Resilient Sounds RS 15 D4
15″ subwoofer · dual 4 Ω · 500 W RMS
Fs 27.3 HzQts 0.64Vas 5.02 ft³Xmax 0.67″
Recommended box
For a sedan, one sub, 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
| Net volume | 3.00 ft³ (85 L) |
|---|---|
| Qtc | 1.04 |
| Fc | 45 Hz |
| F3 (−3 dB, no cabin gain) | 36 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 12 5/8″ |
Ported
| Net volume | 5.12 ft³ (145 L) |
|---|---|
| Tuning (Fb) | 33 Hz |
| Port | slot 2 3/8 × 16 5/16″, 13 5/16″ long |
| Port velocity at 500 W | 60 ft/s |
| F3 (−3 dB, no cabin gain) | 29 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 21 3/8″ |
Thiele/Small parameters
| Fs | 27.3 Hz |
|---|---|
| Qts | 0.64 |
| Qes | 0.72 |
| Qms | 5.44 |
| Vas | 5.02 ft³ |
| Re (one coil) | 3.8 Ω |
| Sd | 131.8 in² |
| Xmax | 0.67″ |
| Vd | 88.2 in³ calc. |
| Mms | 245 g calc. |
| BL | 14.9 T·m calc. |
| EBP | 38 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 88 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 500 W |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 7 1/4″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 131.7 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 V2 D4 15″ · dual 4 Ω
- Resilient Sounds Team 15 D1 15″ · dual 1 Ω