Hertz / SUBWOOFER
Hertz DS 30.3: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Sd calculated from manufacturer effective diameter D: π × (D/10)² / 4 cm². One-way linear Xmax is unverified; no excursion limit is assumed.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Published volume is not a verified net air volume. Use the original drawing and subtract occupied volumes before designing.
Documentation only — check the limitations before use.
PDF · page 29Tuning Fb: 40 Hz.
Manufacturer port: shape: round, diameter: 82 mm, length: 175 mm.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Published volume is not a verified net air volume. Use the original drawing and subtract occupied volumes before designing.
Documentation only — check the limitations before use.
PDF · page 30| Fs | 32 Hz |
|---|---|
| Vas | 70 L |
| Qes | 0.71 |
| Qms | 5.14 |
| Re | 3.3 Ω |
| Sd | 522.79 cm² |
| Le | 2.2 mH |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 30.6 cm |
| Mounting cutout | 27.9 cm |
| Mounting depth | 12.0 cm |
| Published Qts | 0.62 |
|---|---|
| Published Xmax (definition to verify) | 9 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.