Sealed · 8 L net
Loads net volume. Check geometry, driver displacement and bracing.
Ground Zero / SUBWOOFER
Ground Zero GZUW 8CF — specifications and enclosures
Ground Zero GZUW 8CF: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Parameters use the linked manufacturer manual revision. One-way linear Xmax is not unambiguously confirmed; total excursion is not used as a simulation limit. Complete missing fields before full simulation. Re follows the published table; confirm the T/S measurement coil wiring.
Manufacturer enclosure recommendations
Sealed · 20 L net
Loads net volume. Check geometry, driver displacement and bracing.
Bass-reflex · 18 L net
Manufacturer port: shape: round, diameter: 70 mm, length: 250 mm.
Published volume and port design do not unambiguously specify Fb. F3 is not tuning frequency. Reference profile; see PDF for port details. Port dimensions are reference data, not a ready cutting plan.
Documentation only — check the limitations before use.
PDF · page 3Calculator parameters
| Fs | 57.0 Hz |
|---|---|
| Vas | 4.8 L |
| Qes | 0.74 |
| Qms | 11.92 |
| Re | 4.1 Ω |
| Sd | 201.0 cm² |
| Le | 1.57 mH |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 21.5 cm |
| Mounting cutout | 18.1 cm |
| Mounting depth | 10.8 cm |
Additional manufacturer specifications
| RMS power (manufacturer) | 300 W |
|---|---|
| Published Qts | 0.7 |
| Source revision | GZUW-10CF-GZUW-8CF_OM_AWV4.0.pdf |
| Published excursion (not verified one-way linear Xmax) | Xmax (mm / inch) 20mm / 0.79 " 20mm / 0.79 " |
| Moving mass Mms | 91 g |
| Force factor BL | 13.6 Tm |
| Nominal impedance | 2 × 2 Ω |
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
Original manufacturer documents are not translated. Data reviewed: 2026-10-31.