SSA ZCON 15 D2
15″ subwoofer · dual 2 Ω · 2,500 W RMS
Fs 33.6 HzQts 0.29Vas 2.37 ft³Xmax 1.14″
The published specs don’t add up:
- The spec sheet's Qts 0.32 doesn't match its Qes and Qms (they give 0.29).
Recommended box
For a sedan, one sub, 2,500 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 | 1.13 ft³ (32 L) |
|---|---|
| Qtc | 0.51 |
| Fc | 59 Hz |
| F3 (−3 dB, no cabin gain) | 93 Hz |
| Example box (outside) | 17 5/16″ × 17 5/16″ × 10 5/16″ |
Ported
| Net volume | 2.40 ft³ (68 L) |
|---|---|
| Tuning (Fb) | 34 Hz |
| Port | slot 3 9/16 × 16 11/16″, 50 5/8″ long |
| Port velocity at 2,500 W | 74 ft/s |
| F3 (−3 dB, no cabin gain) | 35 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 17 1/8″ |
Thiele/Small parameters
| Fs | 33.6 Hz |
|---|---|
| Qts | 0.29 |
| Qes | 0.3 |
| Qms | 6.79 |
| Vas | 2.37 ft³ |
| Re (one coil) | ≈ 1.7 Ω |
| Sd | 125.6 in² |
| Xmax | 1.14″ |
| Vd | 143.3 in³ calc. |
| Mms | 311 g calc. |
| BL | 19.3 T·m calc. |
| EBP | 112 — suits ported calc. |
| Sensitivity, 1 W / 1 m | 91.3 dB calc. |
General
| Size | 15″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 2,500 W |
Mounting dimensions
| Cutout diameter | ≈ 14″ |
|---|---|
| Mounting depth | ≈ 7 1/16″ |
“≈” 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 SSA 15″ models
- SSA EVIL 15 D1 15″ · dual 1 Ω
- SSA EVIL 15 D2 15″ · dual 2 Ω