Sealed 14.2 L
Manufacturer external dimensions (width × height × depth): 386 × 352 × 160 mm.
Panel thickness: 16 mm.
Follow the original construction and damping instructions.
Hertz / SUBWOOFER
Hertz MPS 250 S2 — specifications and enclosures
Hertz MPS 250 S2: 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.
Manufacturer enclosure recommendations
Bass-reflex 17 L
Tuning Fb: 35 Hz.
Manufacturer external dimensions (width × height × depth): 660 × 372 × 130 mm.
Manufacturer port: shape: slot, width: 98 mm, height: 50.7 mm, length: 565 mm.
Panel thickness: 16 mm.
Follow the original construction and damping instructions.
Calculator parameters
| Fs | 28.0 Hz |
|---|---|
| Vas | 24.5 L |
| Qes | 0.45 |
| Qms | 5.3 |
| Re | 2.2 Ω |
| Sd | 368.47 cm² |
| Le | 2.67 mH |
| One-way linear Xmax | Not provided / unverified |
| Frame diameter | 27.45 cm |
| Mounting cutout | 23.16 cm |
| Mounting depth | 8.26 cm |
Additional manufacturer specifications
| Published Qts | 0.41 |
|---|---|
| Published Xmax (definition to verify) | 16.8 mm |
| Mms | 250 g |
| Cms | 0.13 mm/N |
| BL | 14.7 T·m |
| Spl | 82.5 dB |
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.