor

GZTK 165

165 mm / 6.5" high power midwoofer

Uranium Series

Amazing Sound Quality

Each product of the URANIUM line-up has been developed carefully to fulfill the demands of music enthusiasts with high audiophile expectations at a reasonable price level.
Applying all of Ground Zero´s sound quality competition experience while tuning the product details carefully, results in emotional and amazing audio reproduction.
The distinguished amplifiers point out the main purpose by their designation: SQ beyond the average!

GZUT 28SQX

28 mm / 1.1" silk dome tweeter

GZUF 60SQ-A

60 mm / 2.36" sound quality full range speaker

GZUM 80SQ

80 mm / 3.15" sound quality midrange speaker

GZUM 55SQ

55 mm SQ midrange speaker

GZUK 165SQ

165 mm / 6.5" sound quality midwoofer

Ultra Series

REFERENCE ULTRA SERIES – Ultra-High-End

After collecting detailed experience in SQ performance and general in-car audio reproduction for more than 25 years during the development of loudspeakers, subwoofers and amplifiers for highly demanding customers and having launched a wide range of car audio products used for sound quality competitions all over the world, GROUND ZERO had started to take advantage of all these gathered skills devising a very new and super high-end product line. For the most sophisticated demands, GROUND ZERO introduces an extraordinary two-channel amplifier and matching loudspeakers now! REFERENCE ULTRA series products are developed by highly attentive engineers from England, Sweden and Germany creating products for the most demanding customers without accepting any compromise in overall quality and SQ performance.

GZ ULTRA T-30

<p>Ultra-high-end 30 mm / 1.18" tweeter</p>

GZ ULTRA M-80

Ultra-high-end 80 mm / 3.15” midrange speaker

GZ ULTRA K-165

<p>Ultra-high-end 165 mm / 6.5” midwoofer</p>

Accessories Series

This category includes some optionally available products to be used additionally at the installation of loudspeakers.

GZTH 25-28B

Optional tweeter housing

Car Specific Series

CAR SPECIFIC Upgrade for the OEM sound system

Most OEM speaker systems cannot completely satisfy the expectations of sophisticated customers. Especially the basic equipment leaves a lot of space for improvements of dynamics and sound quality.
Installing car specific aftermarket speakers is a simple way to enhance the audio system.
GROUND ZERO´s line of CAR SPECIFIC solutions consists of various components designed for upgrading the OEM audio systems of modern cars easily.

GZCS K-165VW

Car specific 165 mm / 6.5" midrange speaker

GZCS K-200VW

Car specific 200 mm / 8" midrange speaker

GZCS T-25VW

Car specific 25 mm / 1" tweeter

GZCS 100MB-C

Car specific 100 mm / 4" center speaker

GZCS 100MB-S

Car specific 100 mm / 4" surround speaker

GZCS T-25S

25 mm / 1" tweeter