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The Ground Zero GZRW 25-D2 is a 10″ (25 cm) dual 2 ohm subwoofer rated at 600W RMS, from the Ground Zero GZRW street car subwoofer range. It features a 63 mm copper voice coil, 50 mm Xmax, and Klippel-optimised design for clean, controlled bass in daily-use installations.
Key specifications
- Size: 25 cm / 10 inch
- Power handling: 600W RMS
- Impedance: 2x2 ohms (dual voice coil)
- Recommended amplifier power: 300 to 900W
- Efficiency: 82 dB
- Voice coil: 63 mm / 2.5 inch copper
- Xmax: 50 mm / 1.97 inch
- Mounting depth: 151 mm / 5.94 inch
- Mounting diameter: 228 mm / 8.98 inch
GZRW 25-D2: 25 cm / 10″ high quality subwoofer
A 10″ dual 2 ohm subwoofer delivering 600W RMS, built for clean, controlled bass in street and daily-use installations.
Features
- 10″ high quality street subwoofer
- Klippel® optimised for accurate cone movement and reduced distortion
- Reinforced paper cone for rigidity without added weight
- Long stroke compound surround for extended excursion
- Resonance free steel basket keeps unwanted vibration out of the sound
- 63 mm / 2.5″ copper voice coil
- Polycot spider for consistent cone control
- IMPP dust cap with 3D structure logo
Explore the full range in Ground Zero Radioactive.
Specification
| Model | High-Quality street subwoofer |
|---|---|
| Diameter | 25 cm / 10″ |
| Power Handling | (RMS) 600 Watts |
| Impedance | 2x2 Ohms |
| Efficiency | 82 dB |
| Power recommendation | 300 – 900 Watts |
| Voice coil | 63 mm / 2.5″ Copper |
| Cone | Reinforced paper |
| Max. Excursion (Xmax) | 50 mm / 1.97″ |
| Mounting Ø | 228 mm / 8.98″ |
| Mounting depth | 151 mm / 5.94″ |
| Resonance frequency (Fs) | 26.3 Hz |
| Overall quality (Qts) | 0.54 |
| Equiv. air volume (Vas) | 28.3 L / 1 cu.ft. |
What's Included
- GZRW 25-D2
Ground Zero
About the Ground Zero GZRW 25-D2
From our tech experts at CEN
A Ground Zero 10 inch subwoofer, 2 ohm, handling 600w 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
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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 25-D2 be wired to 1 ohm or 4 ohm?
A: Yes. The GZRW 25-D2 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 300 to 900W of amplifier power.
Q: What are the Thiele/Small parameters of the GZRW 25-D2?
A: Fs is 26.3 Hz, Qts is 0.54 and Vas is 28.3 litres (1 cu.ft). Xmax is 50 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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