Pioneer TS-W257D4
10″ subwoofer · dual 4 Ω · 350 W RMS
| Source | pioneer-car.eu · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 2 of 4 — missing: frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 350 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
smaller, tighter| Bass character (Qtc) | Tight and punchy · 0.80 |
|---|---|
| Fc | 58 Hz |
| F3 (−3 dB, no cabin gain) | 55 Hz |
| Example box (outside) | 12 5/8″ × 12 5/8″ × 10 1/8″ |
Ported
deeper, louder| Tuning (Fb) | 46 Hz |
|---|---|
| Port | 2 round ports Ø2 1/2″, 14 3/8″ long |
| Port velocity at 350 W | 100 ft/s |
| F3 (−3 dB, no cabin gain) | 41 Hz |
| Example box (outside) | 18 3/4″ × 15 3/4″ × 8 1/16″ |
At 350 W this example’s port will be noisy: air speed 100 ft/s, while the limit is 82 ft/s. It stays quiet up to about 230 W. Full power needs a port of at least 12.2 in², which means a bigger box than this example — size it in the designer.
Open ported box in designerDeeper: 1.70 ft³ (48 L) tuned to 32 Hz, 31 1/2″ × 15 3/4″ × 10 11/16″ outside — a bigger box with flatter deep bass. Open in the calculator
Projects with this subwoofer
Boxes that users designed and published: plans, cut sheet and response graph.
Thiele/Small parameters
| Size | 10″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 350 W |
| Fs | 39.7 Hz |
| Qts | 0.55 |
| Qes | 0.57 |
| Qms | 12.94 |
| Vas | 0.64 ft³ |
| Re (one coil) | 3 Ω |
|---|---|
| Sd | 48.7 in² |
| Xmax | 0.45″ |
| Vd | 22 in³ calc. |
| Mms | 124 g calc. |
| BL | 12.8 T·m calc. |
| EBP | 70 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85 dB calc. |
Mounting dimensions
| Cutout diameter | 9 3/8″ |
|---|---|
| Mounting depth | 5 5/8″ |
“≈” 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 Pioneer 10″ models
- Pioneer TS-A25S4 10″ · 4 Ω
- Pioneer TS-A250D4 10″ · dual 4 Ω
- Pioneer TS-A2500LS4 10″ · 4 Ω
- Pioneer TS-D10D2 10″ · dual 2 Ω
- Pioneer TS-D10D4 10″ · dual 4 Ω
- Pioneer TS-D10LS2 10″ · 2 Ω
- Pioneer TS-D10LS4 10″ · 4 Ω
- Pioneer TS-ME100WC 10″ · 4 Ω
- Pioneer TS-ME100WS 10″ · 4 Ω
- Pioneer TS-SW2502S4 10″ · 4 Ω
- Pioneer TS-W106M 10″ · 4 Ω
- Pioneer TS-W254F 10″ · 4 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Kicker L7 10" 2-Ohm DVC (41L7102) 0.64 ft³ sealed · 1.77 ft³ ported
- ARC Audio Black 10D2 V2 0.49 ft³ sealed · 0.85 ft³ ported
- Swat REV-10 v.2 0.49 ft³ sealed · 0.85 ft³ ported
- Swat REV-10 0.46 ft³ sealed · 0.85 ft³ ported
- CT Sounds HYDRO-10 D4 0.53 ft³ sealed · 0.88 ft³ ported
- Ground Zero GZUW 10CF (2x2 Ohm) 0.64 ft³ sealed · 0.85 ft³ ported
FAQ
What box does the Pioneer TS-W257D4 need?
Recommended net volume: 0.57 ft³ sealed, 0.78 ft³ ported tuned to 46 Hz — for one sub in a sedan at 350 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Pioneer TS-W257D4 Thiele/Small specs?
Fs 39.7 Hz, Qts 0.55, Vas 0.64 ft³, Xmax 0.45″, Sd 48.7 in².
What is the Pioneer TS-W257D4 mounting depth?
Mounting depth is 5 5/8″, cutout diameter 9 3/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Pioneer TS-W257D4 handle and how do I wire it?
RMS power rating: 350 W. Dual 4 Ω voice coils: series gives 8 Ω, parallel gives 2 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.