Helix W-12 COMPETITION

12" · 4 Ω · 350 W · 87.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	21.4 Hz
Qts	0.3
Qes	0.33
Qms	3.6
Vas	118.6 L
Sd	519 cm²
Xmax	11 mm
Re	3.2 Ω
Bl	15.1 T·m
Mms	174.9 g
Pe	350 W
Sensitivity	87.3 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 26 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
Kenwood XR-W1204	21.5 +0.1	0.341 +0.04	125.386 +6.79	10.8 -0.2	87.3 =	close	Xmax 10.8 mm < 11 mm: lower excursion-limited SPL	+
Helix P12	21.4 =	0.302 =	118.6 =	9.9 -1.1	91.4 +4.1	close	Xmax 9.9 mm < 11 mm: lower excursion-limited SPL	+
Visaton TIW 360X	21 -0.4	0.34 +0.04	140 +21.4	12.5 +1.5	87.3 =	close	8 Ω vs 4 Ω: amp load changes	+
Eminence LAB 12C	23 +1.6	0.33 +0.03	128.31 +9.71	13 +2	88.9 +1.6	close		+
Visaton TIW360X	21 -0.4	0.336 +0.04	140 +21.4	12.2 +1.2	88.8 +1.5	close	8 Ω vs 4 Ω: amp load changes	+
Pioneer TS-W 304 C	21 -0.4	0.307 +0.01	136 +17.4	11 =	92.2 +4.9	close		+
Pioneer TS-W1201C	20 -1.4	0.291 -0.01	118 -0.6	9.2 -1.8	91.2 +3.9	close	Xmax 9.2 mm < 11 mm: lower excursion-limited SPL	+
Ground Zero GZHW 30X	22.6 +1.2	0.32 +0.02	101 -17.6	12.3 +1.3	90.6 +3.3	usable		+
Eminence LAB 12 \|	22 +0.6	0.38 +0.08	125.2 +6.6	13 +2	89.2 +1.9	usable	6 Ω vs 4 Ω: amp load changes	+
Eminence LAB 12	22 +0.6	0.379 +0.08	125.2 +6.6	11 =	90 +2.7	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the W-12 COMPETITION →

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.