Pioneer TS-A2000LD2
8″ subwoofer · dual 2 Ω · 250 W RMS
Fs 63 HzQts 0.99Vas 0.15 ft³Xmax 0.09″
Recommended box
For a sedan, one sub, 250 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 | 0.32 ft³ (9 L) |
|---|---|
| Qtc | 1.20 |
| Fc | 76 Hz |
| F3 (−3 dB, no cabin gain) | 57 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 9 1/4″ |
Ported
| Net volume | 1.31 ft³ (37 L) |
|---|---|
| Tuning (Fb) | 35 Hz |
| Port | slot 1 9/16 × 14 5/16″, 33 3/4″ long |
| Port velocity at 250 W | 46 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 1/4″ |
Thiele/Small parameters
| Fs | 63 Hz |
|---|---|
| Qts | 0.99 |
| Qes | 1.186 |
| Qms | 6 |
| Vas | 0.15 ft³ |
| Re (one coil) | ≈ 1.7 Ω |
| Sd | ≈ 33.3 in² |
| Xmax | 0.09″ |
| EBP | 53 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 81.4 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 250 W |
Mounting dimensions
| Cutout diameter | 7″ |
|---|---|
| Mounting depth | 2 5/8″ |
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.