Ground Zero GZ Reference K-165
The Ground Zero GZ Reference K-165 is a 165 mm (6.5″) pure high-end SQ midwoofer from the GZ Reference series. Its high-tech diamond structured aluminum cone with high damping support cone, hybrid neodymium/ferrite motor and GZ-design aluminum cast basket with unique ventilation are optimized using the renowned Klippel measurement system for uncompromising sound quality.
Key Features
- Pure High-End Midwoofer: 6.5″ / 165 mm SQ midwoofer built for reference-level sound quality
- Diamond Structured Cone: High-tech diamond structured aluminum cone with high damping support cone
- Hybrid Motor: High-efficient hybrid motor with neodymium and ferrite magnets
- Aluminum Ring: Aluminum ring for impedance linearizing
- Aluminum Cast Basket: GZ-design aluminum cast basket offering unique ventilation
- Gold-Plated Terminal: Gold-plated GZ-design screw terminal
- Copper Coloured Magnet Cover: Aluminum magnet cover in copper finish
- Klippel Optimized: Optimized using the renowned Klippel measurement system; 1 pair per package
Technical Specifications
- Type: Pure high-end midwoofer
- Diameter: 165 mm / 6.5″
- Power Handling: 110 W RMS
- Impedance: 4 Ohms
- Efficiency: 85 dB
- Frequency Response: 50 Hz – 4.5 kHz
- Voice Coil: 37 mm / 1.46″ copper
- Cone: Aluminum
- Mounting Diameter: 144 mm / 5.67″
- Mounting Depth: 70 mm / 2.76″
- Resonance Frequency (Fs): 46 Hz
The perfect midwoofer for audiophiles building a reference-grade active sound quality system, ideally paired with the GZ Reference M-80 midrange and T-26 tweeter.















