Precision Devices PD 15BR40

15" · 8 Ω · 700 W · 98.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38.7 Hz
Qts	0.34
Qes	0.36
Qms	6.13
Vas	158.3 L
Sd	855.3 cm²
Xmax	7.9 mm
Re	4.97 Ω
Bl	19.2 T·m
Mms	109.5 g
Pe	700 W
Sensitivity	98.1 dB

Alignment hint

EBP	108 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 47.6 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
PD PD 15BR40	38.7 =	0.34 =	158.3 =	7.9 =	98.1 =	close		+
Faital PRO 15FH520	38 -0.7	0.34 =	153.2 -5.1	9.15 +1.25	97 -1.1	close	4 Ω vs 8 Ω: amp load changes	+
P.Audio S15-100LF	38 -0.7	0.35 +0.01	169.1 +10.8	7.8 -0.1	98 -0.1	close	Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+
BMS 15S330	39 +0.3	0.32 -0.02	152 -6.3	8 +0.1	98 -0.1	close		+
Faital PRO 15FH520-4	38 -0.7	0.337 =	156.6 -1.7	7.8 -0.1	100.6 +2.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+
Elokance 15WF2400	38 -0.7	0.32 -0.02	165.2 +6.9	10.5 +2.6	98.1 =	close		+
Oberton 15CX	38.2 -0.5	0.349 +0.01	163.8 +5.5	6.8 -1.1	97.8 -0.3	close	450 W vs 700 W: lower power handling · Xmax 6.8 mm < 7.9 mm: lower excursion-limited SPL	+
Beyma 15MC700	41 +2.3	0.352 +0.01	153 -5.3	7.4 -0.5	97.7 -0.4	close	Xmax 7.4 mm < 7.9 mm: lower excursion-limited SPL	+
Oberton 15MB500	41.5 +2.8	0.339 =	161.54 +3.24	7.75 -0.15	100 +1.9	close	500 W vs 700 W: lower power handling · Xmax 7.75 mm < 7.9 mm: lower excursion-limited SPL	+
JBL 2265 HPL	37 -1.7	0.325 -0.02	176 +17.7	8 +0.1	97.9 -0.2	close		+

Compare the closest 3 against the PD 15BR40 →

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.