Magnum MBW 15-22SF
15″ subwoofer · dual 2 Ω · 1,000 W RMS
Fs 28 HzQts 0.47Vas 3.82 ft³
Recommended box
For a sedan, one sub, 1,000 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.
Sealed
| Net volume | 2.01 ft³ (57 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 48 Hz |
| F3 (−3 dB, no cabin gain) | 45 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 17 1/8″ |
Ported
| Net volume | 4.80 ft³ (136 L) |
|---|---|
| Tuning (Fb) | 29 Hz |
| Port | slot 3 1/8 × 16 5/16″, 28 1/16″ long |
| Port velocity at 1,000 W | 66 ft/s |
| F3 (−3 dB, no cabin gain) | 27 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 22 3/8″ |
Thiele/Small parameters
| Fs | 28 Hz |
|---|---|
| Qts | 0.47 |
| Qes | 0.51 |
| Qms | 6 |
| Vas | 3.82 ft³ |
| Re (one coil) | ≈ 1.7 Ω |
| Sd | ≈ 124 in² |
| Xmax | ≈ 0.39″ |
| EBP | 55 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 88.7 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 1,000 W |
Mounting dimensions
| Cutout diameter | 13 15/16″ |
|---|---|
| Mounting depth | 7 5/16″ |
| Overall diameter | 15 1/2″ |
Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).
“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.
Data sources
- magnummobile.ru/product/magnum-mbw-15-22sf
- magnummobile.ru/sites/default/files/docs/instrukciya_magnum_mbw_15-22_24sf.pdf
Other Magnum 15″ models
- Magnum MBW 15-22DC 15″ · dual 2 Ω
- Magnum MBW 15-24SF 15″ · dual 4 Ω
- Magnum MEW 15-22DC 15″ · dual 2 Ω
- Magnum MPW 15-4DC 15″ · 4 Ω
- Magnum MXW 15-22DC 15″ · dual 2 Ω