Subwoofer Ground Zero GZPW 15XMAX-II

Subwoofer Ground Zero GZPW 15XMAX-II

Ground Zero GZPW 15XMAX-II is a 15″ subwoofer from the Plutonium series, designed for maximum output in competitive SPL applications as well as for demanding high-end listeners. Thanks to its massive construction, aluminum cone and 4" four-layer voice coil made from CCA wire, this subwoofer can transfer extreme power into deep and precise bass. Klippel® optimization, a seven-layer 12" spider and triple-layer long-excursion surrounds ensure extreme excursion, stable operation and precise control even at the highest loads. The aluminum die-cast basket with optimized airflow provides effective cooling while massive push terminals make connecting power cables easy. GZPW 15XMAX-II is the perfect choice for anyone seeking uncompromising bass reproduction and maximum reliability.

Main specifics of the Plutonium series

In the Plutonium series you will find perhaps Ground Zero's most famous products, which focus mainly on the sound quality (SQ) segment. The exceptional level of these components is evidenced by regular successes from the prestigious EISA organization, where speakers, amplifiers and subwoofers from this series repeatedly win awards for best products in their category. Plutonium has long confirmed its position as one of the most respected high-end series on the market. In addition to top SQ products, Plutonium also offers monstrous SPL subwoofers that have set benchmarks in competitions around the world and become legends among extreme acoustic pressure fans. Thanks to extraordinarily durable components and robust construction, these subwoofers can convert enormous amplifier power into breathtaking bass with absolute control. Plutonium is thus synonymous with the absolute pinnacle of bass reproduction—whether fidelity, detail and musical emotion, or brute force and competition performance.

Main features

• 15″ high power long excursion subwoofer.
• Optimized with Klippel®.
• High-stiffness aluminum cone.
• Triple-layer long-excursion surround.
• Aluminum die-cast basket with optimized airflow.
• 4" four-layer CCA voice coil.
• Seven-layer 12" spider for extreme excursion.
• Aluminum dust cap.
• Massive push terminals for easy connection.

About the brand

Ground Zero Audio is a world-renowned car audio brand founded in 1995 in Germany. Since its inception it has built a strong market position thanks to cutting-edge technologies, precise engineering and a focus on sound quality. Ground Zero specializes in complete automotive audio solutions, from top-tier car speakers through powerful subwoofers to amplifiers aimed at 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 international competitions in the Sound Quality (SQ) and Sound Pressure Level (SPL) categories. The manufacturer uses the latest technologies in development, such as the KLIPPEL® measurement system and CEA 2006-A standards, to ensure maximum accuracy and reliability of each component. With the slogan "Respect The Music" Ground Zero Audio emphasizes its philosophy - offering listeners an authentic musical experience that faithfully captures the emotion of every track. If you are looking for top solutions, car speakers or subwoofers that stand out not only in power but also in build quality, Ground Zero Audio is the right choice for demanding customers worldwide. Ahifi is the sole exclusive importer of the Ground Zero brand for the Czech and Slovak Republics.

Catalog number	GZPW 15XMAX-II
Brand	Ground Zero
Links	Official web presentation
Subwoofer diameterThe diameter of the subwoofer is indicated on the screw holes. The overall outer diameter of the subwoofer is usually 1-2 cm wider, depending on the size category of the subwoofer. For a 30 cm subwoofer, the outer diameter incl. protective rubber 31.8 cm and in the 25 cm subwoofer it is 26.5 cm incl. protective rubbers.	380 mm (15\")
RMS powerThe RMS power of the subwoofer is the constant power of continuous use of the subwoofer. If the power is exceeded for a longer period of time, irreversible damage may occur, or to burn out the voice coil of the subwoofer.	6000 W
Sensitivity (SPL 2.83V/1m)Subwoofer sensitivity or efficiency. The sensitivity of the subwoofer is given in decibels (dB) and, in simple terms, means that the higher the value, the lower the demands on the power of the amplifier. This is a de facto rating of how a subwoofer converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the subwoofer using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the subwoofer is louder with less power. For every 3 dB increase in sensitivity, the subwoofer requires half the power to reproduce the same volume. For example, if an 88 dB subwoofer needs 300 Watts to produce a certain volume, then a subwoofer with 91 dB sensitivity needs only 150 Watts to reach the same efficiency.	88 dB
Sensitivity (SPL 1W/1m)Subwoofer sensitivity or efficiency. The sensitivity of the subwoofer is given in decibels (dB) and, in simple terms, means that the higher the value, the lower the demands on the power of the amplifier. This is a de facto rating of how a subwoofer converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the subwoofer using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the subwoofer is louder with less power. For every 3 dB increase in sensitivity, the subwoofer requires half the power to reproduce the same volume. For example, if an 88 dB subwoofer needs 300 watts to produce a certain volume, then a 91 dB subwoofer needs only 150 watts to reach the same efficiency.	85 dB
ImpedanceImpedance - measurement of electrical resistance. When buying a subwoofer, it is very important that everyone make sure that the impedance matches the amplifier that you are connecting to it. For subwoofers with a double voice coil, we recommend following the information in the advice center! Example: A 2 Ohm subwoofer cannot be connected to an amplifier that is only stable up to 4 Ohms. A 4 Ohm subwoofer can easily be used on an amplifier that is stable up to 2 Ohms. Connecting a 4 Ohm subwoofer to an amplifier that is stable up to 4 Ohms also without problems. The most common subwoofer impedance is 4 Ohm.	2 x 1 Ω
Subwoofer mounting depthThe mounting depth of the subwoofer is measured from the bottom edge of the magnet to the bottom edge of the subwoofer's metal or cast basket.	313 mm
Subwoofer voice coil diameterThe larger the diameter of the voice coil, the more load capacity the subwoofer has, in layman's terms.	100 mm
Fs - resonant frequencyFs - is the lower resonant frequency. This parameter is the de facto free air resonant frequency of the subwoofer. Simply put, it is the point at which the weight of the subwoofer's moving parts equals the force of the subwoofer's suspension while it is in motion. If you've ever seen a piece of string start to hum uncontrollably in the wind, you've seen the effect of reaching a resonant frequency. The weight of the moving parts and the stiffness of the suspension (surround and spider) are key elements that affect the resonant frequency. As a general rule, a lower Fs indicates a subwoofer that would be better at reproducing low frequencies than a subwoofer with a higher Fs. However, this is not always the case, as other important parameters of the subwoofer also enter the resulting sound.	30 Hz
Xmax + -Xmax - the maximum deflection of the subwoofer diaphragm in one direction – it is not a sum, or an abbreviation for the maximum linear deflection. The subwoofer output becomes non-linear as the voice coil begins to leave the magnetic gap.	80 mm
MassSubwoofer weight in kilograms. The weight is usually given net, i.e. without packaging.	20 kg