Infinity 1211W

12" · 4 Ω · 100 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	35.1 Hz
Qts	0.397
Qes	0.42
Qms	7.31
Vas	123.3 L
Sd	510 cm²
Xmax	4.5 mm
Re	3.17 Ω
Bl	10.1 T·m
Mms	60.7 g
Pe	100 W
Sensitivity	97 dB

Alignment hint

EBP	84 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 56.8 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
Infinity KAPPA CS 120 BR	35.2 +0.1	0.397 =	123.2 -0.1	8 +3.5	97.1 +0.1	close		+
Eminence DELTALITE II 2512 v2	37 +1.9	0.386 -0.01	147 +23.7	4.9 +0.4	96.3 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
MCM Electronics 55-2982	36.2 +1.1	0.407 +0.01	121.7 -1.6	7 +2.5	93.9 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Davis 31TPA vp nº1 dats v2	41.7 +6.6	0.4 =	114.9 -8.4	4.8 +0.3	95.5 -1.5	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 12BR70	35 -0.1	0.355 -0.04	135 +11.7	4.8 +0.3	94.7 -2.3	close	8 Ω vs 4 Ω: amp load changes	+
Ardan W PRO-31	36.8 +1.7	0.373 -0.02	133.9 +10.6	6 +1.5	94.6 -2.4	close	8 Ω vs 4 Ω: amp load changes	+
MCM Electronics 55-3212	38.5 +3.4	0.477 +0.08	122.6 -0.7	4.7 +0.2	96.6 -0.4	close		+
Visaton BZ300 4 Ohms	36 +0.9	0.483 +0.09	129 +5.7	5 +0.5	95.7 -1.3	close		+
Beyma 12BR70 vp n4	35.1 =	0.388 -0.01	95.7 -27.6	4.5 =	93.9 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 12LW30	45 +9.9	0.404 +0.01	110 -13.3	5 +0.5	97 =	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 1211W →

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.