Ground Zero / SUBWOOFER
Ground Zero GZHW 8SPL-D2 FLAT — specifications and enclosures
Ground Zero GZHW 8SPL-D2 FLAT: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
The manual specifies peak-to-peak excursion; it has not been imported as one-way linear Xmax. Verify mounting dimensions on the original manufacturer drawing before construction. No separately verified enclosure preset is included. See the manufacturer PDF; calculator proposals are not manufacturer recommendations.
Manufacturer enclosure recommendations
No ready-to-load manufacturer enclosure is documented. Load the driver parameters to calculate a CarBoxLab starting design.
Calculator parameters
| Fs | 31.5 Hz |
|---|---|
| Vas | 14.2 L |
| Qes | 0.44 |
| Qms | 6.36 |
| Re | 4.05 Ω |
| Sd | Not provided / unverified |
| Le | Not provided / unverified |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | Not provided / unverified |
| Mounting cutout | Not provided / unverified |
| Mounting depth | Not provided / unverified |
Additional manufacturer specifications
| Published Qts | 0.41 |
|---|
Data is for one subwoofer. Manufacturer recommendations are separate from CarBoxLab calculations. Net air volume excludes the driver, port and bracing; design dimensions are external. Loading a recommendation transfers the verified volume and tuning; confirm port geometry and construction separately.
Source documentation
Manufacturer technical documentation
Original manufacturer documents are not translated. Data reviewed: 2026-11-01.