RE Audio SRX15 D4
15″ subwoofer · dual 4 Ω · 300 W RMS
Fs 23 HzQts 0.41Vas 7.17 ft³Xmax 0.71″
Recommended box
For a sedan, one sub, 300 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 | 2.58 ft³ (73 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 45 Hz |
| F3 (−3 dB, no cabin gain) | 43 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 10 7/8″ |
Ported
| Net volume | 4.87 ft³ (138 L) |
|---|---|
| Tuning (Fb) | 30 Hz |
| Port | slot 1 3/4 × 16 11/16″, 13 9/16″ long |
| Port velocity at 300 W | 59 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 19 7/8″ |
Thiele/Small parameters
| Fs | 23 Hz |
|---|---|
| Qts | 0.41 |
| Qes | 0.45 |
| Qms | 4.87 |
| Vas | 7.17 ft³ |
| Re (one coil) | 3.6 Ω |
| Sd | 125.6 in² |
| Xmax | 0.71″ |
| Vd | 89 in³ calc. |
| Mms | 219 g calc. |
| BL | 15.9 T·m calc. |
| EBP | 51 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 89.4 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 300 W |
Mounting dimensions
| Cutout diameter | 14″ |
|---|---|
| Mounting depth | 7 15/16″ |
| Overall diameter | 15 9/16″ |
Judging by its value, the published Re is for both coils in parallel — 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 RE Audio 15″ models
- RE Audio SEX15 D4 v2 15″ · dual 4 Ω
- RE Audio SXX15 D4 v2 15″ · dual 4 Ω
- RE Audio XX15 D2 v2 15″ · dual 2 Ω
- RE Audio XX15 D4 v2 15″ · dual 4 Ω
- RE Audio XXX15 D4 v2 15″ · dual 4 Ω