GROUND ZERO
Ground Zero Audio Ultra
Ground Zero Audio Ultra
Couldn't load pickup availability
T-30
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.
150 watts max
30 mm / 1.18″ ultra-high-end soft dome tweeter with precision-coated textile diaphragm and CNC manchined aluminum chamber
- 30 mm / 1.18″ ultra-high-end tweeter
- Tightly-tolerated technical parameters
- Vented voice coil former reducing distortion
- Lightweight CCA voice coil improving efficiency
- Particular dome for pressure balancing
- Machined aluminum chamber with wave diffuser
- GZ-design wave-guide face plate
- High-efficient neodymium motor
- Documented final technical inspection
- Wooden box packaging / in matching pairs
| Model |
Ultra-high-end tweeter |
|---|---|
| Diameter |
30 mm / 1.18″ |
| Power Handling (RMS/max.) |
100 / 150 Watts |
| Impedance |
4 Ohms |
| Efficiency |
82 dB |
| Frequency Response |
1000 Hz – 26 kHz |
| Voice Coil |
CCA |
| Membran Layout |
coated textile |
| Mounting Ø |
60 mm / 2.36″ |
| Mounting Depth |
41 mm / 1.61″ |
| Resonance Frequency (Fs) |
500 Hz |
k-165
Ultra 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.
160 watts max
165 mm / 6.5″ ultra-high-end midwoofer with airflow-optimized spokes and lightweight carbon-fleece cone
- Ultra-high-end 165 mm / 6.5” midwoofer
- Tightly-tolerated technical parameters
- Lightweight carbon-fleece sandwich cone
- High-excursion linear moving rubber surround
- Vented voice coil former reducing distortion
- Round CCA wire voice coil increasing power handling
- Airflow-optimized aluminum cast spokes
- Documented final technical inspection
- Wooden box packaging / in matching pairs
- GZ ULTRA 165-GRILL protection grills available separately
| Model |
Ultra-high-end midwoofer |
|---|---|
| Diameter |
165 mm / 6.50″ |
| Power Handling (RMS/max.) |
100 / 160 Watts |
| Impedance |
4 Ohms |
| Efficiency |
87 dB |
| Frequency Response |
45 Hz – 5000 Hz |
| Voice Coil |
32,5 mm / 1.28″ |
| Membran Layout |
Carbon-fleece sandwich |
| Mounting Ø |
147 mm / 5.79″ |
| Mounting Depth |
67 mm / 2.64″ |
| Resonance Frequency (Fs) |
43 Hz |
m-80
Ultra
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.
Ultra 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.
110 watts max
80 mm / 3.15″ ultra-high-end midrange speaker with airflow-optimized basket and high-tech Kevlar® cone
- 80 mm / 3.15″ Ultra-high-end midrange speaker
- Tightly-tolerated technical parameters
- High-tech Kevlar® cone
- Linear moving NBR surround
- Vented voice coil former reducing distortion
- Round CCA wire voice coil increasing power handling
- Optimized motor and voice coil ventilation
- Documented final technical inspection
- Wooden box packaging / in matching pairs
- Incl. high-quality mounting ring
| Type | Ultra-high-end midrange speaker |
|---|---|
| Diameter | 80 mm / 3.15″ |
| Power handling (RMS/max.) | 70 / 110 Watts |
| Impedance | 4 Ohms |
| Efficiency | 88 dB |
| Frequency response | 150 Hz – 15 kHz |
| Voice coil | CCA |
| Cone | Kevlar® |
| Mounting Ø | 76.5 mm / 3.01″ |
| Bolt circle Ø | 87 mm / 3.43″ |
| Mounting depth | 42 mm / 1.65″ |
| Resonance frequency (Fs) | 127 Hz |
