Bass-reflex · 60 L net
Tuning Fb: 47 Hz.
Manufacturer port: shape: round, diameter: 100 mm, length: 105 mm.
Loads manufacturer net volume and Fb. Check port geometry separately. Port dimensions are reference data, not a ready cutting plan.
Ground Zero / SUBWOOFER
Ground Zero GZNW 30SPL-D1 — specifications and enclosures
Ground Zero GZNW 30SPL-D1: 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 uses series-connected coils.
Manufacturer enclosure recommendations
Calculator parameters
| Fs | 38.6 Hz |
|---|---|
| Vas | 23.6 L |
| Qes | 0.42 |
| Qms | 4.4 |
| Re | 1.72 Ω |
| Sd | Not provided / unverified |
| Le | Not provided / unverified |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 31.5 cm |
| Mounting cutout | 28.1 cm |
| Mounting depth | 23.7 cm |
Additional manufacturer specifications
| RMS power (manufacturer) | 3000 W |
|---|---|
| Published Qts | 0.38 |
| Source revision | GZNW-30SPL-D1-D2_OM_052020.pdf |
| Published excursion (not verified one-way linear Xmax) | Xmax (mm / inch) 70 / 2.76 70 / 2.76 |
| Moving mass Mms | 269.5 g |
| Force factor BL | 16.3 Tm |
| Nominal impedance | 2 × 1 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.