Magnum MEW 12-22DC
12″ subwoofer · dual 2 Ω · 3,500 W RMS
53.5 HzFs, resonance
0.87Qts
0.48 ft³Vas
3,500 WRMS
Recommended box
For a sedan, one sub, 3,500 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
smaller, tighter0.95 ft³ (27 L)
Net volume
| Qtc | 1.07 |
|---|---|
| Fc | 66 Hz |
| F3 (−3 dB, no cabin gain) | 51 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 12 11/16″ |
Ported
deeper, louder3.11 ft³ (88 L)
Net volume
| Tuning (Fb) | 33 Hz |
|---|---|
| Port | slot 5 7/8 × 14 5/16″, 59 1/4″ long |
| Port velocity at 3,500 W | 74 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 26 7/8″ |
Thiele/Small parameters
| Fs | 53.5 Hz |
|---|---|
| Qts | 0.87 |
| Qes | 0.971 |
| Qms | 8.78 |
| Vas | 0.48 ft³ |
| Re (one coil) | ≈ 1.7 Ω |
| Sd | 80.5 in² |
| Xmax | ≈ 0.39″ |
| Mms | 249 g calc. |
| BL | 12.1 T·m calc. |
| EBP | 55 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85.3 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 3,500 W |
Mounting dimensions
| Cutout diameter | 11 1/16″ |
|---|---|
| Mounting depth | 8 7/8″ |
| Overall diameter | 12 11/16″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 80.5 in².
“≈” 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-mew-12-22dc
- magnummobile.ru/sites/default/files/docs/instrukciya_magnum_mew_12-22_dc.pdf
Other Magnum 12″ models
- Magnum MBW 12-22SF 12″ · dual 2 Ω
- Magnum MBW 12-24SF 12″ · dual 4 Ω
- Magnum MHW 12-22DCLE 12″ · dual 2 Ω
- Magnum MXW 12-22DC 12″ · dual 2 Ω