Rockford Fosgate / SUBWOOFER
Rockford Fosgate T212D4 — specifications and enclosures
Rockford Fosgate T212D4: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Archived manufacturer generation. Match the complete model code before use; dimensions not yet verified from the drawing remain blank. T/S measurements with voice coils in series. No separately verified enclosure preset is included in this entry. Consult the linked manufacturer PDF; calculator suggestions are separate from 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 | 29.0 Hz |
|---|---|
| Vas | 26.4 L |
| Qes | 0.48 |
| Qms | 4.72 |
| Re | 6.4 Ω |
| Sd | 430.0 cm² |
| Le | 5.6 mH |
| One-way linear Xmax | 19.0 mm |
| Frame diameter | Not provided / unverified |
| Mounting cutout | Not provided / unverified |
| Mounting depth | Not provided / unverified |
Additional manufacturer specifications
| Published Qts | 0.44 |
|---|
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: 2026-10-31.