Ground Zero / SUBWOOFER
Ground Zero GZRW 250-D2 FLAT: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
One-way linear Xmax is unverified; no excursion limit is assumed. Sd is not published in the source table. Confirm voice-coil wiring and missing simulation parameters.
Manufacturer port: shape: round, diameter: 70 mm, length: 275 mm.
Net volume and port dimensions are documented. F3 is not tuning Fb; the manual does not give Fb for this variant, so it is reference-only.
Documentation only — check the limitations before use.
PDF · page 6Manufacturer port: shape: round, diameter: 70 mm, length: 300 mm.
Net volume and port dimensions are documented. F3 is not tuning Fb; the manual does not give Fb for this variant, so it is reference-only.
Documentation only — check the limitations before use.
PDF · page 6| Fs | 28.0 Hz |
|---|---|
| Vas | 35.8 L |
| Qes | 0.6 |
| Qms | 5.53 |
| Re | 3.95 Ω |
| Sd | Not provided / unverified |
| Le | 2.6 mH |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 27.6 cm |
| Mounting cutout | 23.2 cm |
| Mounting depth | 8.5 cm |
| Published Qts | 0.54 |
|---|---|
| Published Xmax (definition to verify) | 22 mm |
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.
Manufacturer technical documentation
Original manufacturer documents are not translated. Data reviewed: 2026-10-31.