Precision Devices PD.185N02

18" · 8 Ω · 1100 W · 96.8 dB

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	35.2 Hz
Qts	0.24
Qes	0.25
Qms	22.1
Vas	178.28 L
Sd	1182 cm²
Xmax	12 mm
Re	4.7 Ω
Bl	30.6 T·m
Mms	219.9 g
Pe	1100 W
Sensitivity	96.8 dB

Alignment hint

EBP	141 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 23.2 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 PD.1850/2	33.1 -2.1	0.24 =	203.84 +25.56	11.1 -0.9	96.7 -0.1	close	800 W vs 1100 W: lower power handling · Xmax 11.1 mm < 12 mm: lower excursion-limited SPL	+
Beyma 18QLEX1600Fe	31 -4.2	0.25 +0.01	177.2 -1.08	13 +1	96 -0.8	close	4 Ω vs 8 Ω: amp load changes	+
B&C 18DS100	32 -3.2	0.24 =	157 -21.28	14 +2	98 +1.2	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 18QLEX1600Fe	30 -5.2	0.23 -0.01	195 +16.72	13 +1	97 +0.2	close		+
Precision Devices PD.185C003-8	33 -2.2	0.24 =	224 +45.72	11 -1	97.3 +0.5	close	Xmax 11 mm < 12 mm: lower excursion-limited SPL	+
Oberton 18XB1301DS	35.7 +0.5	0.302 +0.06	172.9 -5.38	12 =	97.5 +0.7	close		+
Fane COLOSSUS 18-1500	33.5 -1.7	0.25 +0.01	175 -3.28	8.1 -3.9	97.8 +1	close	Xmax 8.1 mm < 12 mm: lower excursion-limited SPL	+
Oberton 18NXB1600	32.37 -2.83	0.303 +0.06	173.11 -5.17	13.5 +1.5	97 +0.2	close		+
18 Sound 18LW2600	30 -5.2	0.28 +0.04	186 +7.72	14 +2	96.5 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 18LW2600	31 -4.2	0.29 +0.05	187 +8.72	14.8 +2.8	96.8 =	usable		+

Compare the closest 3 against the PD.185N02 →

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.