Resilient Sounds RS 15 V2 D4
15″ subwoofer · dual 4 Ω · 750 W RMS
Fs 28.5 HzQts 0.38Vas 3.88 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 | 1.17 ft³ (33 L) |
|---|---|
| Qtc | 0.79 |
| Fc | 59 Hz |
| F3 (−3 dB, no cabin gain) | 57 Hz |
| Example box (outside) | 16 15/16″ × 16 15/16″ × 11 1/16″ |
Ported
| Net volume | 3.57 ft³ (101 L) |
|---|---|
| Tuning (Fb) | 32 Hz |
| Port | slot 2 9/16 × 16 5/16″, 25 3/16″ long |
| Port velocity at 750 W | 61 ft/s |
| F3 (−3 dB, no cabin gain) | 31 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 17 3/16″ |
Thiele/Small parameters
| Fs | 28.5 Hz |
|---|---|
| Qts | 0.38 |
| Qes | 0.417 |
| Qms | 4.09 |
| Vas | 3.88 ft³ |
| Re (one coil) | 3.8 Ω |
| Sd | 128.7 in² |
| Xmax | ≈ 0.39″ |
| Mms | 277 g calc. |
| BL | 21.3 T·m calc. |
| EBP | 68 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 89.9 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 750 W |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 7 7/8″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 128.7 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 15″ models
- Resilient Sounds Gold 15 D4 15″ · dual 4 Ω
- Resilient Sounds Onyx 15 D1 15″ · dual 1 Ω
- Resilient Sounds Platinum 15 D1 15″ · dual 1 Ω
- Resilient Sounds RS 15 D4 15″ · dual 4 Ω
- Resilient Sounds Team 15 D1 15″ · dual 1 Ω