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The Ground Zero GZRW 15XSPL is a 15 inch (38 cm) SPL car subwoofer rated at 1200W RMS (1800W SPL) with dual 2 ohm voice coils. With a 75 mm copper voice coil and 45 mm Xmax, it is built for high-output SPL systems.
Key specifications
- Size: 38 cm / 15 inch
- Power handling: 1200W RMS / 1800W SPL
- Impedance: 2x2 ohms (dual voice coil)
- Recommended amplifier power: 1000 to 1800W
- Efficiency: 87.8 dB
- Voice coil: 75 mm / 3 inch copper
- Xmax: 45 mm
- Mounting depth: 186 mm
GZRW 15XSPL: 38 cm / 15″ high quality SPL subwoofer
A serious 15″ SPL subwoofer built for high output. Handles 1200w RMS across a dual 2 ohm voice coil setup.
Features
- 15″ high quality SPL subwoofer
- Klippel® optimised for accurate cone control and reduced distortion
- Reinforced paper cone for rigidity under high power
- Long stroke compound surround for extended excursion
- Resonance free steel basket
- 75 mm / 3″ copper voice coil
- 2-layer Polycot spider for consistent return force
- IMPP dust cap with 3D structure logo
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Specification
| Model | High-Quality SPL Subwoofer |
|---|---|
| Diameter | 38 cm / 15″ |
| Power handling | (RMS/SPL) 1200 / 1800 Watts |
| Impedance | 2x2 Ohms |
| Efficiency | 87.8 dB |
| Power recommendation | 1000 – 1800 Watts |
| Voice coil | 75 mm / 3″ copper |
| Cone | Reinforced paper |
| Max. Excursion (Xmax) | 45 mm |
| Mounting depth | 186 mm |
| Resonance frequency (Fs) | 34.1 Hz |
| Damping ratio (Qts) | 0.59 |
| Equiv. air volume (Vas) | 63.3 L |
What's Included
- GZRW 15XSPL
Ground Zero
About the Ground Zero GZRW 15XSPL
From our tech experts at CEN
A Ground Zero 15 inch subwoofer, 2 ohm, handling 1200w 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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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 15XSPL be wired to 1 ohm or 4 ohm?
A: Yes. The GZRW 15XSPL 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 1000 to 1800W of amplifier power.
Q: What are the Thiele/Small parameters of the GZRW 15XSPL?
A: Fs is 34.1 Hz, Qts is 0.59 and Vas is 63.3 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.
