Celestion TF 1215

12" · 8 Ω · 250 W · 96.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	62 Hz
Qts	0.857
Qes	1
Qms	6
Vas	69 L
Sd	517 cm²
Xmax	2.5 mm
Re	5 Ω
Bl	8.3 T·m
Mms	35.8 g
Pe	250 W
Sensitivity	96.2 dB

Alignment hint

EBP	62 · flexible
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
SICA 12 D 1.5 CS 8 Ohms	62 =	0.748 -0.11	63.5 -5.5	2.7 +0.2	96.8 +0.6	close	100 W vs 250 W: lower power handling	+
Sica 12 D 1.5 CS	62 =	0.75 -0.11	63.5 -5.5	2.7 +0.2	96.9 +0.7	close	130 W vs 250 W: lower power handling	+
Mercuriale PTR 306 M0	58 -4	0.808 -0.05	70.1 +1.1	3.9 +1.4	94.6 -1.6	close	150 W vs 250 W: lower power handling	+
Monacor SP-300GI	65 +3	0.969 +0.11	75 +6	3.2 +0.7	94.9 -1.3	close	150 W vs 250 W: lower power handling	+
Peavey S-12825	59.4 -2.6	0.611 -0.25	66.6 -2.4	2.5 =	96.8 +0.6	usable		+
Fane 12-100TC	56 -6	0.779 -0.08	56.1 -12.9	2.5 =	93.5 -2.7	usable	100 W vs 250 W: lower power handling	+
Siemens KL405	75.8 +13.8	0.77 -0.09	68 -1	3 +0.5	99.2 +3	usable		+
Fonestar FPW 350	52 -10	0.876 +0.02	65 -4	3.7 +1.2	91.8 -4.4	usable	175 W vs 250 W: lower power handling	+
Fostex PS 300	58 -4	0.857 =	102.2 +33.2	1.9 -0.6	95.8 -0.4	usable	75 W vs 250 W: lower power handling · Xmax 1.9 mm < 2.5 mm: lower excursion-limited SPL	+
Celestion F12M-150 Triple Cone	69.4 +7.4	0.906 +0.05	46.9 -22.1	2.3 -0.2	95.2 -1	usable	150 W vs 250 W: lower power handling · Xmax 2.3 mm < 2.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the TF 1215 →

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.