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The Ground Zero GZRW 6XSPL is a 6.5 inch (16.5 cm) SPL car subwoofer with dual 2 ohm voice coils, rated at 350W RMS and 700W SPL. It is a compact, competition-grade driver for serious bass output where larger subwoofers will not fit.
Need more output from the same range? The GZRW 8XSPL is the 8 inch version, rated at 500W RMS.
Key specifications
- Size: 6.5″ / 16.5 cm
- Power handling: 350W RMS / 700W SPL
- Recommended amplifier power: 250 – 700W
- Impedance: 2 x 2 ohm (dual voice coil)
- Sensitivity: 79 dB
- Xmax: 22 mm / 0.866″
- Mounting diameter: 147 mm / 5.79″
- Mounting depth: 99 mm / 3.90″
- Voice coil: 50 mm / 2″ copper
16.5 cm / 6.5″ high quality SPL subwoofer
A compact, competition-grade subwoofer built for serious SPL output. Rated at 350w RMS with dual 2 ohm voice coils, it fits where larger drivers can't.
Features
- 6.5″ high quality SPL subwoofer
- Klippel® optimized
- Reinforced paper cone
- Long stroke compound surround
- Resonance free steel basket
- 50 mm / 2″ copper voice coil
- Polycot spider
- IMPP dust cap with 3D structure logo
Explore the full range in Ground Zero.
Specification
| Model | High-Quality SPL subwoofer |
|---|---|
| Diameter | 16.5 cm / 6.50″ |
| Power handling | (RMS/SPL) 350 / 700 Watts |
| Impedance | 2x2 Ohms |
| Efficiency | 79 dB |
| Power recommendation | 250 – 700 Watts |
| Voice coil | 50 mm / 2″ copper |
| Cone | Reinforced paper |
| Max. Excursion (Xmax) | 22 mm / 0.866″ |
| Mounting Ø | 147 mm / 5.79″ |
| Mounting depth | 99 mm / 3.90″ |
| Resonance frequency (Fs) | 49.5 Hz |
| Overall quality (Qts) | 0.621 |
| Equiv. air volume (Vas) | 2.2 L / 0.078 cu.ft. |
What's Included
- GZRW 6XSPL
Ground Zero
About the Ground Zero GZRW 6XSPL
From our tech experts at CEN
A Ground Zero 6.5 inch subwoofer, 2 ohm, handling 350w 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: How much power can the GZRW 6XSPL handle?
A: It is rated at 350W RMS and 700W SPL. Ground Zero recommends an amplifier delivering 250 to 700 watts.
Q: What impedance is the GZRW 6XSPL?
A: It has dual 2 ohm voice coils (2 x 2 ohm). Wired in series they present a 4 ohm load and in parallel a 1 ohm load.
Q: How much space does the GZRW 6XSPL need?
A: It needs a 147 mm mounting diameter and 99 mm of mounting depth.
Q: Can CEN fit this subwoofer for me?
A: Yes. CEN offers professional subwoofer and amplifier installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
