Pioneer TS-W126M
12″ subwoofer · 4 Ω · 300 W RMS
| Source | pioneer-car.eu · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 3 of 4 — missing: magnet diameter; the designer will use an estimate |
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
smaller, tighter| Bass character (Qtc) | Boomy, with a bump · 1.41 |
|---|---|
| Fc | 43 Hz |
| F3 (−3 dB, no cabin gain) | 31 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 24 3/8″ long |
| Port velocity at 300 W | 42 ft/s |
| F3 (−3 dB, no cabin gain) | 29 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 13 1/16″ |
Deeper: 3.07 ft³ (87 L) tuned to 34 Hz, 31 1/2″ × 15 3/4″ × 15 1/16″ 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 | 12″ |
|---|---|
| Voice coils | 4 Ω |
| RMS power | 300 W |
| Fs | 24.6 Hz |
| Qts | 0.82 |
| Qes | 0.86 |
| Qms | 15.6 |
| Vas | 3.61 ft³ |
| Re | 3.6 Ω |
|---|---|
| Sd | 79.8 in² |
| Xmax | 0.46″ |
| Vd | 36.7 in³ calc. |
| Mms | 154 g calc. |
| BL | 10 T·m calc. |
| EBP | 29 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 84.5 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/16″ |
|---|---|
| Mounting depth | 5 5/16″ |
| Overall diameter | 12 1/2″ |
“≈” 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
- pioneer-car.eu/asset/user_manuals/UPLOAD_ID_13062/ce350de73118421e77eb1db0e535e7
- pioneer-car.eu/uk/ts-w126m/ts-w126m
Other Pioneer 12″ models
- Pioneer TS-300D4 12″ · dual 4 Ω
- Pioneer TS-300S4 12″ · 4 Ω
- Pioneer TS-A30S4 12″ · 4 Ω
- Pioneer TS-A120D4 12″ · dual 4 Ω
- Pioneer TS-A120S4E 12″ · 4 Ω
- Pioneer TS-A300D4 12″ · dual 4 Ω
- Pioneer TS-A301D4 12″ · dual 4 Ω
- Pioneer TS-A301S4 12″ · 4 Ω
- Pioneer TS-A3000LS4 12″ · 4 Ω
- Pioneer TS-D12D2 12″ · dual 2 Ω
- Pioneer TS-D12D4 12″ · dual 4 Ω
- Pioneer TS-SW3002S4 12″ · 4 Ω
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Kenwood KFC-W3013PS 1.80 ft³ sealed · 2.33 ft³ ported
- Soundstream SPL MULE 1.66 ft³ sealed · 2.15 ft³ ported
- Pyle PLW12RD 1.73 ft³ sealed · 2.26 ft³ ported
- Quantum Audio QW1000/12S4 1.87 ft³ sealed · 2.44 ft³ ported
- Spyder Street PWR 12 300W 1.73 ft³ sealed · 1.94 ft³ ported
- Quantum Audio QW1000/12D4 1.87 ft³ sealed · 2.40 ft³ ported
FAQ
What box does the Pioneer TS-W126M need?
Recommended net volume: 1.80 ft³ sealed, 2.37 ft³ ported tuned to 30 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Pioneer TS-W126M Thiele/Small specs?
Fs 24.6 Hz, Qts 0.82, Vas 3.61 ft³, Xmax 0.46″, Sd 79.8 in².
What is the Pioneer TS-W126M mounting depth?
Mounting depth is 5 5/16″, cutout diameter 11 1/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Pioneer TS-W126M handle and how do I wire it?
RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.