Pioneer TS-W304R

12" · 4 Ω · 300 W · 90.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	28.6 Hz
Qts	0.701
Qes	0.74
Qms	13.3
Vas	77.9 L
Sd	520 cm²
Xmax	4.7 mm
Re	3 Ω
Bl	10.5 T·m
Mms	150.7 g
Pe	300 W
Sensitivity	90.2 dB

Alignment hint

EBP	39 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 4451.7 L

EBP < 50: favours a sealed (closed) alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
MTX Audio TH6000 6124	29.7 +1.1	0.66 -0.04	78.4 +0.5	7.4 +2.7	90.3 +0.1	close		+
Pioneer TS-300S4	27 -1.6	0.7 =	77.88 -0.02	5 +0.3	93 +2.8	close		+
MTX Audio RT12-44	28 -0.6	0.698 =	68 -9.9	7.6 +2.9	91.8 +1.6	close	2 Ω vs 4 Ω: amp load changes	+
JL Audio 12W0V3-4	28.4 -0.2	0.67 -0.03	71.6 -6.3	9.3 +4.6	88.3 -1.9	close	8 Ω vs 4 Ω: amp load changes	+
MTX Audio RTL12-44 DVC	30.4 +1.8	0.761 +0.06	74 -3.9	7.1 +2.4	91.7 +1.5	close		+
Peerless XXLS-P830845 v2025	29 +0.4	0.654 -0.05	91.9 +14	7.6 +2.9	88.5 -1.7	close	8 Ω vs 4 Ω: amp load changes · 175 W vs 300 W: lower power handling	+
Pioneer TS-W300R	29.5 +0.9	0.646 -0.05	93.2 +15.3	6.8 +2.1	91.6 +1.4	close	150 W vs 300 W: lower power handling	+
JBL CS1214	28 -0.6	0.536 -0.16	76.7 -1.2	6.1 +1.4	90.2 =	close		+
Monacor CRB-12TC vp série	31 +2.4	0.611 -0.09	75 -2.9	4.9 +0.2	87.3 -2.9	usable	8 Ω vs 4 Ω: amp load changes · 100 W vs 300 W: lower power handling	+
Oxygen SPIRAL 12.1	27 -1.6	0.749 +0.05	94 +16.1	7 +2.3	88.7 -1.5	usable	150 W vs 300 W: lower power handling	+

Compare the closest 3 against the TS-W304R →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.