Triple subwoofer in the Ground Zero GZIB 3.250SPL box

Triple Subwoofer in Box Ground Zero GZIB 3.250SPL

Discover the Iridium GZIB 3.250SPL - a unique 10-inch (25cm) enclosure subwoofer from Ground Zero. This model, equipped with three 25cm Iridium SPL subwoofers in a sealed enclosure, stands out for its excellent sound quality. With a recommended amplifier that can deliver approximately 2000 W at a 1 Ω load, this space-saving enclosure provides a compelling musical experience. Interestingly, the subwoofer enclosure is designed not to take up the entire trunk, allowing it to be implemented in almost any family car.

Main Features of the Ground Zero Iridium Series

The Ground Zero Iridium series represents the basic line from the Ground Zero brand. It offers many useful features and amazing performance. This series includes a range of affordable amplifiers, speakers, and subwoofers for everyday use and SPL purposes. The subwoofers are available as standalone for custom applications or in loaded passive and active enclosures.

Main Features

• Bass reflex enclosure with 3x 25cm SPL subwoofers GZIW 10XSPL.
• Front bass reflex.
• Recommended amplifier power 2000 W at 1 Ω.
• MDF enclosure.
• Terminal connection.
• 50 mm voice coil (copper).
• Membrane construction - reinforced paper with honeycomb structure.
• Power 1500 W RMS.
• Connection impedance 1.4 Ω.
• Net volume 60 l.
• Dimensions (W x H x D1/D2) 83 x 34 x 32/24 cm.

About the Brand

Ground Zero Audio is a globally recognized brand in the car audio sector, founded in 1995 in Germany. Since its inception, it has established a strong position in the market thanks to cutting-edge technologies, precise engineering, and a focus on sound quality. Ground Zero specializes in complete car audio solutions, from top-notch car speakers to powerful subwoofers and amplifiers designed for either SPL or SQ. Ground Zero products are known for their durability, high performance, and faithful music reproduction, as evidenced by numerous awards from prestigious global competitions in the Sound Quality (SQ) and Sound Pressure Level (SPL) categories. The manufacturer utilizes state-of-the-art technologies, 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 - to offer listeners an authentic musical experience that faithfully captures the emotions of every track. If you are looking for top-notch solutions, car speakers, or subwoofers that excel not only in performance but also in build quality, Ground Zero Audio is the right choice for demanding customers worldwide.

Catalog number	GZIB 3.250SPL
Brand	Ground Zero
RMS powerThe RMS power of the subwoofer is constant power. This is also the performance of continuous use of the subwoofer. If you exceed the power for a longer period of time, irreversible damage or subwoofer voice coil burning! You can tell if the subwoofer is overloaded by the vibration of the subwoofer membrane.	1500 W
Max. (maximum performancePeak performance , which the subwoofer can play momentarily (approx. 0.5 s), for example when hitting drums in a song. If the maximum power is exceeded, damage can quickly occur or subwoofer voice coil burning!	2100 W
The diameter of the subwoofer in the box	250 mm (10")
ImpedanceImpedance - measurement of electrical resistance. When buying a subwoofer, it is very important that everyone make sure that the impedance is compatible with 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 with 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. 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 with an amplifier that is stable up to 2 Ohms. The most common impedance of subwoofers is 1 x 4 Ohm.	1.4 Ω
Loudspeaker typeThe closed enclosure is characterized by a simple construction. Closed enclosures are usually smaller than bass-reflex enclosures, and a special damping fleece is used for their damping. A closed baffle has the advantage of preventing an acoustic short between the front and back radiation of the subwoofer diaphragm. The disadvantage is that the closed enclosure raises the natural resonance frequency of the used subwoofer and thereby also increases the lower limit frequency. This is because the back side of the diaphragm is forced to compress and dilute the air inside the enclosure when the subwoofer is radiating in a closed enclosure. This adds to the inherent stiffness of the subwoofer's oscillation system the stiffness of the air in the closed enclosure. This causes an increase in the stiffness of the oscillating system and thus an increase in the resonant frequency of the entire system: subwoofer -> loudspeaker. The increase in resonant frequency for a given subwoofer is greater, the smaller the volume of air in the closed enclosure. The relatively small volume of air in the closed enclosure acts on the subwoofer as an acoustic spring when radiating the back side of the membrane into the enclosed enclosure. USE: Mainly for quality bass listening in the entire band with an emphasis on detail and accurate reproduction in the lower band. Pros and cons: + pure reproduction + small closets + easier tuning - low level of efficiency in deep bass - loudness only at the cost of enormous deflection of the diaphragm - a significant acoustic pressure cannot be expected The bass reflex enclosure is designed in the same way as a closed enclosure, but it also has a so-called bass reflex mouthpiece, or "bass reflex". Needle foam is used to dampen bass reflex enclosures. USE: The ideal use is in cases where the listener wants to achieve a high volume and a good sound pressure level. It is the best compromise between sound quality and performance and is also the most commonly used Pros and cons: + good efficiency in deep bass + a small deflection of the membrane is enough for a large volume - reproduction less accurate than with closed enclosures	Bass reflex
What is the baffle made of?Subwoofer enclosures are usually made of 18-22 mm MDF board or pressed chipboard. Due to its higher strength, MDF board is a better material than ordinary chipboard.	MDF
Dimensions of the boxEnclosure dimensions are given as height, width and depth, which is often longer at the bottom edge than at the top, due to the bevel of the rear wall.	83 x 34 x 32 / 24 cm