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The Ground Zero GZTC 165.2X is a 6.5 inch (165 mm) 2-way component speaker kit rated at 100W RMS (150W max), pairing a structured HQPP cone woofer with a 19 mm silk dome tweeter. Its Euro-DIN basket and 3 ohm design suit standard 16.5 cm door positions.
Also available: the smaller GZTC 130.2X 5 inch kit and the GZTC 165.3X-ACT 3-way kit for active setups.
Key specifications
- Size: 165 mm / 6.5″
- Power handling: 100W RMS, 150W max
- Impedance: 3 ohm
- Sensitivity: 90 dB
- Frequency response: 50 Hz – 22 kHz
- Tweeter: 19 mm / 0.75″ silk dome
- Crossover: passive, 6 and 12 dB/oct, 5500 Hz
- Mounting diameter: 142.5 mm / 5.61″
- Mounting depth: 68 mm / 2.68″
165 mm / 6.5″ 2-way component speaker system
A solid mid-range component kit from Ground Zero, built around a structured HQPP cone woofer and 19 mm silk dome tweeter for clean, detailed sound in a standard Euro-DIN fitment.
Features
- 2-way component speaker system
- HQPP cone with 3D structure
- Rubber surround
- Euro-DIN basket
- Resonance free steel basket
- High efficient 3 ohms version
- 19 mm / 0.75″ silk dome tweeter
- Ferrite motor
- 6/12 dB/oct passive crossover
- Incl. protection grill
Explore the full range in Ground Zero.
Specification
| Model | 2-way component speakers |
|---|---|
| Diameter | 165 mm / 6.50″ |
| Power handling | (RMS/max.) 100 / 150 Watts |
| Impedance | 3 ohms |
| Efficiency | 90 dB |
| Frequency Response | 50 Hz – 22 kHz |
| Tweeter | 19 mm / 0.75″ silk dome |
| Cone | HQPP cone with 3D structure |
| Mounting Ø | 142.5 mm / 5.61″ |
| Mounting depth | 68 mm / 2.68″ |
| Crossover | 6 & 12 dB/Oct |
| Crossover frequency | 5500 Hz |
What's Included
- GZTC 165.2X
Ground Zero
About the Ground Zero GZTC 165.2X
From our tech experts at CEN
Ground Zero 6.5 inch component speakers, with separate tweeters for mounting where you will actually hear them, rated at 100w RMS.
Who it suits
Drivers building a proper front stage and happy for tweeters to be mounted separately, which usually means a professional fit.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker, and these repay an amplifier. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Ground Zero range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Ground Zero
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: How deep is the GZTC 165.2X?
A: The woofer needs 68 mm of mounting depth and a 142.5 mm mounting diameter, in a Euro-DIN basket.
Q: Does the GZTC 165.2X have a passive crossover?
A: Yes. It uses a passive crossover with 6 and 12 dB/oct slopes and a crossover frequency of 5500 Hz.
Q: Will the GZTC 165.2X run from my head unit?
A: Yes. Its high-efficiency 3 ohm design and 90 dB sensitivity help it get more from a head unit. An amplifier lets it use its full 100W RMS rating.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
