Precision Devices PD.123C01

12" · 8 Ω · 400 W · 94.9 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	46 Hz
Qts	0.32
Qes	0.32
Qms	16.2
Vas	66.82 L
Sd	526 cm²
Xmax	7 mm
Re	5.9 Ω
Bl	19.2 T·m
Mms	68.6 g
Pe	400 W
Sensitivity	94.9 dB

Alignment hint

EBP	144 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 17.2 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.12SB30	47 +1	0.31 -0.01	66.82 =	7 =	95.2 +0.3	close		+
Precision Devices PD 123C01	46 =	0.314 -0.01	66.8 -0.02	5.6 -1.4	96.4 +1.5	close	Xmax 5.6 mm < 7 mm: lower excursion-limited SPL	+
Eminence IMPERO 12 A	42.8 -3.2	0.322 =	70.2 +3.38	6.2 -0.8	95.8 +0.9	close	Xmax 6.2 mm < 7 mm: lower excursion-limited SPL	+
Beyma 12LX60	42 -4	0.3 -0.02	66 -0.82	9 +2	93.8 -1.1	close		+
18 Sound 12NTLS3500	41 -5	0.34 +0.02	63 -3.82	7.9 +0.9	94.5 -0.4	close	4 Ω vs 8 Ω: amp load changes	+
LaVoce NBASS12-30-16	48 +2	0.34 +0.02	69.83 +3.01	7.3 +0.3	97.5 +2.6	close	16 Ω vs 8 Ω: amp load changes	+
Eminence DEFINIMAX 4012 HO	46 =	0.356 +0.04	59.4 -7.42	6.2 -0.8	95.2 +0.3	close	Xmax 6.2 mm < 7 mm: lower excursion-limited SPL	+
Eminence LA12850	46 =	0.312 -0.01	66.1 -0.72	5 -2	96.4 +1.5	close	Xmax 5 mm < 7 mm: lower excursion-limited SPL	+
Faital PRO 12FH500 16 Ohms	48 +2	0.367 +0.05	66.6 -0.22	7.3 +0.3	92.8 -2.1	close	16 Ω vs 8 Ω: amp load changes	+
Sica 12 S 3 PL	42 -4	0.34 +0.02	76.9 +10.08	7 =	95.8 +0.9	close		+

Compare the closest 3 against the PD.123C01 →

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.