Focal / SUBWOOFER
Focal SUB 25 KXS: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Check the manufacturer mechanical drawing for mounting dimensions before cutting panels.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Reference recommendation: confirm net air volume after driver, port and bracing displacement before applying.
Documentation only — check the limitations before use.
PDF · page 1The published volume is not confirmed as net air volume. Check the definition in the manual.
Reference recommendation: confirm net air volume after driver, port and bracing displacement before applying.
Documentation only — check the limitations before use.
PDF · page 1| Fs | 35.0 Hz |
|---|---|
| Vas | 18.0 L |
| Qes | 0.97 |
| Qms | 5.0 |
| Re | 3.2 Ω |
| Sd | 327.0 cm² |
| Le | Not provided / unverified |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 26.8 cm |
| Mounting cutout | 23.52 cm |
| Mounting depth | 9.45 cm |
| Published Qts | 0.8 |
|---|---|
| Source table page | 1 |
| Published Xmax (convention to confirm) | 14 mm |
| RMS power | 350 W |
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: 2026-11-01.