SB Acoustics SB34SWPL76-4 v2019

12" · 4 Ω · 300 W · 87.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	19 Hz
Qts	0.327
Qes	0.34
Qms	8.6
Vas	78.5 L
Sd	458 cm²
Xmax	9.7 mm
Re	3.5 Ω
Bl	18 T·m
Mms	262.8 g
Pe	300 W
Sensitivity	87.6 dB

Alignment hint

EBP	56 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 21.4 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 AIR2 300 vp	22 +3	0.34 +0.01	82 +3.5	9.6 -0.1	89.4 +1.8	close	Xmax 9.6 mm < 9.7 mm: lower excursion-limited SPL	+
SB Acoustics SB34SWPL76-4	18 -1	0.319 -0.01	89.5 +11	7.5 -2.2	87.6 =	close	Xmax 7.5 mm < 9.7 mm: lower excursion-limited SPL	+
Oxygen AIR2 300 v2015	22.7 +3.7	0.388 +0.06	78 -0.5	9.9 +0.2	89.1 +1.5	usable		+
CSS Audio SDX12 DVC	21.3 +2.3	0.375 +0.05	67.5 -11	13.4 +3.7	87.3 -0.3	usable		+
RE Audio XXX12-V2-4	21 +2	0.404 +0.08	73.9 -4.6	13.5 +3.8	86.5 -1.1	usable	8 Ω vs 4 Ω: amp load changes	+
Ground Zero GZHW 30X	22.6 +3.6	0.32 -0.01	101 +22.5	12.3 +2.6	90.6 +3	usable		+
Kenwood XR-W1204	21.5 +2.5	0.341 +0.01	125.386 +46.89	10.8 +1.1	87.3 -0.3	usable		+
Eclipse 8712.8	20 +1	0.39 +0.06	84.95 +6.45	18.5 +8.8	84.1 -3.5	usable	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Helix W-12 COMPETITION	21.4 +2.4	0.3 -0.03	118.6 +40.1	11 +1.3	87.3 -0.3	usable		+
Infinity REFERENCE 1260W	23.5 +4.5	0.39 +0.06	83 +4.5	13 +3.3	86 -1.6	usable		+

Compare the closest 3 against the SB34SWPL76-4 v2019 →

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.