Precision Devices PD 156

15" · 8 Ω · 650 W · 99.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	50.2 Hz
Qts	0.378
Qes	0.4
Qms	6.94
Vas	120.2 L
Sd	800 cm²
Xmax	6.6 mm
Re	5.74 Ω
Bl	18.4 T·m
Mms	75.2 g
Pe	650 W
Sensitivity	99.2 dB

Alignment hint

EBP	126 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 48.1 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
PD PD 156	50.2 =	0.378 =	120.2 =	6.6 =	99.2 =	close		+
Precision Devices PD156	50.15 -0.05	0.38 =	120.17 -0.03	9.5 +2.9	97 -2.2	close	16 Ω vs 8 Ω: amp load changes	+
Eminence KAPPA PRO 15 LF v1	46 -4.2	0.372 -0.01	127.5 +7.3	6.4 -0.2	98.6 -0.6	close	Xmax 6.4 mm < 6.6 mm: lower excursion-limited SPL	+
18 Sound 15W1301	48 -2.2	0.355 -0.02	123 +2.8	6 -0.6	99.3 +0.1	close	Xmax 6 mm < 6.6 mm: lower excursion-limited SPL	+
LaVoce WXF15.400	50 -0.2	0.38 =	118 -2.2	4.9 -1.7	99.3 +0.1	close	400 W vs 650 W: lower power handling · Xmax 4.9 mm < 6.6 mm: lower excursion-limited SPL	+
LaVoce WXF15.350-8	50 -0.2	0.38 =	118 -2.2	4.6 -2	99.3 +0.1	close	350 W vs 650 W: lower power handling · Xmax 4.6 mm < 6.6 mm: lower excursion-limited SPL	+
Eminence KAPPA PRO 15 LF	46 -4.2	0.373 -0.01	142.2 +22	6.7 +0.1	98.9 -0.3	close		+
Oberton 15MB35	47.7 -2.5	0.336 -0.04	115.1 -5.1	6.75 +0.15	100 +0.8	close		+
B&C 15 NDL 88	45 -5.2	0.34 -0.04	126 +5.8	6.6 =	99.1 -0.1	close		+
JBL 2226HPL vp prodance	49 -1.2	0.396 +0.02	140.1 +19.9	5.8 -0.8	99.2 =	close	Xmax 5.8 mm < 6.6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the PD 156 →

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.