Celestion BL15-150

15" · 8 Ω · 150 W · 98.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	49 Hz
Qts	0.593
Qes	0.66
Qms	5.8
Vas	179.8 L
Sd	851 cm²
Xmax	4.3 mm
Re	5.91 Ω
Bl	12.8 T·m
Mms	59.6 g
Pe	150 W
Sensitivity	98.4 dB

Alignment hint

EBP	74 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 426.2 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
Realistic PRO 250 vp	47.3 -1.7	0.619 +0.03	196.6 +16.8	5.5 +1.2	97.9 -0.5	close		+
Celestion BN15-300X	45.9 -3.1	0.603 +0.01	153.4 -26.4	4 -0.3	96.7 -1.7	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
18 Sound 15W500	50 +1	0.52 -0.07	189 +9.2	4 -0.3	100.5 +2.1	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
RCF L 15P854K	47 -2	0.518 -0.07	177 -2.8	10 +5.7	99 +0.6	close		+
SICA 15 BS 2.5 PL	44 -5	0.552 -0.04	160 -19.8	4 -0.3	97.5 -0.9	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
JBL MI-15	55 +6	0.616 +0.02	169.9 -9.9	3.4 -0.9	99.1 +0.7	close	Xmax 3.4 mm < 4.3 mm: lower excursion-limited SPL	+
Eminence DELTA 15 LF	41 -8	0.584 -0.01	186.1 +6.3	6 +1.7	96 -2.4	close		+
Celestion G15Z-200 CE	45 -4	0.497 -0.1	190.1 +10.3	4 -0.3	98.4 =	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
SB Audience BIANCO-15MW200	44 -5	0.586 -0.01	153 -26.8	5.2 +0.9	96 -2.4	close		+
Celestion BN15-400X	44.9 -4.1	0.59 =	146.5 -33.3	4 -0.3	96.4 -2	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the BL15-150 →

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.