Pioneer TS-W304F

12″ subwoofer · 4 Ω · 300 W RMS

32.3 HzFs, resonance

0.54Qts

3.06 ft³Vas

0.44″Xmax

300 WRMS

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, 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

1.73 ft³ (49 L)

Net volume

Bass character (Qtc)	Tight and punchy · 0.90
Fc	54 Hz
F3 (−3 dB, no cabin gain)	47 Hz
Example box (outside)	31 1/2″ × 15 3/4″ × 8 3/4″

Open sealed box in designer

Ported

deeper, louder

2.26 ft³ (64 L)

Net volume

Tuning (Fb)	34 Hz
Port	slot 1 9/16 × 14 5/16″, 19 3/16″ long
Port velocity at 300 W	50 ft/s
F3 (−3 dB, no cabin gain)	35 Hz
Example box (outside)	31 1/2″ × 15 3/4″ × 12 1/4″

Open ported box in designer

Deeper: 2.97 ft³ (84 L) tuned to 37 Hz, 31 1/2″ × 15 3/4″ × 14 11/16″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	12″
Voice coils	4 Ω
RMS power	300 W
Fs	32.3 Hz
Qts	0.54
Qes	0.581
Qms	7.9
Vas	3.06 ft³

Re	3 Ω
Sd	76.7 in²
Xmax	0.44″
Vd	33.8 in³ calc.
Mms	97 g calc.
BL	10.1 T·m calc.
EBP	56 — sealed or ported calc.
Sensitivity, 1 W / 1 m	89 dB calc.

Mounting dimensions

Cutout diameter	10 15/16″
Mounting depth	5 9/16″

“≈” 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 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.

Bomber Bicho Papão 600W 4+4 Ohm (SW12BP-600-4+4) 1.84 ft³ sealed · 2.33 ft³ ported
Audison Voce AV 12 (1st gen, SVC 4 ohm) 1.87 ft³ sealed · 2.33 ft³ ported
Rockford Fosgate Prime R1S4-12 1.87 ft³ sealed · 1.59 ft³ ported
Orion NT 12 SVC 1.77 ft³ sealed · 2.30 ft³ ported
Magnat Bull Power Sub 300 1.73 ft³ sealed · 2.26 ft³ ported
Kicker ES 12" 4-Ohm SVC (ES124) 1.84 ft³ sealed · 2.37 ft³ ported

FAQ

What box does the Pioneer TS-W304F need?

Recommended net volume: 1.73 ft³ sealed, 2.26 ft³ ported tuned to 34 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-W304F Thiele/Small specs?

Fs 32.3 Hz, Qts 0.54, Vas 3.06 ft³, Xmax 0.44″, Sd 76.7 in².

What is the Pioneer TS-W304F mounting depth?

Mounting depth is 5 9/16″, cutout diameter 10 15/16″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the Pioneer TS-W304F handle and how do I wire it?

RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.