STEG / SUBWOOFER
STEG ST15D2: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Conflicting Qts: published 0.463 versus about 0.530 from Qes 0.588 and Qms 5.411. Qes/Qms are withheld pending clarification. Xmax 33 mm p-p converts to 16.5 mm one-way. Port units and volume basis are unclear.
Tuning Fb: 32 Hz.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Manufacturer tuning Fb: 32 Hz. Port unit errors in sheet. Manufacturer clarification required.
Documentation only — check the limitations before use.
PDF · page 1Tuning Fb: 36 Hz.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Manufacturer tuning Fb: 36 Hz. Port unit errors in sheet. Manufacturer clarification required.
Documentation only — check the limitations before use.
PDF · page 1| Fs | 33 Hz |
|---|---|
| Vas | 14.697 L |
| Qes | Not provided / unverified |
| Qms | Not provided / unverified |
| Re | Not provided / unverified |
| Sd | 620 cm² |
| Le | Not provided / unverified |
| One-way linear Xmax | 16.5 mm |
| Frame diameter | 39.2 cm |
| Mounting cutout | 35.8 cm |
| Mounting depth | 28.5 cm |
| Published Qes / Qms / Qts | 0.588 / 5.411 / 0.463 |
|---|---|
| Re per coil | 1.8 Ω |
| Published Le, wiring unspecified | 1.3 mH |
| RMS power | 2000 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.
Original manufacturer documents are not translated. Data reviewed: 2026-10-31.