Celestion BN12-300S4

12" · 4 Ω · 300 W · 101.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	61.2 Hz
Qts	0.408
Qes	0.46
Qms	3.64
Vas	56.9 L
Sd	518 cm²
Xmax	2.5 mm
Re	2.72 Ω
Bl	10.1 T·m
Mms	44.7 g
Pe	300 W
Sensitivity	101.2 dB

Alignment hint

EBP	133 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 28.4 L

EBP > 100: favours a ported (bass-reflex) 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
Peerless FSL-1225R02-08	59 -2.2	0.407 =	59.4 +2.5	2.5 =	98 -3.2	close	8 Ω vs 4 Ω: amp load changes	+
RCF L 12/854K	67 +5.8	0.382 -0.03	58 +1.1	3 +0.5	100.1 -1.1	close	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Radian 5212B	62 +0.8	0.42 +0.01	58.4 +1.5	5.4 +2.9	98.2 -3	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound PWX12	61.3 +0.1	0.341 -0.07	56.2 -0.7	2.9 +0.4	98.6 -2.6	close	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Celestion TF 1225E	60.7 -0.5	0.414 +0.01	50.8 -6.1	3.5 +1	96.8 -4.4	close	8 Ω vs 4 Ω: amp load changes	+
Celestion TN1225	60.5 -0.7	0.33 -0.08	53.9 -3	2.5 =	99 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Fertin Acoustics LB 31 SONO	59.5 -1.7	0.407 =	70 +13.1	4 +1.5	97.5 -3.7	usable	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Beyma SM112 vp	57.8 -3.4	0.391 -0.02	64.6 +7.7	4.2 +1.7	97.7 -3.5	usable	8 Ω vs 4 Ω: amp load changes	+
RCF L 12/568H	58 -3.2	0.409 =	72 +15.1	4 +1.5	98.1 -3.1	usable	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Celestion TRUVOX 1225	63 +1.8	0.5 +0.09	54.5 -2.4	2.5 =	97.9 -3.3	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the BN12-300S4 →

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.