Precision Devices PD158

15" · 8 Ω · 600 W · 98.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	39.85 Hz
Qts	0.205
Qes	0.215
Qms	6.935
Vas	161.94 L
Sd	881.41 cm²
Xmax	6.5 mm
Bl	27.35 T·m
Mms	107.905 g
Pe	600 W
Sensitivity	98.5 dB

Alignment hint

EBP	185 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 14.9 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
Precision Devices PD154	39 -0.85	0.205 =	149 -12.94	6.5 =	99 +0.5	close	16 Ω vs 8 Ω: amp load changes	+
Precision Devices PD153 ER	39 -0.85	0.222 +0.02	160 -1.94	6.5 =	99 +0.5	close	16 Ω vs 8 Ω: amp load changes · 400 W vs 600 W: lower power handling	+
B&C 15NW76	39 -0.85	0.21 +0.01	143 -18.94	8 +1.5	99 +0.5	close	4 Ω vs 8 Ω: amp load changes	+
B&C 15 PL 100	37 -2.85	0.204 =	152.9 -9.04	6 -0.5	99.4 +0.9	close	Xmax 6 mm < 6.5 mm: lower excursion-limited SPL	+
B&C 15FW76	40 +0.15	0.21 +0.01	138 -23.94	7 +0.5	100 +1.5	close		+
PHL Audio 6321MND	34 -5.85	0.207 =	150 -11.94	7.2 +0.7	98.1 -0.4	close		+
RCF LF 15N401	34 -5.85	0.221 +0.02	160 -1.94	7.1 +0.6	98.3 -0.2	close		+
Beyma 15"P80Nd	39 -0.85	0.21 +0.01	184 +22.06	7.5 +1	101 +2.5	close		+
PD PD 158	39.9 +0.05	0.241 +0.04	161.9 -0.04	5.9 -0.6	99.4 +0.9	close	Xmax 5.9 mm < 6.5 mm: lower excursion-limited SPL	+
Precision Devices PD 158	39.9 +0.05	0.241 +0.04	161.9 -0.04	5.9 -0.6	99.4 +0.9	close	Xmax 5.9 mm < 6.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the PD158 →

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.