Subwoofer in a Ground Zero GZRB 20SPL-ACT box

Subwoofer in a Box Ground Zero GZRB 20SPL-ACT

Ground Zero Radioactive GZRB 20SPL-ACT is an active 8" (20 cm) subwoofer in a bass reflex enclosure, known for its outstanding features. The passive bass reflex enclosure with a bass tunnel offers excellent sound performance. The enclosure is made of robust MDF board, and the amplifier itself delivers 280 W RMS power. The net volume is 21 liters, and the dimensions are 440 x 240 x 280 mm.

Main Features of the High-End Ground Zero Radioactive Series

The Ground Zero Radioactive series offers a wide range of exceptional, highly efficient speakers and subwoofers for everyday and SPL use. During development, GROUND ZERO focused on natural and dynamic audio reproduction of digitally compressed music. In addition to some powerful amplifiers, the series includes extremely small amplifiers for limited space environments.

Main Features

• High-quality bass reflex SPL subwoofer in an active enclosure (with integrated amplifier).
• Durable 200mm subwoofer used GZRW 8XSPL..
• Optimized flow ventilation.
• Sturdy MDF enclosure.
• Reinforced paper cone.
• Strong protective bars against subwoofer damage.
• Remote control included.

About the Brand

Ground Zero Audio is a globally recognized brand in car audio, founded in 1995 in Germany. Since its inception, it has established a strong market position thanks to cutting-edge technology, precise engineering, and a focus on sound quality. Ground Zero specializes in complete car audio solutions, from high-end 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 confirmed by numerous awards from prestigious global competitions in Sound Quality (SQ) and Sound Pressure Level (SPL) categories. The manufacturer uses the latest technologies such as the KLIPPEL® measuring 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 of offering 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	GZRB 20SPL-ACT
Brand	Ground Zero
Links	Official web presentation
RMS power of the amplifier	280 W
Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers.	D
The diameter of the subwoofer usedThe diameter of the subwoofer that is installed in the active box.	200 mm (8\")
High level inputThe high-level input on the active subwoofer enables connection directly to the speakers in the car without purchasing an external high/low converter. Use in the case of mounting an active subwoofer on the original car radio.	Yes
Phase rotation optionPhase shift is a linear electronic oscillator that produces a sinusoidal output. It consists of an inverting part of the amplifier such as a transistor. The feedback network "shifts" the phase at the output of the amplifier by 180 degrees to the oscillation frequency and gives positive feedback. The Phase shift filter produces a phase shift that increases with increasing frequency. This is usually used when the subwoofer sub-assembly is out with the magnet, or when two amplifiers are connected externally. Phase Shift is also used with active speaker wiring, where the time shift of the speakers is set. The point is that the subwoofer does not play the bass late, and for this reason better amplifiers offer this phase reversal option.	Yes
Remote control included in the packageSome models of active subwoofers also have wired remote controls in the package, which on the one hand connect to the active box, and on the other hand you have a potentiometer that you can place anywhere in the cabin. A common place to place the remote control is under the steering wheel. The advantage is the regulation of power, and therefore volume, depending on driving conditions and the mood of the crew in the car.	Yes
Option to purchase a remote controlIf the active subwoofer has a remote control input.	Yes
Protective gridProtective grids or bars, as protection against mechanical damage to the subwoofer.	Yes
Loudspeaker type	Bass reflex
What is the baffle made of?Active subwoofers can be made of MDF board, hardened plastic, sheet metal, aluminum or a combination of different materials.	MDF
Active subwoofer dimensions	440 x 240 x 280 mm