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The Ground Zero GZRW 12XSPL is a 12″ (30 cm) dual 2 ohm competition SPL subwoofer rated at 1000W RMS / 1500W SPL, from Ground Zero's GZRW range. It features a 75 mm copper voice coil and 45 mm Xmax for serious high-output bass performance.
Key specifications
- Size: 30 cm / 12 inch
- Power handling: 1000W RMS / 1500W SPL
- Impedance: 2x2 ohms (dual voice coil)
- Recommended amplifier power: 800–1500W
- Efficiency: 83 dB
- Voice coil: 75 mm / 3 inch copper
- Xmax: 45 mm
- Mounting depth: 166 mm
GZRW 12XSPL: 30 cm / 12″ high quality SPL subwoofer
A competition-grade 12″ subwoofer built for serious output. Handles 1000W RMS with a dual 2 ohm voice coil configuration.
Features
- 12″ high quality SPL subwoofer
- Klippel® optimised
- Reinforced paper cone
- Long stroke compound surround
- Resonance free steel basket
- 75 mm / 3″ copper voice coil
- 2-layer Polycot spider
- IMPP dust cap with 3D structure logo
Explore the full range in Ground Zero Radioactive.
Specification
| Model | High-Quality SPL Subwoofer |
|---|---|
| Diameter | 30 cm / 12″ |
| Power handling | (RMS/SPL) 1000 / 1500 Watts |
| Impedance | 2x2 Ohms |
| Efficiency | 83 dB |
| Power recommendation | 800 – 1500 Watts |
| Voice coil | 75 mm / 3″ copper |
| Cone | Reinforced paper |
| Max. Excursion (Xmax) | 45 mm |
| Mounting depth | 166 mm |
| Resonance frequency (Fs) | 31.8 Hz |
| Damping ratio (Qts) | 0.684 |
| Equiv. air volume (Vas) | 27.2 L |
What's Included
- GZRW 12XSPL
Ground Zero
About the Ground Zero GZRW 12XSPL
From our tech experts at CEN
A Ground Zero 12 inch subwoofer, 2 ohm, handling 1000w RMS.
Who it suits
Drivers building a system where the bass keeps pace with the front stage, and competition builds where output is the point.
Our tech experts advise
Enclosure volume and tuning decide most of what you hear. We build enclosures to suit both driver and vehicle at our Beeston workshop. 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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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
More from Ground Zero Radioactive
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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: Can the GZRW 12XSPL be wired to 1 ohm or 4 ohm?
A: Yes. The GZRW 12XSPL has dual 2 ohm voice coils (2x2 ohms), so it can be wired in parallel for a 1 ohm load or in series for a 4 ohm load. Choose the wiring to suit the stable load of your amplifier. Ground Zero recommends 800 to 1500W of amplifier power.
Q: What are the Thiele/Small parameters of the GZRW 12XSPL?
A: Fs is 31.8 Hz, Qts is 0.684 and Vas is 27.2 litres. Xmax is 45 mm.
Q: Can CEN fit this subwoofer for me?
A: Yes. CEN offers professional installation from our Nottingham premises, including enclosure, amplifier and wiring. Contact us to book or ask for a quote.
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