Ground Zero GZHW-10SPL-D2 FLAT 10" Subwoofer
Ground Zero GZHW-10SPL-D2 FLAT 10" Subwoofer
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Ground Zero GZHW-10SPL-D2 FLAT 10" Shallow SPL Subwoofer (Single)
The Ground Zero GZHW-10SPL-D2 FLAT is a 10" shallow-mount SPL subwoofer with dual 2Ω voice coils. It is rated at 600 watts RMS and 1000 watts SPL, with a 4.06" mounting depth. This listing is for a single subwoofer.
10" Shallow SPL Subwoofer for Harley Audio
A shallow-mount, high-power subwoofer with dual voice coils for flexible amplifier matching.
- 600 watts RMS / 1000 watts SPL
- Dual 2Ω voice coils
- 4.06" mounting depth
Key Product Details
| Product | Ground Zero GZHW-10SPL-D2 FLAT 10" Shallow SPL Subwoofer |
| Voice Coils | Dual 2Ω |
| Power Handling | 600W RMS / 1000W SPL |
| Mounting | 9.37" / 238mm cutout, 4.06" / 103mm depth |
| Sold As | Single |
Always verify voice coil wiring, enclosure volume, mounting depth, amplifier power, and final fitment before ordering for your Harley-Davidson audio build.
A Shallow-Mount SPL Subwoofer
The GZHW-10SPL-D2 FLAT is designed for high output where mounting depth is limited. Its 2.5" (63mm) copper voice coils are dual 2Ω.
- 10" (250mm) shallow-mount design.
- Recommended amplifier power of 400 to 1000 watts.
- Dual voice coils for flexible wiring.
Specifications
| Size | 10" / 250mm shallow subwoofer |
| Impedance | Dual 2Ω voice coils |
| Power Handling | 600 watts RMS / 1000 watts SPL |
| Recommended Amplifier Power | 400–1000 watts |
| Efficiency | 85dB |
| Voice Coil | 2.5" / 63mm copper |
| Resonance Frequency (Fs) | 35.5Hz |
| Max. Excursion (Xmax) | 29 mm / 1.14" |
| Qts | 0.434 |
| Vas | 19.7 liters |
| Recommended Vented Enclosure | 17 L (0.60 cu.ft.) net, one 70 mm port, 300 mm port length, F3 39 Hz |
| Minimum Sealed Enclosure | 15 L (0.53 cu.ft.) net, Qtc 0.67, F3 58 Hz |
| Mounting Cutout | 9.37" / 238mm |
| Mounting Depth | 4.06" / 103mm |
Fitment and System Planning
Confirm subwoofer depth, cutout, enclosure volume, voice coil wiring, impedance and amplifier compatibility before installation.
Match the subwoofer to an amplifier that can drive its dual voice coils at the final impedance you wire. Confirm your year and model with Garage Bagger Stereo before ordering.
Mounting rings: 10-inch subwoofers need mounting (adapter) rings. Browse the Nagy's Customs adapter rings collection, including the Nagy's Customs Monster Mega 10″ 98-23 HD Subwoofer or Midbass Adapter Rings (Pair), and confirm the right ring for your year and model with Garage Bagger Stereo before ordering.
Related Paths
Ground Zero GZHW-10SPL-D2 FLAT FAQ
What voice coil configuration does the GZHW-10SPL-D2 FLAT use?
It has dual 2Ω voice coils. Match the wiring to an amplifier that can drive the final impedance.
How much power can it handle?
Ground Zero rates it at 600 watts RMS and 1000 watts SPL, with a recommended amplifier power of 400 to 1000 watts.
What are the mounting dimensions?
Ground Zero lists a 9.37 inch (238mm) mounting cutout and a 4.06 inch (103mm) mounting depth. Verify the available depth and cutout before ordering.
What enclosure does the GZHW-10SPL-D2 FLAT need?
Ground Zero recommends a vented enclosure of 17 L (0.60 cu.ft.) net with one 70 mm port, 300 mm in length (F3 of 39 Hz). A sealed enclosure needs at least 15 L (0.53 cu.ft.) net, which gives a Qtc of 0.67 and an F3 of 58 Hz with limited low-frequency range and power handling. This is an oversized ten, so a custom enclosure is encouraged for best performance.
Is the GZHW-10SPL-D2 FLAT sold as a pair?
No. This listing is for a single subwoofer, so order two if you need a pair.
What else do I need to run the GZHW-10SPL-D2 FLAT?
Plan for an amplifier that matches the final wired impedance and power, OFC wire, a clean signal input, an enclosure of the right volume, and a tuning plan such as a DSP. Garage Bagger Stereo can help you match the parts to your bike.
Does Garage Bagger Stereo install the GZHW-10SPL-D2 FLAT?
Garage Bagger Stereo offers motorcycle audio installation at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131 to check scheduling.
Need Help Choosing?
Not sure which amplifier, enclosure or wiring suits your bike? Tell Garage Bagger Stereo what you are building and we will help match the parts.
Similar Products
A Ground Zero 10-Inch Subwoofer Built for Shallow Spaces
Most 10" subs are too deep for a saddlebag. Ground Zero built the GZHW-10SPL-D2 FLAT with a mounting depth of just over 4", and says it works in some OEM-sized saddlebags, side-by-side enclosures, truck boxes and spare tire enclosures.
It's a dual 2 ohm sub rated 600 W RMS and 1,000 W SPL, with a cast aluminum basket, paper sandwich cone and 4-layer copper voice coil. It's sold as a single, so order two for a pair of bags.
Measure your bag before you order. Depth behind the lid, the bag wall and the latch hardware all decide whether a 10" fits. Need the cutout done right? Book the build.
Powering and Wiring a Ground Zero Sub on a Bagger
Two 2 ohm voice coils give you wiring choices. In series, one sub is a 4 ohm load. In parallel, it's 1 ohm. Two subs open up more options. Wire to the load your mono amp is built for.
A mono amp is never plug and play. It needs its own power run, ground, signal and tune. Compare options in motorcycle amplifiers.
Want it done as a package? The Ground Zero 10" subwoofer kit for Harley Touring is in the Ground Zero collection.
More Ground Zero GZHW-10SPL-D2 FLAT 10" Subwoofer Questions
How deep is the Ground Zero GZHW-10SPL-D2 FLAT?
Ground Zero lists a shallow mounting depth of just over 4 inches. Measure your saddlebag or enclosure before you order.
Will a Ground Zero 10 inch flat sub fit in Harley saddlebags?
Ground Zero says it fits some OEM-sized saddlebags. Fit depends on the bag and lid, so measure depth and clearance first.
Is the GZHW-10SPL-D2 FLAT sold as a pair?
No. It is sold as a single. Order two for a pair of saddlebags.