Precision Devices PD 12SB30

12" · 8 Ω · 400 W · 97.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	50.2 Hz
Qts	0.297
Qes	0.316
Qms	5.024
Vas	59 L
Sd	530.9 cm²
Xmax	4.8 mm
Re	5.49 Ω
Bl	19.2 T·m
Mms	67.3 g
Pe	400 W
Sensitivity	97.4 dB

Alignment hint

EBP	159 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 12.6 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
B&C 12FL76	50 -0.2	0.3 =	57 -2	6 +1.2	97.5 +0.1	close		+
McCauley 6234	50 -0.2	0.297 =	60 +1	4.2 -0.6	97.8 +0.4	close	300 W vs 400 W: lower power handling · Xmax 4.2 mm < 4.8 mm: lower excursion-limited SPL	+
LaVoce WSN122.50-4	49 -1.2	0.29 -0.01	64.43 +5.43	5.3 +0.5	97 -0.4	close	4 Ω vs 8 Ω: amp load changes · 250 W vs 400 W: lower power handling	+
BMS 12C382	52 +1.8	0.285 -0.01	57 -2	4.5 -0.3	97.6 +0.2	close	Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL	+
B&C 12CL64	52 +1.8	0.3 =	64 +5	4.5 -0.3	98 +0.6	close	250 W vs 400 W: lower power handling · Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL	+
DAS Audio 12H	48 -2.2	0.302 +0.01	57 -2	5.9 +1.1	96.1 -1.3	close		+
Master Audio HPLSN12-500	52 +1.8	0.283 -0.01	65 +6	5 +0.2	97.7 +0.3	close		+
Fane CRESCENDO 12MB	50 -0.2	0.295 =	67 +8	4.3 -0.5	97.8 +0.4	close	300 W vs 400 W: lower power handling · Xmax 4.3 mm < 4.8 mm: lower excursion-limited SPL	+
JBL 2206H	52 +1.8	0.316 +0.02	62.3 +3.3	5.9 +1.1	97.9 +0.5	close		+
B&C 12FW64	55 +4.8	0.29 -0.01	64 +5	5 +0.2	98 +0.6	close	250 W vs 400 W: lower power handling	+

Compare the closest 3 against the PD 12SB30 →

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.