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The Ground Zero GZIC 400FX is a compact 4 inch (100 mm) 2-way component speaker system rated at 60W RMS (100W max), with a coated paper cone, 19 mm silk dome tweeter and a mounting depth of only 30 mm. It is built for tight spaces where installation depth is limited.
For 6.5 inch openings, see the GZIC 165.2 component kit.
Key specifications
- Size: 100 mm / 4″ 2-way component
- Power handling: 60W RMS, 100W max
- Impedance: 4 ohms
- Efficiency: 89 dB
- Frequency response: 70 Hz - 20 kHz
- Tweeter: 19 mm / 0.75″ silk dome
- Mounting depth / cutout: 30 mm / 93 mm
- Crossover: 2x HP / 2x LP
GZIC 400FX: 100 mm / 4″ 2-way component speaker system
A compact 4″ component kit built for tight spaces, delivering clean, detailed sound at 60W RMS without needing a deep installation depth.
Features
- 2-way component speaker system
- Coated paper cone
- Rubber surround
- Resonance free steel basket
- Universal 4 ohms version
- Ferrite motor
- 12 dB/oct high pass filter
- Includes protection grill
Explore the full range in Ground Zero.
Specification
| Model | 2-way component speakers |
|---|---|
| Diameter | 100mm / 4″ |
| Power handling | (RMS/max.) 60 / 100 Watts |
| Impedance | 4 Ohms |
| Efficiency | 89 dB |
| Frequency Response | 70 Hz – 20 kHz |
| Tweeter | 19 mm / 0.75″ silk dome |
| Cone | Coated Paper |
| Mounting depth | 30mm / 1.18″ |
| Mounting cutout | 93mm / 3.66″ |
| Xmax | 5mm / 0.2″ |
| Crossover | 2x HP / 2x LP |
What's Included
- GZIC 400FX
Ground Zero
About the Ground Zero GZIC 400FX
From our tech experts at CEN
Ground Zero 4 inch component speakers, with separate tweeters for mounting where you will actually hear them, rated at 60w 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: What mounting depth does the GZIC 400FX need?
A: The 4 inch woofer needs just 30 mm mounting depth and a 93 mm cutout, so it suits shallow locations.
Q: What tweeter does the GZIC 400FX use?
A: It uses a 19 mm (0.75 inch) silk dome tweeter, with a 12 dB/oct high-pass filter.
Q: How much power does the GZIC 400FX handle?
A: It is rated at 60W RMS (100W max) at 4 ohms, with 89 dB efficiency.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional speaker installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
