Ground Zero is a German company that has been manufacturing and developing speakers for your car since 1975.

Ground Zero German company producing and developing speakers for your car since 1975.

Ground Zero is a German company that has been manufacturing and developing speakers for your car since 1975.

Ground Zero is a German company that has been manufacturing and developing speakers for your car since 1975.

Loudspeakers are resistant to salt water, suitable for installation in boats.

Power: RMS 300W / MAX 600W Resistance: 2 x 2 Ohms Sensitivity: 88 dB Installation depth: 126 mm Installation diameter: 232 mm Voice coil diameter: 50.

The HERTZ brand was created in 1998.

The HERTZ brand was created in 1998.

The HERTZ brand was created in 1998.

Ground Zero German company producing and developing speakers for your car since 1975.

Power: RMS 750W / MAX 1500W Resistance: 2 x 2 Ohms Sensitivity: 85 dB Installation depth: 163 mm Installation diameter: 234 mm Voice coil diameter: 63.

Power: RMS 1000W / MAX 2000W Resistance: 2 x 2 Ohms Sensitivity: 87 dB Installation depth: 188 mm Installation diameter: 284 mm Voice coil diameter: 76 mm PROPERTIES Extremely rigid non-pressed paper cone for maximum stiffness Wide low-loss foam surround for maximum cone excursions Concave PP dustcap with embossed HELIX logo 2 x 2 Ohms impedance allows the most flexible configuration High-temperature dual voice coil with enormous winding height for outstanding linear excursion Rock-solid diecast basket with diamond cut Removable rubber gasket Rugged butyl magnet cover with HELIX lettering for perfect magnet protection Solid push terminals for large wire gauge Extremely powerful and massive triple ferrite magnet system TECHNICAL DATA Diffuser material: paper Suspension material: foamed polyurethane Diameter of voice coil, mm: 76 Fs, Hz: 35 Qes: 0.