Resilient Sounds RS 12 V2 D4
12″ subwoofer · dual 4 Ω · 750 W RMS
Fs 31.1 HzQts 0.42Vas 1.37 ft³
Recommended box
For a sedan, one sub, 750 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 | 0.74 ft³ (21 L) |
|---|---|
| Qtc | 0.70 |
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 56 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 10 7/16″ |
Ported
| Net volume | 1.66 ft³ (47 L) |
|---|---|
| Tuning (Fb) | 32 Hz |
| Port | slot 1 15/16 × 14 5/16″, 40″ long |
| Port velocity at 750 W | 62 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 11 7/8″ |
Thiele/Small parameters
| Fs | 31.1 Hz |
|---|---|
| Qts | 0.42 |
| Qes | 0.483 |
| Qms | 3.02 |
| Vas | 1.37 ft³ |
| Re (one coil) | 3.8 Ω |
| Sd | 82.4 in² |
| Xmax | ≈ 0.39″ |
| Mms | 269 g calc. |
| BL | 20.4 T·m calc. |
| EBP | 64 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85.9 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 750 W |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 6 3/4″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 82.4 in².
Judging by its value, the published Re is for both coils in series — converted to per coil.
“≈” 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
Other Resilient Sounds 12″ models
- Resilient Sounds Gold 12 D4 12″ · dual 4 Ω
- Resilient Sounds Onyx 12 D1 12″ · dual 1 Ω
- Resilient Sounds Platinum 12 D1 12″ · dual 1 Ω
- Resilient Sounds RS 12 D4 12″ · dual 4 Ω