Avatar Doomsday 12 D1
12″ subwoofer · dual 1 Ω · 3,500 W RMS
Fs 30 HzQts 0.35Vas 0.64 ft³Xmax 0.79″
Recommended box
For a sedan, one sub, 3,500 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 | 0.92 ft³ (26 L) |
|---|---|
| Qtc | 0.46 |
| Fc | 39 Hz |
| F3 (−3 dB, no cabin gain) | 70 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 12 5/16″ |
Ported
| Net volume | 1.45 ft³ (41 L) |
|---|---|
| Tuning (Fb) | 25 Hz |
| Port | round port Ø2 1/2″, 12 7/8″ long |
| Port velocity at 3,500 W | 735 ft/s |
| F3 (−3 dB, no cabin gain) | 23 Hz |
| Example box (outside) | 19 1/2″ × 15 3/4″ × 12 3/16″ |
Thiele/Small parameters
| Fs | 30 Hz |
|---|---|
| Qts | 0.35 |
| Qes | 0.372 |
| Qms | 6 |
| Vas | 0.64 ft³ |
| Re (one coil) | ≈ 0.85 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.79″ |
| EBP | 81 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.2 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 1 Ω |
| RMS power | 3,500 W |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 9 3/4″ |
Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).
“≈” 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 Avatar 12″ models
- Avatar Doomsday 12 D2 12″ · dual 2 Ω
- Avatar SST-12 12″ · 4 Ω
- Avatar SST-312 D2 12″ · dual 2 Ω
- Avatar Volcano 12 D1 12″ · dual 1 Ω
- Avatar Volcano 12 D2 12″ · dual 2 Ω