Precision Devices PD123 ER

12" · 16 Ω · 400 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	16 Ω
Fs	60.5 Hz
Qts	0.247
Qes	0.257
Qms	6.62
Vas	51 L
Sd	530 cm²
Xmax	6.5 mm
Re	5.6 Ω
Bl	21.49 T·m
Mms	54 g
Pe	400 W
Sensitivity	97 dB

Alignment hint

EBP	235 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 7.1 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
Sica 12 K 4 PL	48.5 -12	0.25 =	47.4 -3.6	7 +0.5	97.1 +0.1	close	8 Ω vs 16 Ω: amp load changes	+
18 Sound 12W750	55 -5.5	0.27 +0.02	58 +7	7 +0.5	97 =	close	4 Ω vs 16 Ω: amp load changes	+
Oberton 12MB35	51.43 -9.07	0.267 +0.02	50.07 -0.93	6.75 +0.25	98 +1	close	8 Ω vs 16 Ω: amp load changes	+
18 Sound 12ND830	58 -2.5	0.24 -0.01	63 +12	6.5 =	99 +2	close	4 Ω vs 16 Ω: amp load changes	+
B&C 12NDL88	51 -9.5	0.27 +0.02	52 +1	8 +1.5	98 +1	close	8 Ω vs 16 Ω: amp load changes	+
B&C 12NDL88	48 -12.5	0.24 -0.01	57 +6	8 +1.5	97 =	close	4 Ω vs 16 Ω: amp load changes	+
Beyma 12MC700Nd	51 -9.5	0.24 -0.01	58 +7	7 +0.5	99 +2	close	8 Ω vs 16 Ω: amp load changes	+
Beyma 12 P1000/Nd	47 -13.5	0.26 +0.01	49 -2	8 +1.5	96 -1	usable	8 Ω vs 16 Ω: amp load changes	+
B&C 12 NDL 88	51 -9.5	0.274 +0.03	52 +1	5.7 -0.8	97.8 +0.8	usable	8 Ω vs 16 Ω: amp load changes · Xmax 5.7 mm < 6.5 mm: lower excursion-limited SPL	+
B&C 12CLA76	52 -8.5	0.25 =	56 +5	5.3 -1.2	98.5 +1.5	usable	8 Ω vs 16 Ω: amp load changes · Xmax 5.3 mm < 6.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the PD123 ER →

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.