Pioneer TS-W1201C

12" · 4 Ω · 500 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	20 Hz
Qts	0.291
Qes	0.3
Qms	9.48
Vas	118 L
Sd	495 cm²
Xmax	9.2 mm
Re	3 Ω
Bl	15.2 T·m
Mms	184.3 g
Pe	500 W
Sensitivity	91.2 dB

Alignment hint

EBP	67 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 24.1 L

EBP 50-100: works in either a sealed or ported 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
Helix P12	21.4 +1.4	0.302 +0.01	118.6 +0.6	9.9 +0.7	91.4 +0.2	close	350 W vs 500 W: lower power handling	+
Pioneer TS-W 304 C	21 +1	0.307 +0.02	136 +18	11 +1.8	92.2 +1	close	300 W vs 500 W: lower power handling	+
Helix W-12 COMPETITION	21.4 +1.4	0.3 +0.01	118.6 +0.6	11 +1.8	87.3 -3.9	close	350 W vs 500 W: lower power handling	+
GR Research SW-12-04	21 +1	0.279 -0.01	137 +19	8.3 -0.9	92.5 +1.3	close	200 W vs 500 W: lower power handling · Xmax 8.3 mm < 9.2 mm: lower excursion-limited SPL	+
Peerless XLS-P830500	20 =	0.246 -0.04	103.9 -14.1	8.6 -0.6	90.5 -0.7	close	300 W vs 500 W: lower power handling · Xmax 8.6 mm < 9.2 mm: lower excursion-limited SPL	+
Pioneer TS-W304C	22.3 +2.3	0.274 -0.02	134 +16	9.8 +0.6	93.5 +2.3	close	300 W vs 500 W: lower power handling	+
Ground Zero GZHW 30X	22.6 +2.6	0.32 +0.03	101 -17	12.3 +3.1	90.6 -0.6	usable		+
Eminence LAB 12 C	22.9 +2.9	0.33 +0.04	128.3 +10.3	11 +1.8	92.6 +1.4	usable		+
Oxygen ALIUM 300	22 +2	0.29 =	105 -13	6 -3.2	91.2 =	usable	180 W vs 500 W: lower power handling · Xmax 6 mm < 9.2 mm: lower excursion-limited SPL	+
Pioneer TSW 304 C	21 +1	0.342 +0.05	146 +28	11 +1.8	92 +0.8	usable	300 W vs 500 W: lower power handling	+

Compare the closest 3 against the TS-W1201C →

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.