B&C 15 PH 40

15" · 8 Ω · 400 W · 99.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38 Hz
Qts	0.334
Qes	0.35
Qms	7.5
Vas	244 L
Sd	855 cm²
Xmax	3.5 mm
Re	5.3 Ω
Bl	16.3 T·m
Mms	73.7 g
Pe	400 W
Sensitivity	99.6 dB

Alignment hint

EBP	109 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 70.1 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
Hyper Phase CM15S	38 =	0.349 +0.01	245 +1	4.5 +1	99.1 -0.5	close	150 W vs 400 W: lower power handling	+
Fostex L 467	40 +2	0.339 +0.01	243.5 -0.5	4.4 +0.9	99.2 -0.4	close	150 W vs 400 W: lower power handling	+
Fostex L 467 B	40 +2	0.339 +0.01	245 +1	4.4 +0.9	99.2 -0.4	close	150 W vs 400 W: lower power handling	+
Fane 15-500	35 -3	0.335 =	220 -24	3.5 =	98.2 -1.4	close		+
Fane SOVEREIGN 15-500	35 -3	0.335 =	220 -24	3.5 =	98.2 -1.4	close		+
Audio Valves 380 MSP A	36 -2	0.354 +0.02	242.2 -1.8	4 +0.5	97.7 -1.9	close	200 W vs 400 W: lower power handling	+
Faital PRO 15PR400 v2021	35 -3	0.322 -0.01	248.9 +4.9	5.8 +2.3	98.9 -0.7	close		+
Eminence VORTEX 15	39.3 +1.3	0.321 -0.01	219.7 -24.3	5.5 +2	100 +0.4	close	250 W vs 400 W: lower power handling	+
Faital PRO 15PR400	35 -3	0.32 -0.01	248.9 +4.9	5.75 +2.25	99 -0.6	close		+
Visaton BGS 40 v1	38 =	0.306 -0.03	263 +19	4.6 +1.1	98.5 -1.1	close	200 W vs 400 W: lower power handling	+

Compare the closest 3 against the 15 PH 40 →

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.