Dayton Audio QU4TRO 12"

12" · 4 Ω · 250 W · 93.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	27 Hz
Qts	0.357
Qes	0.37
Qms	10.5
Vas	120.1 L
Sd	506 cm²
Xmax	8.7 mm
Re	3.5 Ω
Bl	12.9 T·m
Mms	103.9 g
Pe	250 W
Sensitivity	93.6 dB

Alignment hint

EBP	73 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 41.1 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
Oxygen IN12 300	27 =	0.362 +0.01	114.8 -5.3	8.7 =	93.2 -0.4	close		+
Dali A-12WD vp	27 =	0.328 -0.03	121 +0.9	8.8 +0.1	93.3 -0.3	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio ST305-8	29.6 +2.6	0.348 -0.01	128.1 +8	8 -0.7	92.9 -0.7	close	8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 8.7 mm: lower excursion-limited SPL	+
Faital PRO 12RS430	30 +3	0.35 -0.01	131.2 +11.1	13.57 +4.87	93 -0.6	close	8 Ω vs 4 Ω: amp load changes	+
Visaton TIW300 vp	28.9 +1.9	0.32 -0.04	125 +4.9	8.3 -0.4	92.5 -1.1	close	8 Ω vs 4 Ω: amp load changes · Xmax 8.3 mm < 8.7 mm: lower excursion-limited SPL	+
Helix HXS 1206	25 -2	0.337 -0.02	107 -13.1	7 -1.7	93.6 =	close	Xmax 7 mm < 8.7 mm: lower excursion-limited SPL	+
Hertz Audio ES 300	28 +1	0.38 +0.02	89.4 -30.7	9 +0.3	94 +0.4	close		+
Dayton Audio SD315-88	26.9 -0.1	0.342 -0.01	122.8 +2.7	5.5 -3.2	94.2 +0.6	close	120 W vs 250 W: lower power handling · Xmax 5.5 mm < 8.7 mm: lower excursion-limited SPL	+
Dayton Audio 12 DVC	25 -2	0.347 -0.01	147.3 +27.2	15.5 +6.8	94 +0.4	close		+
Atohm D300P04	26.5 -0.5	0.33 -0.03	104 -16.1	7 -1.7	93 -0.6	close	Xmax 7 mm < 8.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the QU4TRO 12" →

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.