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The Ground Zero GZHW 10SPL-D2 FLAT is a 10 inch (25 cm) shallow-mount SPL subwoofer with dual 2 ohm voice coils, rated at 600W RMS (1000W SPL) with a mounting depth of just 103 mm. It is built for installs where space is tight.
Ground Zero also makes this flat SPL design as the GZHW 8SPL-D2 FLAT 8 inch and the GZHW 12SPL-D2 FLAT 12 inch.
Key specifications
- Size: 25 cm / 10″ flat (shallow) SPL subwoofer
- Power handling: 600W RMS, 1000W SPL
- Impedance: 2 x 2 ohms (dual voice coil)
- Efficiency: 85 dB
- Recommended amplifier power: 400 - 1000 Watts
- Voice coil: 63 mm / 2.5″ copper, 4-layer
- Xmax: 29 mm
- Mounting diameter: 238 mm
- Mounting depth: 103 mm
GZHW 10SPL-D2 FLAT: 25 cm / 10″ high quality flat SPL subwoofer
A shallow-mount 10″ subwoofer built for tight spaces without sacrificing output. The GZHW 10SPL-D2 FLAT handles 600W RMS and fits where standard subs won't.
Features
- 10″ high quality flat SPL subwoofer
- Klippel® optimised
- Sandwich paper cone
- Durable U-shape rubber surround
- Solid aluminium cast basket
- 63 mm / 2.5″ copper voice coil
- 4-layer copper voice coil
- Push terminal
Explore the full range in Ground Zero.
Specification
| Model | High-Quality Flat SPL Subwoofer |
|---|---|
| Diameter | 25 cm / 10″ |
| Power handling | (RMS/SPL) 600 / 1000 Watts |
| Impedance | 2x2 Ohms |
| Efficiency | 85 dB |
| Power recommendation | 400 – 1000 Watts |
| Voice coil | 63 mm / 2.5″ Copper |
| Max. Excursion (Xmax) | 29 mm / 1.14″ |
| Mounting Ø | 238 mm / 9.37″ |
| Mounting depth | 103 mm / 4.06″ |
| Resonance frequency (Fs) | 35.5 Hz |
| Overall quality (Qts) | 0.434 |
| Equiv. air volume (Vas) | 19.7 L / 0.70 cu.ft. |
What's Included
- GZHW 10SPL-D2 FLAT
Ground Zero
About the Ground Zero GZHW 10SPL-D2 FLAT
From our tech experts at CEN
A Ground Zero 10 inch subwoofer, 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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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 shallow is the GZHW 10SPL-D2 FLAT?
A: The 10SPL-D2 FLAT has a mounting depth of 103 mm (4.06″), so it fits shallow enclosures and tight spaces where standard subwoofers won't.
Q: What impedance is the GZHW 10SPL-D2 FLAT?
A: It has dual 2 ohm voice coils (2 x 2 ohms), so it can be wired to 1 ohm or 4 ohm depending on your amplifier.
Q: How much amplifier power does the GZHW 10SPL-D2 FLAT need?
A: Ground Zero recommends 400 - 1000 Watts of amplifier power.
Q: Can CEN fit this subwoofer for me?
A: Yes. CEN offers professional subwoofer installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
